名词性从句讲解
名词性从句
在句子中起名词作用的从句叫名词从句(Noun Clauses）。名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
一、引导名词性从句的连接词
引导名词性从句的连接词可分为三类：
第一类：连词：that（无任何词意），whether, if（均表示―是否‖表明从句内容的不确定性），它们在从句中均不充当任何成分。
第二类：连接代词：what, whatever, who, whoever, whom, whose, which，whichever，whomever它们常在从句中做主语、表语、宾语或定语。
第三类：连接副词：when, where, how, why它们常在从句中做状语。
二. 主语从句
在句子中做主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。主语从句后的谓语动词一般用单数形式。例如：
1. What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
2. Who will win the match is still unknown. 谁能赢得这场比赛还不得而知。
3. How he became a writer is known to us. 我们都知道他是如何成为一名作家的。
4. Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。
5. Whoever leaves last must shut the window and lock the door.
6. That he was late for class again made the teacher very angry.
7. Whether we will have an exam hasn’t been decided.
**有时为避免句子头重脚轻，常用it作形式主语放于句首代替主语从句，而把主语从句置于句末。常用句型如下：
（1）It + be + 名词+ that从句例如：
It’s a pity that you can’t go to the cinema with me.
It’s no wonder that he has passed the exam.
（2）It + be + 形容词+ that从句
It is necessary that we should take some measures to protect the environment.
（3）It + be + 动词的过去分词+ that从句
It is reported that the star Liu Ye got married with a French girl the other day.
常用于此句型的过去分词有：said, believed, hoped, supposed, suggested等。
（4）It + 不及物动词+ that 从句
It happened that I was out when you called me.
It suddenly occurred to/ stuck me that I hadn’t locked the door.
**另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气―(should) +do‖，常用的句型有：
It is necessary (important, natural, strange, wonderful、good、proper、right、wrong、well、fortunate、important、necessary、useless、likely、probable、impossible etc.) that + 主语+ should + do ……
It is a pity (a shame, no wonder, etc.) that…
It is suggested (requested, proposed, desired, etc.) that + 主语+ should + do ……例如：
It is requested that every boy should serve the army for two years.
在以上句型中should常可省略
三、宾语从句
在句子中作宾语的从句叫宾语从句。宾语从句在句中可以作谓语动词或介词及非谓语动词的宾语。引导宾语从句的关联词与引导主语从句和表语从句的关联词大致一样，
1. 由连接词that引导的宾语从句
由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如：
We must never think (that) we are good in everything while others are good in nothing.
He has told me (that) he will go to Shanghai tomorrow and that he will stay there for a few weeks.
**注意：在demand、order、suggest、decide、insist, desire, request, command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用―（should）+ 动词原形‖。例如：
I insist that she (should) do her work alone. 我坚持要她自己工作。
The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。
2. 用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意从句语序要用陈述语序。例如：
I want to know what he has told you. 我想知道他告诉了你什么。
She always thinks of how she can work well. 她总是在想怎样能把工作做好。
She will give whoever needs help a warm support.
3. 注意宾语从句中的时态呼应，
当主句动词是现在时时，从句根据自身的句子情况，而使用不同时态。例如：
I know (that) he studies English every day. （从句用一般现在时）
I know (that) he studied English last term. （从句用一般过去时）
I know (that) he will study English next year. （从句用一般将来时）
I know (that) he has studied English since 1998. （从句用现在完成时）
当主句动词是过去时态（could, would除外）时，从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；但当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。例如：The teacher told us that Tom had left us for America．
He said that he would go to Hong Kong the next week.
4. think, believe, imagine, suppose等动词引起的否定性宾语从句中，要把主句中的动词变为否定式。即将从句中的否定形式转移到主句中。例如：
We don’t think you are here. 我们认为你不在这。
I don’t believe he will do so. 我相信他不会这样做。
四、表语从句
在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，另外as if/though和because也可引导表语从句。表语从句位于连系动词后。其基本结构为：主语+ 系动词+ 从句。例如：
The fact is that we have lost the game. 事实是我们已经输了这场比赛。
That’s just what I want. 这正是我想要的。
This is where our problem lies. 这就是我们的问题所在。
That is why he didn’t come to the meeting. 那就是他为什么不到会的原因。
It looks as if it is going to rain. 看上去天要下雨了。
He didn’t come to school yesterday. That’s because he was ill.
**需要注意的是：
1. 当主语是reason时，表语从句要用that引导而不是because。例如：
The reason why he was late was that he missed the train by one minute this morning .
【注意】whether 可引导表语从句，但与之同义的if却通常不用于引导表语从句。例如：The problem is whether we can get enough money to finish the project.
2. 若句子的主语是suggestion, advice, desire, order, request, demand, 等表示要求、命令、建议等意义的词，则表语从句常用―（should）+ 动词原形‖。例如：
My suggestion is that we (should) set off at once.
五、同位语从句
同位语从句对其前面的名词进行解释，使其内容具体化。同位语从句通常由that或wh-词引导，可接同位语从句的名词有advice、demand、doubt、dream、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word等。例如：
The news that we won the game is exciting.我们赢得这场比赛的消息令人激动。
I have no idea when he will come back home. 我不知道他什么时候回来。
The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了。
Nobody answered the question who broke the window. 没人回答谁打破了窗户这个问题。
若同位语从句前面的名词是advice、demand、request、suggestion、order等时，同位语从句常用―（should）+ 动词原形‖。例如：
You’d better take his suggestion that Tom should not be fit for the job.
