高考英语专项复习：主语从句讲解及练习(附答案)

1、主语从句讲解及练习主语从句一、概述：在句子中起名词作用的各种从句统称为名词性从句。根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从 句。二.主语从句主要有三类：（1）由连词 that 引导的主语从句:引导词 that 无含义,在句中不做成分,不可以省。 例如：that you will win the medal seems unlikely.你想获得奖牌看起来是不可能的。that you are so indifferent bothers me.你如此冷淡使我很烦恼。that she survived the accident is a miracle.她在

2、事故中幸免于难简直是奇迹。（2） 用连词 whether 引导的主语从句:whether 有含义(是否),在句中不做成分, 不可以省。例如：whether she is coming or not doesnt matter too much.她来不来都无关紧要。（3）用连接代词引导的主语从句(在由连接代词 who, whose, whom, which, what,whoever, whomever, whichever, whatever 引导的名词性从句中，其连接代词在句 中起名词性作用，担当一定成分).例如：what you need is more practice.你所需要的是更多

3、的训练。1what i want to know is this. 我想知道的就是这事。whatever we do is to serve the people.我们无论做什么都是为人民服务。（4）连接副词 when, where, why, how 引导的名词性从句(其连接副词有含义,在 句中作状语。)eg:where we should leave it is a problem.when they will come hasnt been made pubic.他们什么时候来还不知道。三.注意点:1.it 做形式主语,而将主语从句放在句末（尤其是当谓语较短时）。例如：that ligh

4、t travels in straight lines is known to all.光沿直线传播，这是众所周知的事。=it is known to all that light travels in straight lines.众所周知光沿直线传播。when the plane is to take off has not been announced .飞机何时起飞还没有宣布。= it has not been announced when the plane is to take off.还没有宣布飞机何时起飞。(当 what 引导的主语从句表示“的东西”时，一般不用 it 作形式主

5、语。)错:it is a book what he wants.对:what he wants is a book. 他想要的是本书。例如：has it been settled who will be sent to carry out the task ?2谁将被派去执行这项任务决定了吗 ？固定用法和译法（1） it is +名词+从句it is a fact that 事实是it is good news that 是好消息it is a question that 是个问题it is common knowledge that 是常识类似的名词还有：a pity；a wonder；a

6、good thing； no wonder； surprise 等。 例如：it is a mystery to me how it all happened.这一切是怎么发生的是个谜。it is common knowledge that the whale is not a fish.鲸鱼不是鱼，这是常识。it is no surprise that bob should have won the game.鲍勃会赢得这场比赛，这不足为奇。（2） it is +形容词+从句it is necessary that 有必要it is clear that 很清楚it is likely th

7、at 很可能it is important that 重要的是类似的形容词还有： strange; natural; obvious; true; good; wonderful; possible;unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.3例如：it is obvious that conductors and insulators are both important in industry. 很明显导体和绝缘体在工业中都很重要。it

8、 is doubtful whether she will be able to come.她是否能来令人怀疑。it was really astonishing that he refused to talk to you .他拒绝和你说话真是令人惊讶。it is essential that he should be here by the weekend .周末之前，他应该到这里是必要的。it seems obvious that we can not go on like this.很明显我们不能这样下去了。（3） it is +过去分词+从句it is said that 据说it

9、is reported that 据报道it has been proved that 已证明it must be proved that 必须指出类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.例如：it is thought that he is the best player.大家都认为他是最好的选手。it is estimated that

10、the vase is 2000 years old.据估计这个花瓶有 2000 年的历史。it is used to be thought that a new star must be due to a collision between two stars.4过去一直认为新星是由于两颗星星之间碰撞产生的。it has not been made clear when the new road is to be opened to traffic.还没弄清楚这条路将开始通车。it does not matter if i missed my train, because there is

