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it作形式主语常见句式

it作形式主语常见句式
it作形式主语常见句式

it作形式主语常见句式

动词不定式,动名词或主语从句作主语时,通常把它们放在谓语动词前,而用it作形式主语,放到句首,常见句型有:

1. It + be + 形容词+主语从句,如:

It is uncertain whether he can come to Jenny’s birthday party or not.

2. It + be + 名词词组 + 主语从句,这类名词有:a fact, a pity, a s hame, an honour,a question等,如:

It’s a pity th at you missed the exciting football match.

It remains a question whether he will come or not.

3. It + be + 过去分词 + 主语从句,这类过去分词有:announced, beli eved, expected, hoped, decided, reported, said, shown等,如:It is reported that 16 people were killed in the earthquake.

It is not decided who will give the operation to the patient.

4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及

物动词有:appear, happen, seem等,如:

It seemed that he didn’t tell the truth.

It happened that I was out when he called.

5. It + be + 形容词 + for sb.)+ 动词不定式

这类句型常用形容词easy, difficult, hard, important, possible,wi se等作表语,有时候为了强调不定式动作的执行者,常在不定式前加for sb,如:

It’s necessary for the young to master two foreign language.

It is unwise to give the children whatever they want.

这类形容词有:easy, difficult, hard, important, possible,wise

6. It + be + 形容词 + of sb. + 动词不定式,这类形容词常是表示心理品质,性格特征的形容词,如:kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和这些形容词可以构成主系表结构。如:

It’s very kind of you to help me with the work.

=You are kind to help me.

It seemed selfish of him not to share his dictionary with others.

=He seemed selfish not to share his dictionary with others.

7. It + be +名词词组 + 动词不定式,如:

It is not a good habit to stay up too late.

8. It + be + 名词或形容词 + 动名词,这类名词和形容词常常是:good, no good, no use, a waste of, useless, senseless等,如:

It’s a waste of time talking to her any more.

It is no use arguing about the matter with him.

9. It + take ( sb. )+ 时间(金钱)+ 动词不定式,如:

It took the workers almost three years to finish building the da m.

It will take a whole day to get to the top of the mountain on foot.

实战演练:

1. It is generally considered unwise to give a child he or she wants. (NMET 1997)

A. however

B. whatever

C. whichever

D. whenever

2. In fact is a hard job for the police to keep order in an important football match. (2001 上海)

A. this

B. that

C. there

D. it

3. is a fact that English is being accepted as an internati onal language. (NMET1995)

A. There

B. This

C. That

D. It

4. Is necessary to take off our shoes when we enter the l ab? (MET88)

A. everyone

B. this

C. her

D. it

5. ________ will take you a lot of time to find him in the crowd.

A. It

B. I

C. We

D. They

6. It is no use his _________ there, the situation is hopeless now.

A. to go

B. to be going

C. going

D. having gone

7. It is never too late to learn, ________?

A. is it

B. isn’t it

C. does it

D. doe sn’t it

8. ___________ is known to all that Shenzhou VI Launched Successfull y.

A. As

B. What

C. It

D. That

9. _______ is reported in the newspaper,the Earthquake in east Chin a's JiangxiProvince killed 13 people

A. It

B. As

C. That

D. What

10. ___________ certain that his invention will make people’s life c onvenient.

A. That’s

B. This is

C. It’s

D. What’s

11. _________ that there is another football match on the air this e vening.

A. It says

B. It was said

C. It is said

D. What was said

12. __________ that their daughter got an opportunity to study abroa

d.

A. It’s a exciting news

B. This is an exciting news

C. This is exiting news

D. It’s exciting news

参考答案:

1——5 BDDDA 6——10CACAC 11——12CD

It作形式主语

It作形式主语和形式宾语,虽然是我们高中就学过的语法点,但在考研英语题型中,无论是在阅读还是翻译,常会考查该知识点。 一.it作形式主语。 英语中不定式、动名词、主语从句在作主语时主语往往显得很长,使整个句子看上去有点头重脚轻,这样就借助“it”来作形式上的主语,而把真正的主语移到句子后边去,使全句结构上前后平衡。“it”并无实际意义。It之后的谓语部分,可以是be+形容词,be+名词(词组),或be+过去分词等。 it 作形式主语,主要分为下列三种情况:不定式作主语、动名词作主语和名词从句作主语。具体分析如下: 一、不定式作真正主语主要用于下列句型: 1. It + is/was + adj./n.+ to do sth. A.名词作表语。主要有a pity, a pleasure, an idea等。 It is a good idea to think this way. 这样考虑问题是个好办法 除be外,其他动词也有跟名词的情况。例如: It seems a pity to waste the food. 浪费这些食物真可惜。 B. 形容词或形容词短语作表语。分两种情况: 1.下列形容词;kind,good,nice,clever,wrong,right,foolish,wise,unwise,stupid,rude,careless,cruel,brave ,naughty,polite,selfish等词作表语时,不定式前常可加一个由of引起的短语,来说明不定式指的是谁的情况。形容词表示不定式逻辑主语的特征,即形容词用来描述不定式行为者的性格、品行等。例如: It was foolish of you to leave school.你中途退学,真是傻瓜。 2. 其他形容词作表语,常见的形容词有:necessary, hard,important, difficult, easy, possible,common等。 It is necessary to learn English. 需要注意的是:动词不定式作主语,一般情况下用it作形式主语,而把动词不定式(从句)放在后面。也可以直接用不定式作主语。例如: It is wrong to tell lies. = To tell lies is wrong. 撒谎是不对的。 但在疑问句和感叹句中,只能用it作形式主语。例如:

It作形式主语常见用法

It作形式主语常见句型 1.It + be +形容词+ that-从句 可用于此句型的形容词有: wonderful, true,good,right,wrong,(un)important,useless,surprising,disturbing,frightening,alarming,clear,unusual,lucky,certain, necessary等。如: ①It is quite certain that he will be at the meeting.他将出席会议是无疑的。 ②It is surprising that he came late to school this morning.他今天早上迟到真令人惊讶。 ③It is important that we (should) study hard.我们努力学习是很重要的。 注意: 该句型中的形容词是(un)important, necessary等时,从句应为(should )+动词原形。 It is important that we (should) learn English well. It is necessary that he (should) rember these words. 2.It + be +名词+ that-从句 适用该句型的名词(词组)有: a pity,an honor,a good thing,a fact,a surprise,a question,a shame,a custom, a truth,our hope, no wonder, good/bad manners等。如: ①It is a pity (that) you missed the sports meeting last week.你错过了上周的运动会太可惜了。 ②It is a fact that Engl ish is being accepted as an international language.事实上英语已经被作为一种国际语言而接受了。

It”作形式主语和形式宾语用法详解

新希望英语语法精讲------“I t”作形式主语和形式宾语“It”作形式主语和形式宾语的用法详解 It作形式主语和形式宾语用法,是英语学习的主要语法项目之一。无论是单项选择,还是完行填空,it用法始终是反复考查的重、热点之一。现将it在特殊句型中作形式主语和形式宾语用法,进行如下归纳分析,以供学习参考。一、 It 用作形式主语当不定式(短语)、动名词(短语)或从句在某个句子中作主语时,为保持句子结构前后平衡,避免头重脚轻,因此常用it作形式主语置于句首,而将真正的主语放在句尾。此时it只起先行引导作用,本身无词义。 e.g. It is wrong to tell a lie. (说谎是错误的。) 〔It为to tell a lie 的形式主语〕 It is no use arguing about it. (争吵是没用的。) 〔It为arguing about it的形式主语〕 It is uncertain who will come. (谁要来还不确定。) 〔It为who will come 的形式主语〕 It 作形式主语的常见句型: ① It + be + 形容词 + to do sth. / doing / that …. e.g. It is very important to learn a foreign language. (学一门外语非常重要。) It is useless crying over the spilt milk. (覆水难收。)

It was really surprising that she married a man like that.(她嫁给那样的男士真让人惊讶。) ② It + be +名词词组 + doing / that …. e.g. It is no good telling lies. (撒谎没好处。) It is a pity that you didn’t go to see the film yesterday. (你昨天没看成那部电影真遗憾。) It is a truth that there would be no new China without the Communist Party. (没有共产党就没有新中国,这是毋庸质疑的。) ③ It + be + 过去分词 + that …. 该句型常见动词有:say, hope, think, suppose, expect, report, know, believe, decide, etc. e.g. It is said that they have invented a new type of computer. (据说他们发明了一种新型电脑。) It is believed that China will become one of the strongest countries in the world. (大家都相信中国将会步入世界强国之列。) It was reported that more than 170 thousand people died in the 2004 tsunami. (据报道,至少有十七万人在2004年那场海啸中丧生。) ④ It + seems / appears / happens等不及物动词 + that ….