**同位语从句和定语从句的区别：
That或which，who和whose作为关系代词引导定语从句时，指代定语从句的先行词，在从句中充当句子成分，在从句中作宾语时可以省略；that引导同位语从句时，起连词的作用，没有实际意义，在从句不充当句子成分，一般不能省略。Who和which引导同位语从句时，起连词的作用，在从句中充当成分。意思分别为“谁”、“哪一个”和“谁的”
试比较下面两组例句:
I had no idea that you were here．（that引导同位语从句，不能省略）
Have you got the idea（that）this book gives you of life in ancient Greece？（that引导定语从句，作宾语，可以省略）
Nobody answered the question who broke the window.
Nobody saw the boy who broke the window.
六．名词性从句需注意的地方
1. whether与if 在作―是否‖的意思讲时在下列情况下一般只能用whether，不用if：
a. 引导主语从句并放在句首时；
b. 引导表语从句时；
c . 引导的从句作介词宾语时；
d. 引导词后有―or not‖时；
e. 后接动词不定式时；
f. 用if会引起歧义时。例如：
○1. Whether there is life on the moon is an interesting question. 月球上有没有生命是个有趣的问题。
○2. The question is whether she should have a low opinion of the test?
○3. Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。
○4. I wonder whether or not he will come. 我想知道他来还是不来。
○5. Can you tell me whether to go or to stay? 你能否告诉我是去还是留？
○6. Could you tell me if you know the answer? 这句话有两种意思：―你能告诉我是否知道答案吗？‖或―如果你知道答案，请告诉我，好吗？‖。如用whether可避免歧义.
2. what与which 在名词性从句中如果有供选择的范围用which引导，若没有则用what. 例如：
I don’t know what present I should give Mary for her birthday.
There are so many books in the shelf that I don’t know which I should read first.
3. who与whoever，who在名词性从句中是“谁”的意思，从句内容侧重谁做什么，而whoever意为“无论谁”，从句内容强调无论谁做那件事，侧重事，常可改成anyone who, 而who则不能。例如：
Please tell me who broke the window.
I will give whoever helps me a thousand dollars as a reward.
七、高考热点透视
1. ___ is a fact that English is being accepted as an international language. (NMET 1995)
A. There
B. This
C. That
D. It
答案D。当名词从句在句中作主语时，为避免句子头重脚轻，常用it作形式主语置于句首，而将真正的主语从句放在句尾。此时it只起先行引导作用，本身无实义。此句也可以改写为：That English is being accepted as an international language is a fact.
2．A computer can only do ____ you have instructed it to do．（NMET2001）
A．how B．after C．what D．when
答案C。从句子结构可知，句子的空白处应该填引导宾语从句的连词，做主句谓语动词do的宾语，同时该连接词还是从句中的do的宾语，因此，此处的连接词应该用what。
3. He asked ____ for a violin．（MET1992）
A. did I pay how much
B. I paid how much
C. how much did I pay
D. how much I paid
答案：D。宾语从句相当于特殊疑问句，句子语序要用陈述语序。
4. What the doctors really doubt is ____ my mother will recover from the serious disease soon．（上海2001年春季招生）
A. when
B. how
C. whether
D. why
答案C。这是一个表语从句。根据doubt一词可知，所怀疑的应是是否能治好病，所以要填whether。这句话的意思是―医生真的怀疑我妈妈是否能很快从重病中恢复过来。‖
5．It is generally considered unwise to give a child _____he or she wants. (NMET1997)
A. however
B. whatever
C. whichever
D. whenever
答案B。根据句意―一般认为孩子要什么就给什么是不好的。‖可以看出后面的从句应是一个宾语从句，而从句中wants缺少宾语，A. however 和D. whenever是不能作宾语的；排除A和D，whichever表示―无论哪一个，无论哪些‖，应表示一定范围内的人或物，此处没有涉及事物的范围，所以应选B．whatever，表示―无论什么‖。
6. ______leaves the room last ought to turn off the lights. (MET1988)
A. Anyone
B. The person
C. Whoever
D. Who
答案C。本题句子的意思是：无论谁最后离开房间一定要把灯关掉。本题考查连接代词whoever引导的名词性从句，连接代词whoever可以引导名词性从句，并在从句中作主语，相当于any person who或The person who, 意为―一切……的人‖。而anyone和the person均非连词，不能引导从句，况who leaves the room last意为―某个最后离开房间的人‖，与题意不符，如果要选A. Anyone或B. The person，都必须在它们后面再加上引导定语从句的关系代词who。如果要选D. Who就体现不出―无论谁‖的含义了。
7. Sarah hopes to become a friend of ______shares her interests. (Shanghai1995)
A. anyone
B. whomever
C. whoever
D. no matter who
答案为C。本题句子的意思是：Sarah希望跟自己有共同爱好的人交朋友。疑问词+ever引导的名词性从句与no matter+疑问词引导的从句的区别是：前者既可以引导名词性从句也可以引导让步状语从句；后者只能引导让步状语从句。首先排除A和D，从句中需要的是主语，所以whomever也不行。
8. ---- I drove to Zhuhai for the air show last week.
---- Is that ______ you had a few days off ? ( NMET1999)
A. why
B. what
C. when
D. where
答案A。根据语境，甲说上周驱车去珠海观看航模展览。乙据此来询问甲这是否是请几天假的原因，故答案是A。答案B,C, D均与该题语境不符。根据上句提供的语境，下句应该问―那就是你为什么离开几天的原因吗？‖
9. I still remember ______ this used to be a quiet village. ( NMET1993)
A. when
B. how
C. where
D. what
答案A。根据从句中缺少的句子成分是状语，排除D．what，而答案C, D均与题意不符，所以应选A．when。used to be表示一种过去存在的状态，本句的意思是―我仍然记得这里在什么时候是个宁静的地方。‖
10．I read about it in some book or other，does it matter ____ it was？（2001春季招生）A．where B．what C．how D．which
答案D。这是一个主语从句。主语从句中缺少表语。从上句的意思分析，应是哪本书，所以要填which，这句话的意思是―我在某本书中读到过有关这方面的内容，是哪一本书重要吗？‖。
11. Information has been put forward ____ more middle school graduates will be admitted into universities.
A. while
B. that C when D. as (2001年上海)
答案B。该题考查that引导的同位语从句。同位语从句通常由that引导，接在fact, news, promise, possibility, information, doubt, message名词后，用来解释或说明名词的内容。
12. —I think it is going to be a big problem.
