表语从句 (1)

表语从句

在复合句中作表语的从句叫表语从句。表语从句位于主句的系动词之后。

构成：This is why he did it. .

常见系动词: be feel, seem, look, sound, appear, get, prove, taste.

引导词

连接词: that / whether / as if/ as though

连接代词: who(ever), whom , whose , which(ever) , what(ever)

连接副词: when(ever) / where(ever) / why / how(ever)

观察例句总结规律:

The trouble is that she has lost his money.

The question is whether we need more ice cream.

The question is what caused the accident.

The city is no longer wha t it used to be.

The problem is who could do the work.

I read about it in some book or another, but I don’t know is which it is. that 在引导表语从句时,起作用,但是成分,也没有 . whether在表语从句中表示”“但是不成分. If 不能引导表语从句. What在表语从句中充当表示 . Who 在表语从句中作 .

Which在表语从句中充当表示 . 当表语从句中主语,宾语,表语都具备,则选择连接副词, why, when, where , how

注意:引导表语从句时 that不嫩省略. If 不引导表语从句,

当主句主语为reason,或者是由why 引导的从句时,与他们相关的表语从句用引导,而不能用引导; because引导表语从句时只能用在it is/ was because……..句型中

1.The question is ________ we will have our sports meet next week.

A. that

B. if

C. when

D. whether

2.The reason why he failed is ________he was too careless.

A. because

B. that

C. for

D. because of

3. Go and get your coat. It’ s ________you left it

A. where

B. there

C. there where

D. where there

5. What I want to know is ______ he likes the gift given by us.

A. that

B. if

C. whether

D./

6. The reason is_________I missed the bus.

A. that

B. when

C. why

D. what

7. That is __ ___ we were late last time.

A. that

B. when

C. why

D. what

8. She looked _________ she were ten years younger.

A. that

B. like

C. as

D. as though

9.—I fell sick!

--I think it is _______ you are doing too much.

A. why

B. when

C. what

D. because

10. The reason why he hasn’t come is ___________.

A. because his mother is ill

B. because of his mother’s being ill

C. that his mother is ill

D. for his mother is ill

11. —He was born here.

-- That is _______ he likes the place so much.

A. that

B. what

C. why

D. how

12.That is ______ Lu Xun once lived.

A. what

B. where

C. that

D. why

1 —I drove to Zhuhai for the air show last week . —

Is that_____ you had a few days off？

A. why B .what C. when D. where

2 .I had neither a raincoat nor an umbrella ____I got wet through.

A. It’s the reason

B. That’s why

C. There’s why

D. It’s how

3. See the flags on top of the building? That was ___ we did this morning.

A. when

B. which

C. where

D. what

4. --- Are you still thinking about 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

表语从句连接副词用法

表语从句用法详解(例句丰富) 一、表语从句的引导词 引导表语从句的词有连词that, whether，连接代词和连接副词，关系代词型what，以及as if, as though, because等连词。 1. 由that引导 The fact is that he doesn’t really try. 事实是他没有做真正的努力。 The trouble is that I have lost his address. 麻烦的是我把他的地址丢了。 My suggestion is that we should tell him. 我的建议是我们应该告诉他。 His sole requirement was (is) that the system work. 他唯一的要求是这个制度能起作用。 My idea is that we should start making preparations right now. 我的意见是我们马上就开始做准备工作。 2. 由whether引导 The question is whether the film is worth seeing. 问题是这部电影是否值得看。【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。 3. 由连接代词引导 You are not who I thought you were. 你已不是我过去所想像的人。 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 who (m) we should trust. 问题是我们应当相信谁。 What I want to know is which road we should take. 我想知道的是我们应走哪条路。 4. 由连接副词引导 The problem is how we can find him. 问题是我们如何找到他。 That was when I was fifteen. 这是我15岁时发生的事。 That’s where I first met her. 那就是我第一次遇见她的地方。 That’s why he didn’t come. 这就是他没有来的缘故。 That’s why I object to the plan. 这就是我反对这个计划的原因。 That’s where you are wrong. 这就是你不对的地方。 5. 由关系代词型what引导 That’s what I want to stress. 这是我想强调的。 That’s what we are here for. 我们来这里就为了这个。 Fame and personal gain is what they’re after. 他们追求的是名利。 He is no longer what he was. 他已经不是以前的他了。 6. 由as if / as though引导 It isn’t as if you were going away for ever. 又不是你离开不回来了。

