必修三Unit同位语从句
必修三Unit同位语从句
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必修三Unit5 Noun clauses as the appositive
同位语：对句子中某一成分作进一步解释、说明，与前面名词在语法上处于同等地位的句子成分叫做。（名词、代词、数词和从句）
Are you three ready to start out?
They each can get a chance to travel by air.
We have two foreign teachers, a Canadian and a American.
The news that we’re having a holiday tomorrow is true.
同位语从句：跟在名词后，进一步说明该名词的具体内容，作同位语的从句。
它通常跟在某些名词之后，如：advice, decision, fact, hope, idea,
information, message, news, promise, proposal, reply, report,
suggestion, word（消息），problem，question, doubt, thought等。
They were delighted at the news that their team had won.
Where did you get the idea that I could not come？
有时同位语从句可以不紧跟在被说明的名词后面，而被别的词隔开。
The thought came to him that Tom might have returned the book.
同为从句的连接词：
①that引导同位语从句时无词义，也不充当任何成分，但通常不可以省略。
He hasn’t made the decision whether he will go there.
The news that Mr. Li will be our new English teacher is true.
② whether引导同位语从句时意为“是否”，通常不能用if来代替。
The question who should do the work is being discussed at the meeting.
I have no idea what the boy is doing in the next room now.
③连接代词who, what等可以引导同位语从句。
I have no idea how I can get to the railway station.
I have no idea when he will be back．
④连接副词where, how, when等可以引导同位语从句
注意：表示建议、命令、要求等的名词（如suggestion, proposal, advice, order, request等）后跟同位语从句时，从句使用虚拟语气，通常用should+动词原形，should可以省略。
It’s my request that the work (should) be finished before 4 o’clouk.
同位语从句和定语从句的区别：
①意义不同：同位语从句用来对前面的名词起补充解释作用，二者同位关系；而定语从句是用
来说明先行词的性质或特征，起修饰和限定的作用。
1. The news that our team has won the final match is encouraging.
2. The news that you told us is really encouraging.
② that的功能不同：that引导同位语从句时是一个纯连词，不充当任何成分；而引导定语从句时，
不仅起连接作用，而且还指代先行词并在从句中充当主语、宾语等成分。
1. Dad made a promise that he would buy me a CD player if I passed the English test.
2. Dad made a promise that excited all his children.
③that引导同位语从句时是一个纯连词，故不能用which替换；而that引导定语从句时是
代词，常可以和另一关系代词which替换。
1. The fact that he is from Canada is new to me.
2. The fact that surprised me is that he is not Chinese.
④引导同位语从句的关联词，除that外，还可以根据句义使用任何其它疑问代词或副词；
而定语从句不可用what, how, whether等引导。
1.I had no idea at all what I should do next.
2. There is no proof whether he was killed by others.
⑤当when, why, where和how等引导的同位从句时，它们为连接副词，虽然在句子中充当成分，
但前面没有与其意义相同的先行词；而在定语从句中它们有关系副词，在其前面分别有表示时间，原因，地点和方式意义的名词作先行词。
1. Then arose the question where we were to get so many chairs needed.
2. That’s the reason why he didn’t come to the meeting.
一.同位语从句注意点
同位语从句定语从句
引导词that只起连接的作用不充当句子成分引导词that除了引导句子外还充当一定的句子成分
同位语从句与前面的名词是同位关系表示这个名词的内容定语从句对先行词起修饰作用，
表示“…的”。
同位语从句的that 一般不能省而定语从句中的关系代词that，
当其在从句中做宾语时，常省略
I. 说出下列从句的功能：A: Appositive（同位语）; B: Attributive（定语）
1.His proposal that we go there on foot is acceptable.
2.Many teachers hold the view that teenagers should not spend too much time online.
3.The first request that he made was to ask for freedom.
4. Do you have any idea where we will be sent?
5. Is this the company where your father works?
6. This is the reason that he gave for his absence.
7. He made an excuse that his car broke down on the way.
II 习题巩固：
1. The news ____ another power station will be built cheered all the villagers.
A which
B that
C what
D whatever
2 The news ____ he told us is exciting. Which of the following is wrong?
A what
B \
C which
D that
3.They expressed the hope ___they would come over to China.