—Yes, it could be.
—I wonder ______ we can do about it. (北京2002春季)
A、if
B、how
C、what
D、that
答案C。本题考察名词性从句的连接词的用法。wonder后面应跟宾语从句，而从句中的谓语动词do 是及物动词，可见从句缺少一个代替宾语的成分，我们可以用排除法排除不作成分的if和that，再排除引导方式状语的how，答案是C，句子的意思是―我们能就此做些什么‖。
八、专项考点练习一
1. ________that they found an unusual plant in the forest.
A. It is said
B. They are said
C. It said
D. It says
2. _____ caused the accident is still a complete mystery.
A. What
B. That
C. How
D. Where
3. It worried Mary a lot _____ she would pass the college entrance examination.
A. whether
B. if
C. that
D. how
4. Shanghai has taken on a new look. It isn’t like _____ it used to be .
A .what B. how C. that D. which
5. ____ is no possibility ______ Bob will win the first prize in the match.
A. There, that
B. It, that
C. There, whether
D. It, whether
6. Little Tommy was reluctant to tell the schoolmaster ____ he had done the day before.
A .that B. how C .what D. where
7. The old man smiled when he saw how pretty _____ up to be during the past few years.
A. had his daughter grown
B. would his daughter grow
C. his daughter would grow
D. his daughter had grown
8. Have you seen Mary lately? My boss wants to know _______.
A. how she is getting along
B. how is she getting along
C. what she is getting along
D. what is she getting along
9. ____surprised me most was _____such a little girl of seven could play the violin so well.
A. That; what
B. What; that
C. That; that
D. What; what
10. These wild flowers are so special I would do ______ I can to save them.
A. whatever
B. which
C. that
D. whichever
11. _____ helped to save the drowning girl is worth praising.
A. Who
B. Anyone
C. Whoever
D. The person
12. Eat _____ you like and leave the others for _____ comes in late.
A. any; who
B. every; whoever
C. whichever; whoever
D. either; whoever
13. ____ she couldn’t understand was _____ fewer and fewer students showed interest in her lessons.
A. What; why
B. That; why
C. What; because
D. Why; that
14. It was ____ he said ___ disappointed me.
A. What; that
B. That; that
C. What; what
D. That; what
15. It was ordered that all the soldiers _______to the front.
A. should send
B. must be sent
C. should be sent
D. must go
16. The true value of life is not in ______, but _______.
A. which we get; what give we
B. what we get; what we give
C. which do we get; what do we give
D. how we get; that we give
17. We are all for your proposal that the discussion _______.
A. be put off
B. was put off
C. should put off
D. is to be put off
18. Go and get your coat．It's ____ you left it．
A. where
B. there
C. here where
D. where there
19. Sarah hopes to become a friend of ______ shares her interests.
A. anyone
B. whomever
C. whoever
D. no matter who
20. You can’t imagine ______ when they received these nice Christmas presents.
A. how they were excited
B. how excited they were
C. how excited were they
D. they were how excited
名词性从句练习二
1.It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmosphere today.
A. that
B. when
C. what
D. how
2.___ made the school proud was ___ more than 90% of the students had been admitted to key universities.
A. What; because
B. What; that
C. That; because
3. –Are you still thinking abut yesterday’s game?
-Oh, that’s ____.
A. what makes me feel excited
B. whatever I feel excited about
C. how I feel about it
D. when I feel excited
4. –look at what you are doing!
-Ah, I wonder ___ this boot won’t fit me. I’ve been trying to put it on the wrong foot.
A. how
B. if
C. why
D. that
5. Although most of them have no doubt ___ he will pass the exam, I still think there is something about ___ he has really got everything ready.
A. whether; that
B. that; whether
C. that; that
D. whether; whether
6. The question came up at the meeting ___ we had enough money for our research.
A. that
B. what
C. which
D. whether
7. ___ ways will be found to stop pollution or not is just ___ worries the public.
A. If; why
B. Whether; which
C. If; that
D. Whether; what
8. I really wonder ___ he has posted me many packages ___ we worked together.
A. why; when
B. why; since
C. when; before
9. ___ David says sounds right to Helen. That’s why she has made up her mind to leave with him happens.
A. Whatever; whatever
B. No matter what; whatever
C. Now matter what; whatever
D. Whatever; however
10. Some of the scientists held the point ___ ___ the book said was tight.
A. what; what
B. what; that
C. that; that
D. that; what
11. __ she wouldn’t understand was ___ fewer and fewer students showed interest in her lessons.
A. What; why
B. That; what
C. What; because D . Why; that
12. The difficulty we now meet with is ___ we can persuade him to tell the truth.
A. whether
B. that
C. what
D. why
13. There is little doubt ___ her advice is of greater value to us.
A. that
B. whether
C. why
D. if
14. IN some countries, __ is called ―equality‖ does not really mean equal rights for all people.
A. which
B. what
C. that
D. one
15. The fact came up ___ specific speech sounds are recognized by babies as young as 6 months old.
A. what
B. which
C. that
D. whose
16. There are signs ___ restaurants are becoming more popular with families.
A. that
B. which
C. in which
D. whose
17. Although Anne is happy with her success she wonders ___ will happen to her private life.
A. that
B. what
C. which
D. whether
18. We agreed to accept ___ they thought was the best tourist guide.
A. whatever
B. whomever
C. whichever
D. whoever
19. When I try to understand __ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.
A. why is does
B. what it does
C. what it is
D. why it is
20. The fact ___ most people believe nuclear war would be madness doesn’t mean that it will not occur.
A. that
B. which
C. that
D. why
21. __ we have achieved is attributed to the guidance of out teachers.