表语从句分析

一、定义： A. 表语从句就是用一个句子作为表语。说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语。 例句：The problem is when we can get a pay rise. 问题是，当我们可以得到加薪。 B. 连接表语从句的连接词有：that, what, who, when, where, which, why。例句： He has become what he wanted to be ten years ago. 他已经成为了他10年前想成为的。 She has remained where I stood yesterday for an hour. 她一直在我昨天站的地方站了一个小时。 His suggestion is that we should stay calm. 他的建议是，我们应该保持冷静。 The question is when he can arrive at the hotel. 问题是，他什么时候可以到达酒店。 二、注意： A. 表语从句一定要用陈述语序。 False: The question is when can he arrive at the hotel. Right: The question is when he can arrive at the hotel. B. 不可以用if，而用whether连接表语从句（as if 例外）； 引导宾语从句时可以互换if/whether，位于介词后要用whether； 位于句首时要用whether； 引导表语从句，主语从句，同位语从句时要用whether。 False: The question is if the enemy is marching towards us. Right: The question is whether the enemy is marching towards us. Right: It looked as if he had understood this question. C. 不像宾语从句，在有表语从句的复合句中，主句时态和从句时态可以不一致。 Right: The question is who will travel with me to Beijing tomorrow. Right: The question is why he cried yesterday. D. that在表语从句中不可以省掉。

表语从句讲解及专项练习

15级计算机班英语 表语从句讲解 概念：表语从句是在复合句中作表语的名词性从句。 放在系动词之后，一般结构是“主语+系动词+表语从句” 可以接表语从句的连系动词有be, look, remai n, seem 等。 ★The trouble is that we are short of mon ey. 困难是我们资金短缺。 ★ That is why stone walls are used in stead of fen ces around NewE ngla nd fields.这就是为什么在新英格兰用石头墙而不用栅栏的原因。 ★At that time, it seemedas if I could n't think of the right word an yhow. 当时,我似乎怎么也想不出一个恰当的字眼来。 引导表语从句的词： 从属连词that、whether、as though、as if （That引导表语从句时，在口语中，间或可以省略。） 关系代词who, what, which, whom,whose, whatever, whoever, whomever, whichever 等； 关系畐【J词when, where, why, how, however, whenever, wherever 等。 探由从属连词that , whether引导的表语从句。 that 在引导表语从句时无词义，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（问题），trouble（麻烦），problem（问题），result（结果），chance（可能性），suggestion（建议），idea（想法），reason（理由）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。 例如： ★The trouble is （that） she has lost his mon ey. 麻烦的事是他丢了钱。 ★The questi on is whether we n eed more ice cream. 问题是我们是否还需要 一些冰淇淋。 ★The problem was that it was too valuable for everyday use. 问题是它作为日常之用太贵重了。 ★What she couldn ' t understand was that fewer and fewer students showed in terest in her lesso ns. 我们不能理解越来越少的学生对他的课不感兴趣。 探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。例如： ★The questi on is which of us should go. 问题是我们哪一个应该去。 ★The problem was who could do the work. 问题是谁能做这项工作。 ★That's what he is worryi ng about. 那就是他在担心的事。 ★That's what we should do. 那是我们应该做的。 ※由关系副词引导的表语从句。 关系副词when, where, how, why 除在句子起连接作用外，在从句中还充 当时间，地点，方式或原因状语，本身具有词义。

表语从句讲解及专项练习 答案

表语从句讲解及专项练习概念：表语从句是在复合句中作表语的名词性从句。 放在系动词之后,一般结构是“主语+系动词+表语从句” 可以接表语从句的连系动词有be, look, remain, seem等。 ★ The trouble is that we are short of money.困难是我们资金短缺。 ★ That is why stone walls are used instead of fences around New England fields.这就是为什么在新英格兰用石头墙而不用栅栏的原因。 ★ At that time, it seemed as if I couldn't think of the right word anyhow.当时,我似乎怎么也想不出一个恰当的字眼来。 引导表语从句的词： 从属连词that、whether、as though、 as if（That引导表语从句时，在口语中，间或可以省略。） 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。 ※ 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，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(问题)，trouble(麻烦)，problem(问题)，result(结果)，chance(可能性)，suggestion(建议)，idea(想法)，reason(理由)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。 例如： ★ The trouble is (that) she has lost his money. 麻烦的事是他丢了钱。 ★ The question is whether we need more ice cream.问题是我们是否还需要一些冰淇淋。 ★ The problem was that it was too valuable for everyday use.问题是它作为日常之用太贵重了。 ★ What she couldn’t understand was that fewer and fewer students showed interest in her lessons. 我们不能理解越来越少的学生对他的课不感兴趣。 ※ 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。 例如： ★ The question is which of us should go.问题是我们哪一个应该去。 ★ The problem was who could do the work.问题是谁能做这项工作。