A. which
B. that
C. whom
D. when
4.The fact___ he didn’t see Tom yesterday is true.
A. that
B. which
C. when
D. what
5.I have no idea ____he will come back.
A. where
B. when
C. what
D. that
6.The news _____ surprised everybody yesterday now proves to be false.
A. that
B. when
C. what
D. how
7.One of the men held the view ___ the book said was right.
A. what that
B. that which
C. that what
D. which that
8.Word has come _____ some American guests will come for a visit to our college next week.
A. what
B. whether
C. that
D. which
what 与that 在引导主语从句时的区别
what 引导主语从句时在句时在从句中充当句子成分，如主语、宾语、表语，而that 则不然。What引导的主语从句一般不可改为含形式主语的句子。
1) What you said yesterday is right.
It is right what you said yesterday. （）
2) That she is still alive is certain.
It is certain that she is still alive. （）
习题巩固：
1. I wonder if this is ______you are looking for.
2. Our school is quite different from _______ it was before.
3. Father made a promise ______ if I passed the examination he would buy me a computer.
4._______ I can’t understand is why he has changed his mind.
5.___________ the earth is round is known to us all.
注意：连词THAT在从句中不作成分，不含有疑问意义，而WHA T在从句中作成分，常含有疑问意义。
练习：
I．请用适当的词填空，使下列句子意思完整。
1. They expressed the hope _______ they would come over to China soon.
2. The fact _______ he didn’t see Tom this morning is true.
3. Word has come _______ some American guests will come to our college for a visit next week.
4. He can’t answer the question _______ he got the money from his home yesterday.
5. Do you have any idea _______ is actually going on in the classroom?
6. The problem _______ we should have the meeting in the hall now must be decided at once.
II. 下列各句中均有一处错误，请改正。
1. Our team has won the game, that made us very happy.
2. I’ve come with a message from Mr. Wang how he won’t be able to see you this afternoon.
3. He must answer the question if he agrees with what she said or not.
4. I’ve read the book where you gave me the day before yesterday.
5. One of the men held the pinion when what the book said was right.
III．高考单选
1．A warm thought suddenly came to me _____ I might use the pocket money to buy some flowers for my mother’s birthday．
A. if
B. when
C. that
D. which
2．—It’s th irty years since we last met.
—But I still remember the story, believe it or not, _____ we got lost on a rainy night.
A. which
B. that
C. what
D. when
3．Do you have any idea _____ is actually going on in the classroom?
A. that
B. what
C. as
D. which
5. The fact ____ she works hard is well known to us all.
A. that
B.what
C.why
D.which
6 The fact ____ he was successful proves his ability.
A. that
B.what
C.which
D.why
7 The news ____ he was kidnapped surprised us greatly.
A.what
B.that
C.why
D.when
8 His suggestion ____ the meeting be delayed was turned down.
A.which
B.that
C./
D.it
9 I have no idea ____ he will start.
A.when
B.that
C.what
D./
10 I've come from the government with a message ____ the meeting won't be held tomorrow.
A.if
B.that
C.whether
D.which
11 He thought ____ he might fail in the exam worried him.
A.when
B.which
C.what
D.that
12 The order ____ the prisoner be set free arrived too late.
A.which
B.whether
C.that
D.what
13 The nurses are trying their best to reduce the patient's fear ____ he would die of the disease.
A.that
B.as
C.of which
D.which
14 He often asked me the question ____ the work was worth doing.
A.whether
B.where
C.that
D.when
15 Along with the letter was his promise ____ he would visit me this coming Christmas.
A. which
B. that
C. what
D. whether
16 The other day, my brother drove his car down the street at ____ I thought was a dangerous speed.
A. as
B. which
C. what
D. that
17 Luckily, we’d brought a road map without ____ we would have lost our way.
A. it
B. that
C. this
D. which
18. Does ____matter much ____he can’t come to the meeting.
A. it, if
B. that, if
C. it, whether
D. this, whether
19--What are you anxious about?-- ____
A. How can we succeed
B. Whether we can succeed
C. When can we succeed
D. That we can succeed
20 The reason ____the little actress has been such a success is ____she is both clever and hard-working.
A. why, why
B. why, that
C. that, because
D. for, because
21 __leaves the room last ought to turn off the lights.