It作形式主语的几大基本句型

“It”作形式主语的几大基本句型 2011-06-07 22:27:53| 分类:语法归纳| 标签:|字号大中小订阅 ◇It’s +形容词/名词+that +从句 It is necessary that you train yourself before the walk. It is important that you have your own support team. It was a pity that he lost the game. It’s a pity that you missed the exciting football match. ◇It’s +形容词+(for sb) +to do sth It is difficult to walk through eight country parks. It is useful to have support teams. It is important for him to finish it in ten hours. It is necessary for people to learn team spirit. 特别提醒: ☆该句型的否定结构为It’s +形容词+(for sb) +not +to do sth It is very important not to give them too much food. (7B 100) It is very polite not to speak loudly in public. ☆该句型有时可以与It is + adj. + that从句的句型互换使用,意思不变。如:It is necessary for you to train yourself before the walk. = It is necessary that you will train yourself before the walk. ◇It’s +名词+to do sth It’s everyone’s duty to obey the law. It is not a good habit to stay up too late. As a student, it is bad manners to come late to class. It is my turn to clean the blackboard.

初二it做形式主语讲解

'tI形式主语 Examples: 1. It' necessary for the young to master two foreign language 2. It is no use arguing about the matter with him 3. It'a pity that you fail the exam. It用作形式主语 当不定式(短语)、动名词(短语)或从句在某个句子中作主语时,为保持句子结构前后平衡,避免头重脚轻,因此常用it作形式主语置于句首,而将真正的主语放在句尾。此时it只起先行引导作用,本身无词义。 一、代替动词不定式做主语 拒绝是令人遗憾的。 It 'a pity to refuse. 记住这点是很重要的。 It 'very importa nt to remember this point. 1. It + be + 形容词+ for sb + to do sth 这类句型常用形容词(通常为描述事件的形容词)easy, difficult, hard, important, possiblewise, necessary, impossible, likel y, obvious, use 等作表语,有时候为了强调不定式动作的执行者,常在不定式前加for sb,译为“对某人来说做某事怎么样” It ' s necessary for the young to master two foreign Ianguages. It is unwise to give the children whatever they want. 2. It + be + 形容词+ of sb. + to do s_jh 这类形容词常是表示心理品质,性格特征的形容词,如:kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, con siderate等。某人和这些形容词可以构成主系表结构。 It ' s very kind of you to help me with the work. =You are kind to help mewith the work. It s foolish of you to drive a car after drinking. =You are foolish to drive a car after drinking. 3. It + be +名词词纟组+ to do sth It is not a good habit to stay up too late. 4. It takes/took sb +some time/ money to do st做某事花了某人多长时间或多少钱 It took the workers almost three years to finish building the dam. It will take a whole day to get to the top of the mountain on foot. 二、it代替动名词做形式主语 It is no good use crying over spilt milk.覆水难收)

it的用法归纳

?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 一、it 作人称代词的用法 1.指事物 作为人称代词,it 可以除人以外的一切事物或动物。如: I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦,可是我乐意干。 “Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。 2.指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如: Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门,一定是邮递员。 【说明】在答语中,常用来指本人,如说It’s me。

3.代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如: “What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题,是吗? 二、it 作非人称代词的用法 1.基本用法 it 作非人称代词的用法,主要用于指时间、距离、价值、天气、气候及温度等自然现象。如: It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2.用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式,有时也用“should+动词原形”) It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)

常用it作形式主语的句型结构

常用 it 作形式主语的句型结构 ?It + be +形容词+ that-从句 可用于此句型的形容词有 : wonderful, true,good,right,wrong,(un)important ,useless,surprising, clear, unusual, lucky, certain, necessary等。女口: ①It isquite certain that hewill be at the meeting. ②It is surprising that he came late to school this morning. ③It isimportant that we(should) study hard 注意:该句型中的形容词是(un) important, necessary等时,从句应为(should )+动词原形。 ?It + be + -ed 分词 + that-从句 适用该句型的过去分词主要有:said,reported, announced,hoped,thought, told, believed, expected, decided, suggested,known 等。如: ①It ishoped thatonedaytheywill haveenoughanimalsto setthem free ②It is well known that the earth goes around the sun. ③It is suggested that the sports meeting (should ) be put off until next week. 注意:该句型的过去分词是suggested时,从句应为(should )+动词原形。 ?It + be + 名词 + that-从句 适用该句型的名词 (词组) 有:apity, anhonor, agood thing, afact, asurprise, goodnews, one's duty 等。如: ① It isapity (that)you missedthesportsmeetinglastweek. ② It isafactthatEnglish isbeingacceptedasaninternational language. ?It +seem/ appear/ happen 的适当形式+ that 从句。该句型常可以转换成含不定式的简单句。如: ①It seemsthat thereisabig wastepipecomingdown from the town. T There seemsto be a big waste pipe coming down from the town. ②He appearedto becalm,but insidehisheartwasbeatingwildly with fear. t It appearedthathewascalm,butinsidehisheartwasbeatingwildly with fear. ?It does n't matter ( It 'no won der; It does n 'make much differe nee 等) + when/ where/ which/ whether 等从句。如: ①Does it matterif hecan'tfinish thejob ontime? ②Theyareallclassmates. It isnowonder they should help eachother with their studies. ?It + be+ adj./ n. (for sb./ ofsb.)+ todosth. 该句型中的形容词通常是表示事物的特点或特征的如 difficult , hard, easy, impossible, necessary, important 等,此时用 fo r ;或表示人的性格特征或特点的如nice, good, bad, kind, silly, foolish, wise, clever, careless, rude, brave, cruel, careful, grateful等,这时要用 of。如: ① It is foolish of you to give up such a good chance. ② It is necessary for college students to master at least a foreign language It 作形式主语常见句型 动词不定式,动名词或主语从句作主语时,通常把它们放在谓语动词前,而用 it 作形式主语,放到句首,常见句型有:

(完整版)it做形式主语用法大全含练习及问题详解

It作形式主语常见句型 动词不定式,动名词或主语从句作主语时,通常把它们放在谓语动词前,而用it作形式主语,放到句首,常见句型有: 1. It + be + 形容词+主语从句,如: It is uncertain whether he can come to Jenny’s birthday party or not. 2. It + be + 名词词组+ 主语从句,这类名词有:a fact, a pity, a shame, an honour,a question 等,如: It’s a pity that you missed the exciting football match. It remains a question whether he will come or not. 3. It + be + 过去分词+ 主语从句,这类过去分词有:announced, believed, expected, hoped, decided, reported, said, shown等,如: It is reported that 16 people were killed in the earthquake. It is not decided who will give the operation to the patient. 4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有:appear, happen, seem等,如: It seemed that he didn’t tell the truth. It happened that I was out when he called. 5. It + be + 形容词+ for sb.)+ 动词不定式 这类句型常用形容词easy, difficult, hard, important, possible,wise等作表语,有时候为了强调不定式动作的执行者,常在不定式前加for sb,如: It’s necessary for the young to master two foreign language. It is unwise to give the children whatever they want. 这类形容词有:easy, difficult, hard, important, possible,wise 6. It + be + 形容词+ of sb. + 动词不定式,这类形容词常是表示心理品质,性格特征的形容词,如:kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和这些形容词可以构成主系表结构。如: It’s very kind of you to help me with the work. =You are kind to help me. It seemed selfish of him not to share his dictionary with others. =He seemed selfish not to share his dictionary with others. 7. It + be +名词词组+ 动词不定式,如: It is not a good habit to stay up too late. 8. It + be + 名词或形容词+ 动名词,这类名词和形容词常常是:good, no good, no use, a waste of, useless, senseless等,如: It’s a waste of time talking to her any more. It is no use arguing about the matter with him. 9. It + take ( sb. )+ 时间(金钱)+ 动词不定式,如: It took the workers almost three years to finish building the dam. It will take a whole day to get to the top of the mountain on foot.

it做形式宾语的翻译练习

1. 我认为每天做运动很有必要。(1—3用find it adj to do ) __________________________________________________________________________ 2. 我在交朋友上有麻烦,我发现和别人交流很困难。 __________________________________________________________________________ 3. 如果你对英语感兴趣,你会发现学习英语很容易。 ___________________________________________________________________________ 4. 我建议你多参加课外活动。(4—11用宾语从句) ___________________________________________________________________________ 5. 我建议你养成每天读英语的好习惯. ___________________________________________________________________________ 6. 老师要求我们不能考试作弊。 ___________________________________________________________________________ 7. 他们要求我们不能把车停放在这里。___________________________________________ 8. 老师命令我们充分利用时间去丰富我们的知识。 __________________________________________________________________________ 9. 我命令他不要花费太多时间玩电脑。 ___________________________________________________________________________ 10. 他妈妈坚持要求他穿上外套。_________________________________________________ 11. 小男孩坚持说他没偷钱,坚决要求被立刻释放。 ___________________________________________________________________________ 12. 我认为向别人学习很有必要。(12---14think/find it adj +宾语从句) ___________________________________________________________________________ 13. 我发现我们养成好的习惯很重要。 ___________________________________________________________________________ 14. 我发现我们向老师寻求帮助很有必要。 ___________________________________________________________________________ 15. 我使每天早点起床成为一个习惯。(make it a habit that+宾语从句) ___________________________________________________________________________ 16. 老师使保持教室干净成为我们的责任。(make it a duty that+宾语从句) ___________________________________________________________________________ 17. 他考试失败的原因是他没努力学习。 ___________________________________________________________________________ 18. 我申请这份工作的原因是我适合这份工作。 ___________________________________________________________________________ 19. 很显然他考得很好。 (It is obvious that…)_________________________________________ 20. 千真万确我没说谎。

初中英语语法:it用作形式主语的用法

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I t做形式主语句型整 理大全

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