A. Whoever
B. Whatever
C. However
D. That
22. I have made it clear ___ I will never go back there.
A. when
B. that
C. where
D. however
23. His ability has never been in doubt – the question is ___ he is prepared to work hard.
A. that
B. if
C. where
D. whether
24. Sometimes we are asked ___ we think the likely result of an action will be.
A. that
B. what
C. if
D. whether
25. ___ some mammals came to live in the sea is not known.
A. Which
B. Since
C. Although
D. How
26. The people of the party were worried about Janet because no one knew ___ she had gone.
A. there
B. where
C. in which
D. the place where
27. They are so alike that you can’t tell ___ is which.
A. what
B. that
C. which
D. how
28. Did you want me to ask father ___?
A. when he would let us go
B. when would he let us go
C. when did he let us go
D. when he let us go
29. A new television series teach handicapped children ___ they can and should think about career development.
A. what
B. that
C. which
D. who
30. – I think it’s going to be a big problem.
- Yes, it would be.
- I wonder ___ we can do about it.
A. if
B. how
C. what
D. that
31. When you answer questions in a job interview, please remember the golden rule: always give the monkey exactly ___ he wants.
A. what
B. which
C. when
D. that
32. Please tell me ___ you want your coffee, back or white?
A. when
B. what
C. how
D. which
33. ___ she was invited to the ball made her very happy.
A. If
B. That
C. When
D. Because
34. It’s no longer a question now ___ man can land on the moon.
A. that
B. which
C. whether
D. what
35. Determination is a kind of basic quality and this is ___ it takes to do jobs well.
A. what
B. that
C. which
D. why
36. __ the flight to New York will be delayed is ___ I’m especially worried about.
A. If; what
B. Whether; that
C. When; that
D. Whether; what
37. All finished, we sat down to enjoy ___ we thought the most delicious dinner.
A. that
B. which
C. what
D. it
38. A decision was made ___ those who once led to the factory order to get a job would not be allowed to stay.
A. whether
B. when
C. that
D. once
39. Actually, girls can be ___ they want t be just like boys, whether it is a pilot, a nurse, or a general manager.
A. who
B. which
C. whatever
D. no matter what
40. – Don’t answer me with a simple ―Yes‖ or ―No‖.
Explain ___ possible.
A. whoever
B. whenever
C. however
D. whatever
41. – I’d like to invite you to a concert this evening.
- Thank you, but ___ I’ll be free I’m not sure at the moment.
A. while
B. if
C. when
D. whether
42. I kept looking at the man, wondering ___.
A. whether I have seen him before
B. where I had seen him before
C. that I had seen him before
D. when I had seen him before
43. The Great Wall is the last place ___ Mr Smith is going to visit before he leaves Beijing.
A. where
B. which
C. /
D. what
44. America was ___ was first called ―India‖ by Columbus.
A. that
B. where
C. what
D. the place
45. Id there a shop around ___ I can get a pack of cigarettes?
A. which
B. where
C. that
D. what
46. They are teachers and don’t realize to start and ran a company.
A. what takes it
B. what they take
C. what takes them
D. what it take
47. In each house there is a family group of men, ___ are related to each other.
A. all who
B. all
C. of whom
D. all of whom
48. The soldiers soon reached ___ was once an old temple ___ the villagers used as a school.
A. which; where
B. what; which
C. where; which
D. what; where
49. It was obvious ___ young artist’s latest work was much better than any other work in the exhibition.
A. that
B. because
C. but because
D. that this
50. You have not yet answered my question __ I can join in the arty tonight.
A. whether
B. if
C. which
D. that
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名词性从句完成句子专练
1. __________________________________________________________________________(她正在列表的) are the goods he wants to buy in the supermarket. (list)
2. ____________________________________________________(他说了谎)is certain. (lie)
3. _____________________________________________(山区孩子缺乏的) is pens and textbooks
4. ____________________________________(他在事故中幸存下来) is a miracle. (survive)
5. ___________________________________________________________________________(我们要派人去请的) were doctors and nurses at that time. (send)
6. ____________________________(她是否为比赛做好了准备) is still a question. (prepare)
7. _________________________________________________(我能与你们分享的) is your happiness and sorrow
8. It is clear _________________________________________(无论谁吃的多就会长胖) (put)
9. ___________________________________(他们是否去郊游) depends on the weather. (outing)
10. _________________________________________________(准时吃药) is important. (take)
11. ___________________________________(谁将被派到前线去) has not been decided. (send)
12. ________________________________________(我正在考虑的) is how can I solve the problem. (consider)
13. He seemed unable to take in ________________________________(我正在讲的内容) (talk)
14. _____________________________________________(作弄谁) is not allowed here. (trick)
15. _________________________________(你要当心的) is the danger you are facing. (look)