表语从句讲解及练习

表语从句 1．定义：用作表语的从句叫做表语从句。 2．引导表语从句的关联词的种类： (1)从属连词that。在从句中不做成分。如：The trouble is that I have lost his address.麻烦是 我把他的地址丢了。The reason was that he was late for school. (2)从属连词whether,as,as if。如： (3)looked just as he had looked ten years before.他看起来还与十年前一样。 (4)question is whether they will be able to help us. 问题是他们是否能帮我们。 (5)注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如： (6)All this was over twenty years ago, but it’s as if it was only yesterday. (7)这都是20多年前的事了，但宛如昨天一样。 The key is whether we can solve the problem.注：能跟表语从句的谓语动词一般为系动词be, seem, look，sound等。如： (8)He looked just as he had looked ten years before. 他看起来还与十年前一样。 It sounds as if someone is knocking at the door. 连接代词who, whom, whose, what, which, whoever, whatever, whichever 在表语从句中做主语、宾语等。如：The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。 (9)That was what she did this morning on reaching the attic. 那就是她今晨上了阁楼干的。 The problem is who we can get to replace her. (10)我想问的是谁离开了。My question is who left. 连接副词where, when, how, why。 What I wonder is when he left. 我想知道他是何时离开的。 This is where they once lived. 这就是他们曾经住过的地方。 That is why he didn't come here. The question is how he did it. (11)连词because可引导表语从句。如： (12)I think it is because you are doing too much. 我想这是因为你做得太多。 It's just because he doesn't know her. (13)T hat's because he didn't understand me. 那是因为他没有理解我.(That's because...强调原因) (14)T hat's why he got angry with me.那正是他对我生气的原因。(That's why...强调结果) (15)在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如： (16)M y suggestion is that we (should) start early tomorrow. 我的建议是我们明天一早就出发。

英语写作训练-几个重要的表语从句句型

英语写作思维拓展训练 几个重要的表语从句句型 (1) The point is that ... 重点/关键是……. 【经典例句】 1. The point is that we should send some school supplies or items to those disaster areas so as to express our little love. 关键是我们应该送一些物品或学习用品给那些灾区，来表达我们的一点爱心。 2. The point is that so many people are killed in the traffic accidents. 问题的关键是这么多人在交通事故中丧生。 【活学活用】 1.如果你要减肥最重要的是你要抵抗住吃的诱惑然后坚持锻炼。 _______________________________________________________________________________ _______________________________________________________________________________ Key: If you want to lose weight, the point is that you should resist your eating desire and keep your physical training on. 2. 关键是你得遵守诺言,帮她学习英语. _______________________________________________________________________________ _______________________________________________________________________________ The point is that you have to keep your promise to help her with her English. 3. 关键在于，新加坡的媒体业，绝对不仅仅是一笔生意，它还肩负一定的社会使命。 _______________________________________________________________________________ _______________________________________________________________________________ The point is that, in Singapore, the media sector is not mere business，it has a mission to perform for the good of society. (2) The chance is that … 有可能…… 【经典例句】 The chance is that one smoker in four will die from smoking. 每四个吸烟者当中就可能会有一个因吸烟而死亡。 The chance is that she's already heard the news. 可能她已听到那则消息了。 【活学活用】 1. 你可能会考试及格。 _______________________________________________________________________________

表语从句讲解及专项练习、答案

表语从句讲解及专项练习 概念：表语从句是在复合句中作表语的名词性从句。 放在系动词之后,一般结构是“主语+系动词+表语从句” 可以接表语从句的连系动词有be, look, remain, seem等。 ★ The trouble is that we are short of money.困难是我们资金短缺。 ★ That is why stone walls are used instead of fences around New England fields.这就是为什么在新英格兰用石头墙而不用栅栏的原因。 ★ At that time, it seemed as if I couldn't think of the right word anyhow.当时,我似乎怎么也想不出一个恰当的字眼来。 引导表语从句的词： 从属连词that、whether、as though、as if（That引导表语从句时，在口语中，间或可以省略。） 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。 ※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，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(问题)，trouble(麻烦)，problem(问题)，result(结果)，chance(可能性)，suggestion(建议)，idea(想法)，reason(理由)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。 例如： ★ The trouble is (that) she has lost his money. 麻烦的事是他丢了钱。 ★The question is whether we need more ice cream.问题是我们是否还需要一些冰淇淋。 ★The problem was that it was too valuable for everyday use.问题是它作为日常之用太贵重了。 ★What she couldn’t understand w as that fewer and fewer students showed interest in her lessons. 我们不能理解越来越少的学生对他的课不感兴趣。 ※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。 例如： ★The question is which of us should go.问题是我们哪一个应该去。 ★The problem was who could do the work.问题是谁能做这项工作。 ★That's what he is worrying about.那就是他在担心的事。