11、another later.没有赶上这趟火车没有关系，稍晚还有一趟。it happened that i saw him yesterday.碰巧我昨天看见他了。当“及物动词 + 宾语”较短时，也可用这种结构。例如：it shocked me that peter did not tell anybody where he was.让我吃惊的是彼得没有告诉任何人他在哪里。it does not interest me whether you go or not.我对你去不去不感兴趣。2.只用 whether 不用 if 引导主语从句.填空 11. _ as much as one-fifth

12、of all timber harvested is not used.2. _ some mammals came to live in the sea is not known.3. _ we have achieved is attributed to the guidance of our parents.4. _ wealthy does not necessarily mean that a man is greedy.5. although _ happened in this developed country sounds like science fiction, it c

13、ould occur elsewhere in the world.6. _ she had forgotten to take her notebook.7. i am sure that _ she said is wrong.58. we lost our way in the forest, and _ made matters worse was that it was getting dark.9. _ some mammals came to live in the sea is not known.10. _ or not is still uncertain.8. its _

14、 hell be able to come.8. _ he is at work in the heart of the big city or at home in the quiet suburb, dicks life is tied to machines.9. _ he saw both surprised and frightened him.10. _ is a spell of warm sunshine.11. _ is a pity that he should feel so upset.12. _ a spoonful of soil can tell us so mu

15、ch about the structure and early history of the moon.13. _ you nominate will be elected.14. _ book you borrow must be returned within a week.15. _ of us gets home first starts cooking.16. _orders he gives are obeyed.填空 21. _ makes mistakes must correct them.1. it worried her a bit _ her hair was tur

16、ning grey.1. when and why he came here _ yet.1. _ is no reason for dismissing her.2. _ tom liked to eat was different from _.66. _ we go swimming every day _ us a lot of good.7. it _ bob drives badly.8. its uncertain _ the experiment is worth doing.9. _ the boy didnt take medicine made his mother an

17、gry.10. _ we cant get seems better than _ we have.11. _ you dont like him is none of my business.12._ well go camping tomorrow depends on the weather.13._is going to do the job will be decided by the party committee. 14._well finish translating the book depends on the time.15. _he wont go there is c

18、lear to all of us.16. _the house will be built will be discussed at tomorrows meeting.15. _you come or not is up to you.16. _makes mistakes must correct them.17. _team will win the match is a matter of public concern. 20._leaves the room last ought to turn off the lights.a. is not known c. the fact

19、that she was a few minutes lated. whatwhat you had expected主语从句练习题即学即用 i. 用适当的词填空,使句子意思完整。1. _ he didn t attend the meeting yesterday wasn t quite clear.2. the foreign minister said, “ it is our hope _ the two sides will work towards7peace.”3. _ team will win the match is still unknown.4. _ comes to

20、 the party will receive a present.5. _ mary has left is still a question.3. it s reported _ three people were killed in the accident and five were hurt badly.3. _ he solved the problem successfully interested all of us.4. we usually think _ we can t get seems better than what we have.5. it is a fact

21、 _ english is being accepted as an international language.6. _ is to be sent there to solve the problem hasn t been decided. ii. 下列 各句中均有一处错误,请改正。1. that the old man s son wanted to know was where the gold had been hidden.1. it is reported when china has successfully sent shenzhou vi spaceship into

22、space. 3. if he can finish his task on time is of great importance.4. whether the 2008 olympic games will be held in beijing excited the whole nation.5. after yang liwei succeeded in circling the earth, which our astronauts desire to do is walk in space.6. whatever leaves the room last ought to turn

23、 off the lights.7. why they will solve the serious problem today has not been decided.8. when will win the english competition is still a problem.9. how our spring sports meet will be held or not this week is not known yet.4. it s strange when he should have gone away without telling us. grammar8主语从

24、句学习指导寻规找矩 请观察下列句子,注意主语从句的用法。1. that the earth travels round the sun is a well-known fact.2. it is uncertain whether the artist can do it or not.2. who will act the lead in the play has not been decided yet.3. where the young man has gone is not known.4. it is not yet decided when and where the test