A. Who
B. Whoever
C. Anyone
D. The person
22 I really don’t know _____I had this photo taken.
A. where it was that
B. it was that
C. where it was
D. it was why
24--What do you think of China?
--____different life is today from ____it used to be.
A. How, what
B. What, what
C. How, that
D. What, that
25 Give this to ____you think can do the work well.
A. who
B. whom
C. whoever
D. whomever
26.____troubles me is ____I can’t learn all these English idioms by heart.
A. That, that
B. What, what
C. That, what
D. What, that
27.The fact ____ she works hard is well known to us all.
A.that
B.what
C.why
D.which
1. You are saying that everyone should be equal, and this is _____ I disagree. [2004
全国卷I]
A. why
B. where
C. what
D. how
2. The road is covered with snow. I can’t understand _____ they insist on going by motorbike. [2004全
国卷IV]
A. why
B. whether
C. when
D. how
3. A modern city has been set up in _____ was a wasteland ten years ago. [天津2004]
A. what
B. which
C. that
D. where
4. After Yang Liwei succeeded in circling the earth, _____ our astronauts desire to do is walk in space. [上海2004]
A. where
B. what
C. that
D. how
5. Along with the letter was his promise _____ he would visit me this coming Christmas. [上海2004春]
A. which
B. that
C. what
D. whether
6. A story goes _____ Elizabeth I of England liked nothing more than being surrounded by clever and qualified noblemen at court. [上海2004]
A. when
B. where
C. what
D. that
7. I think Father would like to know _____ I’ve been up to so far, so I decide to send him a quick note.
[湖南2004]
A. which
B. why
C. what
D. how
8. The Foreign Minister said, “______ our hope that the two sides will work towards peace.” [北京2004]
A. This is
B. There is
C. That is
D. It is
9. We cannot figure out ______ quite a number of insects, birds, and animals are dying out.
A. that
B. as
C. why
D. when
10. I have always been honest and straightforward, and it doesn’t matter _____ I’m talking to. [广
东2004]
A. who is it
B. who it is
C. it is who
D. it is whom
Key:
1中that引导同位语从句，说明“news”的内容：我们队取得了决赛胜利。
2中that引导定语从句，对“news”加以限定：是你告诉我们的，而非来自其他渠道。
1中that引导同位语从句，其中that无词义，也不充当任何成分；
2中that引导定语从句，that指代promise，又在从句中充当主语，且that可以用which替换。1．（that不可换为which）
2．（第一个that可换为which，第二个不行，因为它引导的是表语从句。）
BA BABACC
What what THAT what THAT
I. 1. that 2. that 3. that 4. how 5. what
6. whether
II. 1 that→which 2. how→that 3. if→whether
4. where→that / which或省略where
5. when→that
6. that→how
（注意：斜体部分为最佳选项。下同）
[点拨] that引导的同位语从句解释说明thought的内容。
[点拨] that引导的同位语从句解释说明story的内容。believe it or not为插入语。
[点拨] 考查what引导的同位语从句，what在从句中作主语。
Keys: 1-5 AABBA 6-10 BDCAA
答案:1. B 2. B 3. D
B. 1—5 ABBB 6—10 AACD 11.A
1. B。考查表语从句。disagree是不及物动词，从句中不缺宾语，故首先可排除C；由句意“这就是我不同意的地方。”可知应选B。
2. A。考查宾语从句。由句意“路上都是雪，我不明白他们为什么还坚持要骑摩托车去。”可知应选A。
3. A。考查宾语从句。宾语从句在句中作介词in 的宾语，从句中缺少主语。而在名词性从句中what可作主语、宾语、表语等；which多作定语；that一般不充当成分；where作状语或表语，故选A。
4. B。考查主语从句。从句中动词do缺少宾语，故选what，what引导的从句在句中作主语。
5. B。考查同位语从句。that引导的从句是promise的同位语，说明其内容。
6. D。考查同位语从句。空格后的句子成分完整，说明的是a story的内容，故用that来引导，作a story的同位语。因同位语从句较长，放在了谓语之后，避免句子显得头重脚轻。
7. C。考查宾语从句。be up to sth.意为“干某事”，故应用what来引导宾语从句，且what在从句中作介词to的宾语。
8. D。此句为it 放在句首作形式主语，真正的主语是that 引导的从句。
9. C。考查宾语从句。figure out为及物动词短语，故其后跟的是宾语从句；由从句意思可知引导词在句中作原因状语，故选why。
10. B。此句中it 放在句首作形式主语，真正的主语是who 引导的从句。名词性从句要用陈述语序，故选B。
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。
高中英语宾语从句+表语从句练习