16. ____________________________________________(那个队会赢) is still unknown. (win)
17. ______________________________(他们什么时候开会) hasn’t been decided yet. (held)
18. _______________________________________________________(他们不能习惯的) was that there was no hot water to have bath with. (use)
19. _______________________________________________(他去哪里了) is not known yet. (go)
20. _______________________________________(犯人是怎样逃跑的) was found out. (escape)
21. ___________________________________________________________(他们的共同之处) is that they are not afraid of any difficulties. (common)
22. __________________________________(他为什么不说实话) wasn’t quite clear. (truth)
23. Is _____________________________________________________(你告诉我的) true? (tell)
24. It happened ___________________________________________________________________. (他们在这一点上意见不一致) (disagreement)
1. ______________________________________________________________(无论将来中国会取得什么成就), it is likely that many of them will be born in northwestern Beijing. (store)
2. I will never forget ___________________________________________________________(当我再一次踏上中国时我是多么的高兴) （foot）
3. They found themselves _______________________________________________________（被色彩缤纷的岩石所包围）（surround）
4. I found __________________________________ (大学里教的东西很令人失望) （what）
5. The nutrients in ______________________________________________________________ (任何掉到海里的东西) quickly become available. (whatever)
6. Even though the pure water is ________________________________________________ (给予海水……的东西) its main properties. (what)
7. Water, which seems so simple and common, is ___________________________________ (使生命变
得可能) （what）
8. Here, animals can enjoy all the benefits of the oceans _____________________________
_______________________________________________ (无需面对许多的危险) （have）
9. Water can absorb and give off a lot of heat without big changes in temperature, thus _________________________________________________ (创造一个稳定的环境) （create）
10. ____________________________________________________________________________ (所有这些组织所具备的共同点是) that they ask to be treated with respect. (common)
11.____________________________________ （你建议谁）be sent to work there? (suggest)
名词性从句超详细讲解]
名词性从句超详细讲解] 【文字｜双语| 教程】▼引导名词性从句的连接词可分为三类：连词（5个）：that （本身无意义。引导单一的宾语从句时that常可省略，但引导主语从句、表语从句、同位语从句时that通常不被省略）whether,if （均表示“是否”表明从句内容的不确定性）as if ,as though （[1] 均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词（10个）：what/ whatever, who/ whoever, whom/ whomever, whose/whosever, which/ whichever连接副词（7个）：when/ whenever, where/ wherever, how/ however, why不可省略的连词：1. 介词后的连词。2. 引导主语从句和同位语从句的连词不可省略。That she was chosen made us very happy.We heard the news that our team had won.3. 在从句中做成分的连词.比较whether与if 均为"是否"的意思。但在下列情况下，只可用whether：1. whether引导主语从句并在句首。 eg:Whether he can come to the party on time depends on the traffic.2. 引导表语从句。eg:The question is whether we can get in touch with her.3.whether从句作介词宾语。eg:I am thinking about whether I should quit my present job.4.if与whether都可以与or not 连用，但后面紧跟or not 时只能用whether。We didn't know whether or not she was ready.（此时只能用
名词性从句讲解与辨析
英语语法：名词性从句语法讲解 时间：2016-10-08作者：来源：精品学习网 笔者在此就名词性从句中的几大易错点进行分析，希望对同学们有所帮助。 [关系代词和关系副词的误用] 例1 （2016·全国卷Ⅰ） My uncle is the owner of a restaurant close to that I live. 解析 that→where。本题考查宾语从句，引导词在从句中充当地点状语，所以将that改为where。 例2 （2015·全国卷Ⅱ） As natural architects， the Pueblo Indians figured out exactly thick the adobe walls needed to be to make the cycle work on most days. 解析 how。根据语境和空后的形容词thick可知应用how引导宾语从句，此处表示要弄清楚到底土坯房的墙需要“多”厚。故答案为how。 点拨若从句缺少主语、宾语、表语或定语，则考虑用关系代词；若从句缺少时间、地点、原因、方式等状语成分，则使用关系副词 （when/where/why/how）。 [if和whether的误用] 例3 He asked her the question if they can be friends. 解析 if→whether。question后为同位语从句，只能用whether来引导，故而将if改为whether。 例4 It doesn’t matter so much you will come or not. 解析考查主语从句。句意：你来还是不来，这不怎么重要。代词it作形式主语，真正的主语是whether引导的主语从句。 点拨在表达“是否”这一意思时，我们经常会用到whether和if，但以下几种情况只用whether不用if： 1. 在表语从句、主语从句、同位语从句中； 2. 在介词后的宾语从句中。如：It all depends on whether they will
名词性从句用法详解
高一语法专题：名词性从句 在句子中起名词作用的从句叫名词性从句。名词性从句的功能相当于名词词组，它在 复合句中能担任主语、宾语、表语、同位语，因此根据它在句中不同的语法功能，名词性 从句又可分为主语从句、宾语从句、表语从句、同位语从句。 引导名词性从句的词叫做连接词，包括：1. 连词（在名词性从句中只起连接作用，不 作成分） 2. 连接代词（在名词性从句中作主语、宾语 或表语） 3. 连接副词（在名词性从句中作状语） I 主语从句：是在主句中作主语的从句。它由连接词引导，通常位于谓语动词之前。 连接词：
1. 连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether。 That he got the first prize excited him much. 他获得一等奖一事使他非常兴奋。 It is doubtful whether we can get there on time. 我们能否按时到达那儿还不确定。 1）that引导的主语从句：在从句中不作任何成分，也没有实际意义。一般情况 下that不可省略。 That light travels in straight lines is known to all. 众所周知，光沿直线传播。 That you don't like him is none of my business. 你不喜欢他不关我的事。 2）whether引导的主语从句：常置于句首，表示“是否”之意；
Whether he can finish his task on time is of great importance. 他是否能按时完成任务非常重要。 Whether you can succeed or not depends on how hard you work at it. 你能否成功取决于你努力的程度。 2.连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语，有具 体意义且不能省略。常见的连接代词有who, whom, whose, what, which, whoever, whomever, whatever, whichever。 What we should do with the problem is undecided. 我们如何处理这个问题还未作出决定。（what引导主语从句，不表疑问意义） Whom the letter was from is still unknown.