表语从句例句

1.定义 2. 引导表语的从句的关联词的种类 （1）从属连词that. The trouble is that I have lost his address. 原因是他上学迟到了。________________________________ (2)从属连词whether, as, as if He looked just as he had looked ten years before. The question is whether they will be able to help us. 注：从属连词if一般可不可以用来引导表语从句_____，as if呢____ All this was over twenty years ago, but it’s as if it was only yesterday. 关键是我们能否解决问题。________________________________ 看起来要下雨。__________________________________________ 注：能跟表语从句的谓语动词一般为系动词____ ____ _____ _____等 听起来好像有人在敲门。_____________________________________ (3) 连接代词____ _____ _____ ＿＿＿＿＿＿＿＿＿＿＿在表语从句中做主语、宾语等。 The problem is who we can get to replace her. That was what she did this morning on reaching the agreement.我的问题是谁离开了。＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ (4) 连接副词＿＿＿＿＿＿＿＿＿＿＿＿ What I wonder is when he left. This is where they once lived.

史上最标准的英语语法之表语从句

第十五节表语从句 引导表语从句的词： ●从属连词that、whether、as though、as if（That引导表语从句时，在口语中， 间或可以省略。） ●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。 1.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，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(问题)，trouble(麻烦)，problem(问题)，result(结果)，chance(可能性)，suggestion(建议)，idea(想法)，reason(理由)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。 例如：The trouble is (that) she has lost his money. 麻烦的事是他丢了钱。 The question is whether we need more ice cream.问题是我们是否还需要一些冰淇淋。 The problem was that it was too valuable for everyday use.问题是它作为日常之用太贵重了。 What she couldn’t understand was that fewer and fewer students showed interest in her lessons. 我们不能理解越来越少的学生对他的课不感兴趣。 2.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。例如：The question is which of us should go.问题是我们哪一个应该去。 The problem was who could do the work.问题是谁能做这项工作。 That's what he is worrying about.那就是他在担心的事。 That's what we should do.那是我们应该做的。 3.由关系副词引导的表语从句 关系副词when, where, how, why 除在句子起连接作用外，在从句中还充当时间，地点，方式或原因状语，本身具有词义。 例如：Go and get your coat. It's where you left it. 去把雨衣拿来。就在你原来放的地方。 I had neither a raincoat nor an umbrella. That’s why I got wet through. 我们既没伞也没雨衣，这是我们淋湿的原因。 That is how mice ruin many stores of grain every year.那就是老鼠是怎样每年损害

各类从句讲解与例句

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表语从句

语法表语从句 一、课堂导入 1. That is why stone walls are used instead of fences around New England fields. 2.That fact is that more than seventy percent of the earth’s surface is covered by water. 3. This is what I want. 4. The reason why he was late is that his bike broke down. 5. Next Sunday is when we shall meet. 6. This is why I am late. 7. My problem is which computer to choose. 知识点1 ：表语从句的概念 概念：表语从句就是用一个句子作为表语。说明主语是什么或者怎么样，由名词、形容词或相当于名词或 形容词的词或短语充当，和连系动词一起构成谓语。 如：The problem is puzzling. 这问题令人困惑 主语连系动词形容词作表语 The problem is when we can get a pay rise. 问题是什么时候我们可以得到加薪. 主语连系动词一个句子作表语（表语从句） 注意：“主语+系动词+表语从句”。 常见的连系动词有：be动词(am, is, are, was, were)、表示持续的系动词（keep, remain, stay）、感官动词feel(摸起来，感觉) , smell(闻起来) , sound(听起来) , taste(尝起来，吃起来) 等、表示变化的系动词（become, grow, turn, fall, get, go,）、表终止的系动词prove, turn out(结果是，证明是)、seem, appear（看起来...） 表语从句都用陈述句语序： E.g.: The question is when he can arrive at the hotel 这个问题是他什么时候能到达宾馆。 That is what I want to tell you. 那就是我想要对你讲的。 知识点2：表语从句的引导词 引导表语从句的连接词分为三类： （1）从属连词：that, whether, as if.(从属连词在从句中不但当成分，只起连接作用，that无词义) （2）连接代词：Who, whoever, whom, whomever, what, whatever, which, whichever, whose. (连接代词在从句中充当主、宾、表、定的成分，起连接作用，有词义) （3）连接副词：when, where, why, how等。