宾语从句专项练习 一、选择填空： ( ) 1. It's so dark. I can't find out ______ it's a boy ______ a girl. A. if, and B. that, and C. either, or D. whether, or ( ) 2. Could you tell me if he ______ to Shanghai? A. has gone B. had gone C. went D. go ( ) 3. He told me ______ she would catch the early bus. A. which B. whether C. why D. that ( ) 4. Mrs. Green asked me ______ I would go with her. A. what B. which C. why D. that ( ) 5. I don't know ______ the coat _____ cheap enough. A. if, is B. where,were C. that ,was D. if, were ( ) 6. Call you tell me why ______ yesterday? A. you didn't come B. did you not come C. didn't you come D. you don't come ( ) 7. He said that they ______ Yunnan. A. have been to B. had gone to C. have gone to D. has gone to ( ) 8. Jack isn't sure _____ students there are in his class. A. how many B. what C. which D. whether ( ) 9. Can you tell me ______ yesterday? A. what they do B. what they did C. what do they do D. what did they do ( ) 10. I want to know ______ his homework yesterday evening. A. if he finished B. whether he had finished C. had she finished D. has she finished ( ) 11. Do you know what ______ this time yesterday? A. they are doing B. are they doing C. they were doing D. were they doing ( ) 12. Excuse me, can you tell me _____ ？ A. why was the train late B. why the train was late C. why is the train late D. why the train is late ( ) 13. Do you know where _______ ? Someone is looking for him. A. he is B. he was C. is he D. was he ( ) 14. He wanted to know how long ______ in hospital. A. she is staying B. she had stayed C. did she stay D. she stay ( ) 15. My brother said he ______ going _______ his friend the next day. A. was, to meet B. would go, has C. will go, was going to D. will go, will ( ) 16. He told me that he ______ to London the next day. A. would go B. go C. went D. has gone ( ) 17. He said that light _____ much faster than sound. A. traveled B. will travel C. travels D. is traveling ( ) 18. Our teacher said that the moon ______ around the earth.
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。
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.
三大类从句的引导词
引导主语从句连词有that,whether,who,what,whatever等 定义:如果一个句子在复合句中充当一个主语,那么这个句子就是主语从句. 第一部分：常规主语从句，即句子在复合句中充当一个主语 （1）That he finished writing the composition in such a short time surprised me. （2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor has't been decided yet. （4） Whom we must study for is a question of great importance.（5）What caused the accident remains unknown. （6）Whatever you did is right. （7）Whose watch was lost is unknown. （8）What we need is time. （9）What we need are good doctors. 小结: （1)引导主语从句连词有that,whether,who,what,whatever等
（2)连词位于句首不能省略 （3)主语从句大多数情况下视为单三,但也有例外,如例9 第二部分：为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末 （1）It is certain that he will win the match. （2）It is true that he has made a very important discovery in chemistry. （3）It is very likely that they will hold a meeting. （4）It is strange that he should do that. （5）It is important that we all should attend the meeting.（6）It is strange that the man should have stuck to his silly ideas. （7）It is a pity that we won't be able to go to the south to spend our vacation. （8）It is still a mystery what caused the accident. （9）It is said that he has gone to Taiwan.(=He is said to have gone to Taiwan)
表语从句详解
表语从句详解 一、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. 可以接表语从句的系动词有: 1.be(being,been,am,is,are,was,were) 2. feel , seem , look, appear ,sound, taste , smell 3. stand , lie , remain ,keep, stay 4. become ,get , grow , turn ,go ,come, run, fall 5. prove, turn out 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.