(完整版)名词性从句讲解及专项练习习题及其解答
名词性从句讲解 在复合句中起名词作用的从句叫做名词性从句。它包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。分析历届高考试题名词性从句考查的焦点主要有以下六个方面 1. 考查名词性从句的语序问题 2. 考查引导词that与what的区别 3. 考查it在名词性从句中作形式主语或形式宾语的用法 4. 考查whether与if的区别 5. 考查名词性从句中的疑问词+ever引导的名词性从句与no matter+疑问词引导的状语从句的区别 6. 考查名词性从句的虚拟语气问题 语法要点剖析 一、名词性从句 主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。因此，这四种从句通称为名词性从句。 引导名词性从句的连接词可分为三类： 连接词：that, whether, if （不充当从句的任何成分） 连接代词：what, whatever, who, whoever, whom, whose, which. 连接副词：when, where, how, why 1. 主语从句 作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如： What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。 It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。 Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。 有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下： （1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句 （3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句 另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有： It is necessary (important, natural, strange, etc.) that … It is a pity (a shame, no wonder, etc.) that… It is suggested (requested, proposed, desired, etc.) that… 2. 宾语从句 名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。 1. 由连接词that引导的宾语从句 由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如： He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。 We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。 注意：在demand、order、suggest、decide、insist, desire, demand, request, command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+ 动词原形”。例如： I insist that she (should) do her work alone. 我坚持要她自己工作。 The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。 2. 用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。 例如：I want to know what he has told you. 我想知道他告诉了你什么。 She always thinks of how she can work well. 她总是在想怎样能把工作做好。
名词性从句讲解与练习答案解析版
名词性从句
在句子中起名词作用的从句叫名词性从句。名词性从句的功能相当于名词词组，它在复合句中能担任主语、宾语、表语、同位语，因此根据它在句中不同的语法功能，名词性从句又可分为主语从句、宾语从句、表语从句、同位语从句。 引导名词性从句的词叫做连接词，包括： 1. 连词（在名词性从句中只起连接作用，不作成分） 2. 连接代词（在名词性从句中作主语、宾语或表语） 3. 连接副词（在名词性从句中作状语） 所有的名词性从句的语序都是陈述句语序。 主语从句：是在主句中作主语的从句。它由连接词引导，通常位于谓语动词之前。连接词： 1. 连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether。That he got the first prize excited him much. 他获得一等奖一事使他非常兴奋。 It is doubtful whether we can get there on time. 我们能否按时到达那儿还不确定。 1）that引导的主语从句：在从句中不作任何成分，也没有实际意义。一般情况 下that不可省略。 That light travels in straight lines is known to all. 众所周知，光沿直线传播。 That you don't like him is none of my business. 你不喜欢他不关我的事。 2）whether引导的主语从句：常置于句首，表示“是否”之意； if一般不引导主语从句。 Whether he can finish his task on time is of great importance. 他是否能按时完成任务非常重要。 Whether you can succeed or not depends on how hard you work at it. 你能否成功取决于你努力的程度。 连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语，有具体意义且不能省略。常见的连接代词有who, whom, whose, what, which, whoever, whomever, whatever, whichever。 What we should do with the problem is undecided. 我们如何处理这个问题还未作出决定。（what引导主语从句，不表疑问意义）Whom the letter was from is still unknown. 这封信是谁邮寄的还不清楚。 连接副词：在从句中起副词的作用，常作从句的状语，表示时间、地点、原因、方式等。常见的连接副词有when, where, how, why, whenever, wherever, however等。Why he did that wasn't quite clear. 他为什么做那件事还不十分清楚。 Where we can look up his address is still a problem. 我们在哪儿可以查他的地址还是个难题。 注意：it代替主语从句作形式主语
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高中英语名词性从句专题讲解及巩固练习 定义：起名词性作用的从句，叫名词性从句。本来该由名词充当的主语、宾语、表语和同位语部分，换由一个句子来充当，这样的句子就是名词性从句。 【归纳】 1.只能用whether,不能用if a.主语从句 b. 表语从句 c. 同位语从句 e. 介词后的宾语从句 f. whether to do 做动词宾语不能用if to do. g.whether or not 连在一起引导宾语从句时不用if. 2.that和what的区别
what除起连接作用外，还在名词性从句中充当成分，可做从句的主语、宾语、或表语。 that在名词性从句中不充当任何成分，只起连接作用。 例：I have no doubt that he will come. I have no idea what he did that afternoon. 一．主语从句：在复合句中作主句的主语。 ●__________ he is a famous singer is known to us. ●__________ he will go to America is not yet fixed. ●__________ she’s coming or not doesn’t matter too much. ●__________ broke the glass yesterday is not clear. 【keys】That; When/How; Whether; Who 【归纳】 1.为避免主语冗长,句子头重脚轻, 经常用it作形式主语, 主语从句放在后面作真正的主语。 例：That her hair was turning gray worried her a lot. -----It worried her a lot that her hair was turning gray. 常考句型： It’s likely / possible / important / necessary / clear that…
高中名词性从句讲解
名词性从句 名词性从句是由if, whether, that 和各种疑问词充当连接词所引导的从句，其功同名词一样。 一．主语从句 主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。 1. It 作形式主语和it引导强调句的比较 It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人是也可用who/whom。例如：
It is a pity that you didn't go to see the film. It doesn't interest me whether you succeed or not. It is in the morning that the murder took place. It is John that broke the window. 2. 用it 作形式主语的结构 (1) It is ＋名词＋从句 It is a fact that … 事实是… It is an honor that …非常荣幸 It is common knowledge that …是常识 (2) it is ＋形容词＋从句 It is natural that… 很自然… It is strange that… 奇怪的是… (3) it is ＋不及物动词＋从句