英语表语从句用法总结

[编辑本段] 定义 表语从句定义： A The problem is puzzling. 这个问题令人困惑 主语,连系动词,形容词作表语 The problem is when we can get a pay rise. 问题是什么时候我们可以得到加薪. 主语连系动词一个句子作表语---表语从句 B 连接表语从句的连接词有：that, what, who, when, where, which, why,whet her,how. He has become a teacher. 他已经成为一名教师。 He has become what he wanted to be ten years ago. 他已经成为了他10年前想成为的。 She has remained there for an hour. 她曾在那里停留了一个小时。 She has remained where I stood yesterday for an hour. 她一直在我昨天站的地方站了一个小时。 His suggestion is good. 他的建议是好的。 His suggestion is that we should stay calm. 他的建议是，我们应该保持冷静。 The question is confusing. 这个问题令人困惑. The question is when he can arrive at the hot el. 问题是，他什么时候可以到达酒店。 who will travel with me to Beijing tomorrow.谁与我明天将前往北京。 why he cried yesterday. 昨天他为什么哭。 how I can persuade her to join us in the party. 我怎么能说服她加入我们的派对。

表语从句

（1表语从句） 1．定义：用作表语的从句叫做表语从句。 2．构成：关联词+简单句 3．引导表语从句的关联词的种类： (1) 从属连词that。如： The trouble is that I have lost his address. 麻烦是我把他的地址丢了。 (2) 从属连词whether, as, as if。如： He looked just as he had looked ten years before. 他看起来还与十年前一样。 The question is whether they will be able to help us. 问题是他们是否能帮我们。注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如：All this was over twenty years ago, but it's as if it was only yesterday. 这都是20多年前的事了，但宛如昨天一样。 能跟表语从句的谓语动词一般为系动词be, seem, look等。如： It looked as if it was going to rain. 看起来天要下雨了。 (3)连接代词who, whom, whose, what, which, whoever, whatever, whichever 连接副词where, when, how, why。 如：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。 解释： 1．连词because可引导表语从句。如： I think it is because you are doing too much. 我想这是因为你做得太多。 2．在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如： My suggestion is that we (should) start early tomorrow. 我的建议是我们明天一早就出发。

英语表语从句用法总结

一、什么是表语（predicative） 在形式上，位于系动词(be, become, get,look,grow,turn,appear, seem 等)后的就是表语。 从含义上讲，表语是回答主语“是什么”或“怎么样”的语法成分。即是指“是”字句“是”字后面的成分。表语就是起表述作用的句子成分。它修饰主语，表语是用来说明主语的身份、性质、品性、特征和状态的。表语须和系动词一起构成句子的复合谓语。 表语常由名词、形容词、介词短语、不定式、动词的-ing形式、动词的-ed、从句来充当，它常位于连系动词（be, become, get,look,grow,turn,appear, seem等）之后。表语由名词、形容词或相当于它们的词或短语等充当，和系动词一起构成谓语。Albert Einstein was a famous professor of physics. 阿尔伯特.爱因斯坦是一位有名的物理学家。 二、不定式、动名词与分词作表语的区别 不定式和动名词作表语相当于一个名词作表语，含义是回答主语“是什么”；分词作表语相当于形容词作表语，含义是回答主语“怎么样”。1.Our plan is to keep the affair secret. 我们的计划是让这件事成为秘密。（主语和表语是相等的）2.This beautiful village remains unknown to the rest of the world. 这个美丽的村庄仍未外界所知。（主语和表语是不相等的） 三、不定式和动名词作表语的区别 不定式和动名词作表语虽都是用于回答主语“是什么”的，但二者仍

英语中表语从句的用法归纳

英语中表语从句的用法归纳 1. 表语从句概说 表语从句即在主从复合句中用作表语的从句。引导表语从句的词有连词that, whether，连接代词和连接副词以及as if, as though, because等连词： My idea is that we should do it at once 我的想法是我们应该马上做。 The question is whether he is honest. 问题是他是否诚实。 The problem is how we can find him. 问题是我们如何找到他。 That was when I was fifteen. 这是我15岁时发生的事。

That's why I can't go with you. 那就是我不能同你一起去的原因。 It isn't as if you were going away for ever. 又不是你离开不回来了。 It is because I love you too much. 那是因为我太爱你了。 2. 两点重要说明 (1) 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；because 可引导表语从句，但与之同义的since, as, for 等也不用于引导表语从句。 (2) 引导表语从句的that通常不省略，但在口语或非正式文体中有时也可省略：

The trouble is (that) he is ill. 糟糕的是他病了。 顺便说一句，引导主语从句that通常也不能省略，但若句首使用了形式主语it，真正的的主语从句位于句末时，that有时也可省略。