表语从句引导词
表语从句引导词 The latest revision on November 22, 2020
表语从句 连接词：that / whether /as if /as though 连接代词：who / whom / whose / which / what 连接副词：when / where / why / how / because 1) that 在从句中仅起连接作用，无实际意义，在句中不做任何成分，不能省略。 2) whether在表语从句中表是否但不充当句子的成分。if 不能引导表语从句.如: 1. What the doctor really doubts is whethe r my mother will recover from the serious disease soon. 2. The question is whether it is worth doing. 3) What在表语从句中充当主语宾语表语，表示什么，什么样子，…的人或事. 1. The question is what caused the accident. 2. That mountain is no longer what it used to be . 3. What he told you was what had been discussed at the meeting. 4) who 在表语从句中充当主语，宾语，表语，表示谁。. 1.The problem is who could do the work 2. My trouble is who (whom) I can turn to. 5) which 在引导表语从句时,常充当定语，表语表示哪一个，哪一些。如： I read about it in some book or another, but what I don’t know is which (book) it is. 6) 由as if, as though引导表语从句，表示好像。句子中的系动词常用be, look, appear, seem, sound等。 1. It looks as if it was doing to rain. 2. The young man with long hair looks as if he were a girl. 7) 当主句的主语为reason,或者是由why引导的从句时,与它们相关的表语从 句用that来引导,而不能由because引导；because 引导表语从句时只能用于It/That/This is /was because…句型中. 1. The reason why I was late was that I missed the train. 2. I was late. It/That/This was because I missed the train. 注意：当表语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有why, when, where, how等 This is how he did it. That is why the brothers wanted to make a bet. That’s why we’ve given you the letter. 表语从句引导词注意事项 1. that引导表语从句时不能省. 2. if不能引导表语从句. 3. 除that外的所有引导词都有自己的意义。 4. 除that, whether外的所有引导词都须在从句中充当相应的成分
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。
表语从句的使用原则
表语从句的使用原则 认真观察下列句子，总结标语从句使用的规则 What the police want to know is when you entered the room. 警察想知道的是你什么时候进的房间。 The trouble is that we are short of funds. 困难是我们缺乏资金。 This is what we should do. 这是我们应当做的。 That’s why I want we you to work there. 那就是我要你在那儿工作的原因。 His first question was whether Mr. Smith had arrive 他的第一个问题是史密斯先生到了没有。 She seems as if she had done a great thing. 她看起来好像做了一件大事。 It is because you eat too much. 那是因为你吃的太多了。 My suggestion is that we （should）start early tomorrow. 我的建议是我们明天一早就出发。 规则： 1）连接代词what，which，who，whom，whose，除在句子中起连接作用外，还可在从句中充当主语、表语、定语。表语从句的引导词不能省略。 2）连接副词where，when，why，how除在句中起连接作用外，在从句中还充当时间、地点、方式、原因状语，本身具有词意。 3）As if，as though,just as,because也可用来引导表语从句，引导词不能省略。Because引导表语从句通常只用于This/That/it is because...结构中。As if /though引导表语从句，常置于连系动词look，seem，sound，be，become等后面，常用虚拟语气，表示不存在的动作或状态。4）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+动词原形形式，should可省略。
高中英语语法表语从句详解素材
定义 表语从句定义：在一个复合句中，从句作的是主语的表语成分。 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,whether,how.whoever，whomever，whichever ，whatever等 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 hotel. 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。 Whether the enemy is marching towards us. 是否敌人正向我们行进. 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