It seems that… 似乎… It happened that… 碰巧… (4) it ＋过去分词＋从句 It is reported that… 据报道… It has been proved that… 已证实… 3. 主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首。 (2) It is said , (reported) …结构中的主语从句不可提前。例如： It is said that President Jingo will visit our school next week. (right) That President Jiang will visit our school next week is said. (wrong)
名词性从句精讲(讲解+练习)
名词性从句精讲 在句子中起名词作用的句子叫名词从句(Noun Clauses）。名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。That he will come h ere surprises me. I know that he will come here. The news is that he will come here.The new that he will come here surprises me. 一、名词性从句的相同点：1.结构 2.连接词 引导名词性从句的连接词可分为三类： 从属连接：that, whether, if（不充当从句的任何成分） 连接代词：what, whatever, who, whoever, whom, whose, which. 连接副词：when, where, how, why 二、四大名词性从句的剖析 1.主语从句 作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that 在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如： That he suddenly fell ill last week made us surprised. 上星期他突然生病了让我们很惊讶。 Whether he will be able to come remains a question.他是否能够来仍然是一个问题。What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。 有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下： （1）It + be +形容词+主语从句It is very interesting that he likes such kind of books. （2）It + be +名词+主语从句It is a pity that he missed the lecture. （3）It + be +动词的过去分词+ that从句It is said that they have won the game. （4）It +不及物动词+ that从句It seems that something is wrong with the computer. 另注意在主语从句中用来表示必须、理应如此、建议、要求等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有： It is necessary (important, natural, strange, etc.) that … It is suggested (requested, proposed, desired, etc.) that… 2.宾语从句 名词性从句用作宾语叫宾语从句，在句中可以作谓语动词或介词的宾语。引导宾语从句的连接词与
【英语】英语名词性从句专项含解析
【英语】英语名词性从句专项含解析 一、初中英语名词性从句 1．_____Macao has achieved shows _____"one country, two systems" principle is the best solution to the Macao and Hongkong question, left by history. A. That; what B. What; that C. What; what D. That; that 【答案】 B 【解析】【分析】句意：澳门取得的成就表明，“一国两制”原则是解决历史遗留下来的澳门和香港问题的最好办法。分析句子可知，_____Macao has achieved为主语从句，从句中achieve缺少宾语，所以第一个空用what来充当宾语。再分析句子可知，shows后接宾语从句，从句句意和结构完成，所以第二个空应填连接词that。故选B。 【点评】考查名词性从句，本题涉及what引导的主语从句和that引导的宾语从句。 2．Has it been announced ______? A. when are the planes to take off B. that are the planes to take off C. where are the planes to take off D. when the planes are to take off 【答案】 D 【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗？此处是when引导的主语从句，且要用陈述句语序，故选D。 【点评】考查名词性从句，it作形式主语，关系副词when引导的从句作真正的主语。 3．Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird's nest”. A. which B. that C. what D. where 【答案】 C 【解析】【分析】考查主语从句。What引导主语从句______ I call my “home”且 What在从句中充当call的宾语。故选C。 4．—Tell me something about your adventure in the rainforest, please. — We lost our way in the forest and ___ made matters worse was ___ night began to fall. A. what; that B. it; that C. it; because D. what; because 【答案】 A 【解析】【分析】考查名词性从句的连接词。第一空what作主语从句的主语；第二空为表语从句的that。 5．It is a rule in his family that _______ comes home first should cook the dinner.
名词性从句详细讲解及练习题
高中英语从句大全 一．名词性从句 起名词性作用的从句叫名词性从句英语当中其名词性作用的成分有主语，宾语，表语，同位语，当这些成分有一个句子来代替就构成了名词从句，主要有主语从句，宾语从句，表语从句，同位语从句。 1.表语从句 1.定义：用作表语的从句叫做表语从句。（be动词,四“变得”：become, get,turn，go；感官动词look,, smell,sound，taste，feel；及grow, turn out，appear，keep等） 引导表语从句的词有从属连词that、whether、as though(if)； 关系代词who, what, which, whom, whose, whatever, whoever, whomever, whichever 等； 关系副词when, where, why, how, however, whenever, wherever等。 可以接表语从句的连系动词由be, look, remain, seem等。 The trouble is that we are short of money. That is why stone walls are used instead of fences around New England fields. At that time, it seemed as if I couldn't think of the right word anyhow 2、由从属连词that，whether引导的表语从句。 that在引导表语从句时无词义，在口语中，间或可以省略。而whether有词义，意为、“是否”。这时主句的主语常常是些抽象名词，如question，trouble，problem等。表语从句对主句主语进行说明、解释，使主语的内容具体化。 The trouble is that I have lost his address The question is whether they will be able to help us.问题是他们是否能帮我们。 The trouble is (that) she has lost his money. The question is whether we need more ice cream. The problem was that it was too valuable for everyday use. What she could not understand was that fewer and fewer students showed interest in her lessons. 3、由关系代词引导的表语从句。 关系代词who, what, which, whom, whose, whatever, whoever, whomever, whichever 等引导表语从句，在句中作主语、宾语、表语，关系代词不能省略。 The question is which of us should go. The problem was who could do the work.. That's what he is worrying about. That's what we should do. The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。 The question is how he did it.问题是他是如何做此事的。 That was what she did this morning on reaching the attic.那就是她今晨上了阁楼干的。 4、由关系副词引导的表语从句。 Go and get your coat.