25、will be given.常见错误展示 下列各句均有一处错误,请改正并分析错误的原因。1. light travels faster than sound is common knowledge.2. if she s coming or not doesn t matter much.2. that the professor said is of great importance.3. where will the trees be planted has not been decided.4. no matter who breaks the rule will be punished

26、.5. when and where the meeting will be held still remain a question.6. what were your problems a year ago has now become mine.8. it was requested that everyone made a speech at the meeting.c) what part they play in d) in what part they play1. it didn t surprise us at all _ he was post to hong kong.a

27、) why b) how c) what d) that? 6. it is pretty well understood _ controls the flow of carbon dioxide in and out the atmosphere today.a) that b) that what c) what d) how96. _ we ll go camping tomorrow depends on the weather.a) if b) whether c) that d) where7. _ we ll go camping tomorrow has kept us al

28、l excited the whole day.a) if b) whether c) that d) where8. he will tell us _ he thinks of our arrangement.a) that b) what c) how d) if9. sarah hopes to become a friend of _ shares her interests.a) whoever b) whomever c) no matter who d) no matter whom e) anyone11. _ his failure lies is expected _ c

29、lear to us.a) what to make b) how madec) where to be made d) why making2. dr. smith comes from either yale or harvard i can t remember _.a) where b) there c) which d) that3. you can depend on _ promise he makes.a) anything that b) which c) whatever d) whose5. we never know _ he is. they say he is a

30、salesman.a) who b) what c) how d) which e) whoever4. the main fact(or)s in human life are five: birth, food, sleep, love and death. (onecould increase the number add breathing for instance but these five are the most obvious.) let us ask ourselves _ our lives.a) they play in what part b) they play w

31、hat part in5. i really don t see _.10a) what is the fun of playing dead b) what the fun of playing dead isc) what fun to play dead is d) what is the fun to play dead6. a look at recent trends in world fisheries reveals _ the ocean on a global scale.a) how we have swiftly affected b) that how swiftly

32、 we have affectedc) how swiftly we have affected d) however swiftly we have affected7. a little learning is not dangerous so long as you know _.a) that b) that there is a little c) it is a little d) that it is little3. the reason _ he referred to for his success is _ he always working hard. a) why,

33、that b) why, because c) that, that d) that, because8. while teaching students, teachers should take into consideration _ students develop at different rates.a) the fact that b) since c) as long as d) despite of9. meeting my uncle after all these years was an unforgettable moment, _ i will always tre

34、asure.a) that b) one c) on which d) what10. the foreign minister said, “ _ is our hope that the two sides will work towards peace. ”a) this b) there c) that d) it10. the thought worried him much _ he might fail in the exam.a) that b) which c) when d) so that10. now that energy prices are rising so r

35、apidly, further prices are very uncertain, and11the risk _ a new investment depending on them may fail is greater.a) by which b) of c) that d) in that27. there are signs _ restaurants are becoming more popular with families. a) that b) which c) in which d) of which27. there s a feeling in me _ we ll

36、 never know what a ufo i s not ever/never. a) that b) which c) of which d) what27. the theory is of great important _ the hotter a body is, the more it radiates.a) that b) when c) which d) what30. evidence came up _ specific speech sounds are recognized by babies as young as 5 months old.a) that b)

37、whose c) which d) what31. information has been put forward _ more middle school graduates will be admitted to universities.a) while b) that c) when d) as31. a story goes _ elizabeth i of england liked nothing more than being surrounded by clever and qualified noblemen at court.a) when b) where c) wh

38、at d) that32. the possibility never occurred to me _ i would unexpectedly enter such a big band and work in wall street.a) when b) that c) / d) how33.word got around _ he had resigned his position as secretary of the12committee.a) when b) after c) that d) which33. _ is no possibility _ bob can win the first prize in the match. a) there that b) it that c) there whether d)it whether34. her unusual success shows that if someone can do their job really well, then the question _ male or female is not so important.a) if they are b) of whether they