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 unde rstand 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。
名词性从句的用法之表语从句
名词性从句 从句有名词性从句、定语从句和状语从句三大类。 名词性从句又可分为宾语从句、表语从句、主语从句及同位语从句，因为从句的在这个句子中的功用相当于名词； 定语从句有称为形容词性从句，因为从句功能相当于形容词； 而状语从句则称为副词性从句，因为从句功能相当于副词。 什么是名词性从句? 在英语的句子结构中，本来该由名词充当的主语、宾语、表语和同位语，由一个句子来充当,这个句子就叫名词性从句。 宾语从句( The Object Clause) 表语从句( The Predicative Clause) 主语从句( The Subject Clause) 同位语从句( The Appositive Clause) 表语从句 一．定义 在句中充当表语的从句(即放在be动词后面)叫做表语从句。 二．构成 一般结构是“主语＋关联词＋表语从句”。 Our purpose is that he can realize his faults. 我们的目的是他能认识到错误。 注意：引导表语从句的连接词一般不省略。
问题是它是否值得做。 注意：表语从句表示“是否” 只用“whether” 而不用“if”。 三．引导表语从句的关联词的种类 1. 可接表语从句的连系动词有be，look，seem，sound，appear等。 China is no longer what she used to be. 今日的中国不再是过去的中国了。 At that time，it seemed as if I couldn't think of the right word. 当时，我似乎怎么也想不出一个恰当的字眼来。 2. 从属连词whether，as，as if / though引导的表语从句。 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. 听起来好像有人在敲门。 3. because，why引导的表语从句。 That's because he didn't understand me. 那是因为他没有理解我。（That's because…强调原因） That'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） 注意：what引导的主语从句表示结果或名词reason作主语时，后面的表语从句表示原因时要用that引导，不宜用because. The reason why I was sad was that he didn't understand me. 我难过的原因是他没有理解我。
(完整版)高中英语名词性从句专项练习
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, wh- ever 名词性从句连接词的选用 一、that 和what的选用： that 和what都可引导所有的名词从句。但是，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。而that在名词性从句中不充当任何成分，只起连接作用。 二、if 和whether 的选用 不能使用if 的情况： a. 主语从句句首 b. 表语从句，同位语从句 c. if引起歧义 d. 介词后的宾语从句 e. 与to do连用 f .whether or not 连在一起引导宾语从句时不用if 三、其它连接代词和副词的连用 主要根据名词性从句中的具体意义,正确的选择who、which、when、where、why、how 等连接词，这些连接词既具有疑问含义，又起连接作用，同时在从句中充当各种成分。 四、引导词that 的省略 that 可省略的情况：单个宾语从句中的that可省略 that不可省略的情况：a.主语从句b.表语从句c.同位语从句d.用it做形式宾语的宾语从句e.并列的宾语从句中，后几个从句的引导词that 不能省略 五、同位语从句的引导和辨别 1.同位语从句的格式：n.+ 连接词+ 从句 2.能接同位语从句的名词有：fact、idea, news, information, order, belief, suggestion, advice等. 3.连接词通常是that,也可根据含义选用whether, what, when, where 等来引导同位语从句. 4.中心词是“意见、建议、命令”从句要用虚拟（should）do 六、同位语从句和定语从句的区别 1.定语从句是先行词的修饰语。从句中that充当成分，做宾语时可省略。 2.同位语从句表明中心词的具体内容。that 在同位语从句中不做任何成分,只起连接作用,无具体含义,且不可省略. 判断从句类型 七、宾语从句的时态呼应 1. 如果主句时态是现在时或将来时,从句谓语可根据句意需要而选用任一种时态. 2. 如果主句时态是过去式，从句要改成相应的过去式 八、it做形式主语 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
连词because用法详解
连词?b ecause用法详解 1.表示原因，语气较强，可用来回答?why 提出的问题。如： A：W hy do you love her? 你为什么爱她?? B：B ecause she is kind. 因为很善良。 2.because 除经常用于引导原因状语从句外，还可引出表语从句或用于强调句等。如： It is because you’re eating too much. 那是因为你吃得太多了。 It was because I wanted to buy a dictionary that I went to town yesterday. 我昨天是由于想买本字典而进城的。 3.汉语说“因为……所以……”，但英语却不能用?because…s o…这样的结构。如： 因为我病了半年，所以把工作丢了。 误：?B ecause I was ill for six months, so I lost my job. 正：?B ecause I was ill for six months, I lost my job. 正：?I was ill for six months, so I lost my job. 4.汉语说“之所以……是因为……”，英语可以类似以下这样的句型（用?t hat比用?because普通）。如： The reason (w hy)I’m late is that [b ecause]I missed the bus. 我迟到的原因是因为我没有赶上公共汽车。 传统语法认为这类句型不能用?because, 但在现代英语中用?b ecause 的情形已很普遍。