人教版中考英语专项训练 名词性从句专项讲解及练习
人教版中考英语专项训练名词性从句专项讲解及练习 一、初中英语名词性从句 1．______ has caused great confusion is ______ he made it without anyone else's help. A. What; that. B. What; how. C. It; how. D. It; that. 【答案】 B 【解析】【分析】句意：让人极大困惑的是他如何在没有别人帮助的情况下做到这一点的。表示“让人困惑的事情”用what引导主语从句，表示“如何做到的”用how表方式，引导表语从句。故选B. 【点评】考查名词性从句，本题涉及what引导的主语从句和how引导的表语从句。 2． is even more important is the earth cooled down, water began to appear on its surface. A. When; that; when B. What; whether; as C. What; that; as D. lt; whether; as 【答案】 C 【解析】【分析】这题考查从句的用法，第一空填what引导主语从句，在主语从句中what做主语，第二空填that引导表语从句，在表语从句中，as是引导时间状语从句，句意是：甚至更重要的是：随着地球的冷却，水开始出现在表面。选C。 3．—Tell me something about your adventure in the rainforest, please. — We lost our way in the forest and ___ made matters worse was ___ night began to fall. A. what; that B. it; that C. it; because D. what; because 【答案】 A 【解析】【分析】考查名词性从句的连接词。第一空what作主语从句的主语；第二空为表语从句的that。 4．It is a rule in his family that _______ comes home first should cook the dinner. A. anybody B. who C. whoever D. who that 【答案】 C 【解析】【分析】句意：在他的家里有个规定，就是先到家的人要先做饭。whoever 有两个词义：1no matter who，在这种用法时引导一个让步状语从句；2anybody that，在这种用法时，它连接一个名词性从句，在本题中它连接的是主语从句。这里就是第二个用法。所以选C。
名词性从句用法讲解与专项练习题及答案
名词性从句用法讲解与专项练习题及答案 名词性从句包括主语从句、宾语从句、表语从句和同位语从句。高考常从连接词的选择、语序、语气、时态等方面来考查。名词性从句中的连接词有连词that / whether / as if，连接代词what / who/ which /whose / whatever / whoever / whomever / whichever，连接副词where /when /why / how / wherever / whenever。 第1讲引导名词性从句的连接词 考点1. 引导名词性从句的连接词有哪些 有学生认为，引导同位语从句只能用that, 这句话对吗？先看下面几个句子。 ①I have no question that he will come. ②I have a question whether he will come ③I have a question when he will come. 我们可以看出：上面三个句子中question后面都是同位语从句，都是说明question的内容的。 在句①中，同位语从句的原句是陈述句，由that引导；在句②中，原句是一般疑问句，由whether引导； 在句③中，同位语从句的原句是特殊疑问句，特殊疑问词也起着连接作用。 其实，所有名词性从句的连接词都有上面的三种情况。
宾语从句： I don’t know that he will come. I don’t know whether/if he will come. I don’t know when he will come. 表语从句： What I don’t know is that he will come. What I don’t know is wheth er he will come. What I don’t know is when he will come. 主语从句 That he will come is obvious. Whether he will come isn’t known yet. When he will come isn’t known yet. 1. 【2010浙江】It is uncertain ______ side effect the medicine will bring about, although about two thousand patients have taken it. A. that B. what C. how D. whether 2. 【2012全国新课标】It is by no means clear ______ the president can do to end the strike. A. how B. which C. that D. what 3. 【2012山东】It doesn’t matter ______ you pay by cash or credit card in this store. A. how B. whether C. what D. why
名词性从句讲解
名词性从句 一：examples: What you need is more practice. When we shall have our sports meet is still a question. I don’t know where he lives. This is where he lives . = This is the place where he lives. Give it to whomever you trust. I find it wrong that we blamed him for all of this. That was how they were defeated. She looked as if/though she was going to cry. Mr Smith left word with my assistant that he had returned to his own country . We got the news that our team had won the match. We can’t believe th e news that he told us. （That引导的定从句与同位语从句的区别） 二：名词性从句引导词（连接词） a. 连词：that ; if /whether ; b. 连接代词what /whatever which /whichever who/ whoever whom/whomever whose c. 连接副词when /whenever / where / whevever / why/ how That 从句： 1.主语从句：it That we are invited to a concert this evening is good news to us. （主谓一致） It is +adj +that … It is obvious that he is the best . It is +n +that ... It is no wonder that he won the first prize. It is +done +that …it is reported that he has gone abroad. 2. 宾语从句： a. Do you know (that) he has joined the army? b. We consider it necessary that he should improve his pronunciation. c. She said that she had been there and that she liked it very much. d. I know nothing about his career except that he is a graduate of Oxford University. He differed from classmates in that he devoted his spare time to reading. You may depend on it that I shall always help you. 3. 同位语从句： (fact, hope, desire, thought , suggestion, idea, news, problem, possility ,chance ) News came from the school office ____ Wang Lin had been admitted to Beijing University. A.that B. when C. which D. where 总结that 的省略问题 4. 表语从句：
高考名词性从句详解
高考名词性从句 目录 一、引导名词性从句的连接词 二. 主语从句 三、宾语从句 四、表语从句 五. 同位语从句 六、名词性that-从句 七、名词性wh-从句 八、否定转移 九、高考热点透视 十、专项考点练习 在句子中起名词作用的句子叫名词从句(Noun Clauses）。名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。 一、引导名词性从句的连接词 二.主语从句
What he wants to tell us is not clear. Who will win the match is still unknown. Where the English evening will be held has not yet been announced. 注意： 有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下： （1）It + be + 名词+ that从句 （2）It + be + 形容词+ that从句 （3）It + be + 动词的过去分词+ that从句 （4）It + 不及物动词+ that 从句 当堂练习： （1）It is immediately clear ____ the financial crisis will soon be over. （2）____ was most important to her, she told me, was her family. （3）watch was lost is unknown. （4）he finished writing the composition in such a short time surprised us all. 三、宾语从句 We must never think (that) we are good in everything while others are good in nothing. He has told me that he will go to Shanghai tomorrow. （由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。） I want to know what he has told you. 注意： 当think, believe, imagine, suppose等等动词引起的否定性宾语从句中，要把上述主句中的动词变为否定式。即将从句中的否定形式移到主句中。例如： We don’t think you are here. 我们认为你不在这。 I don’t believe he will do so. 我相信他不会这样做。 当堂练习： （1） （2）She always thinks of she can work well. （3）She will give 四、表语从句 The fact is that we have lost the game. That’s just what I want. The reason why he was late was that he missed the train by one minute this morning . 当堂练习： （1 （2）He has become he wanted to be ten years ago. （3）You are saying that everyone should be equal, and this is ____ I disagree.