名词性从句讲解_百度文库

1、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

2、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, why1. 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,

3、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

4、谓语动词一般用单数形式。常用句型如下:(1It + be + 名词+ that从句(2It + be + 形容词+ that从句(3It + be + 动词的过去分词+ that从句(4It + 不及物动词+ that 从句例如:(1It is a pity /a shame /no wonderthat(2Its important/necessary/strange/natural/likely/possible/probable that.(3It is reported/said/believed/suggested/proposed that(4It happened/occurre

5、d to sb.that.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. thatIt is suggested (requested, proposed, desired, etc. that2. 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

6、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、d

7、ecide、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, whic

8、hever 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。She will give whoever needs help a warm support. 凡需要帮助的人,她都会给予热情的支持。3. 用whether或if引导的宾语从句,其主语和谓语的顺序也不能颠倒,仍保持陈述句语序。此外,whether与if 在作“是否”的意思讲时在下列情况下一般只能用

9、whether,不用if: a. 引导主语从句并在句首时;b. 引导表语从句时;c . 引导从句作介词宾语时;d. 从句后有“or not”时;e. 后接动词不定式时。例如: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。Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。4. 注意宾语从句中的时态呼应,当主句动词是现在时,从句根据自身的句子情况,而使用不同时态。例如:I know (that he will

10、study English next year. (从句用一般将来时当主句动词是过去时态(could, would除外,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;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.5. 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 dont think you are here. 我们认为你

11、不在这。I dontbelieve he will do so. 我相信他不会这样做。3. 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,表语从句位于连系动词后,有时用as if引导。其基本结构为:主语+ 系动词+ that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 is why he didnt 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。需要注意的

12、,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 morning4. 同位语从句同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导,可用于同位语从句的名词有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word

13、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。同位语从句和定语从句的区别:that作为关系代词,可以引导定语从句,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,不充当句子成分,一般不能省略。试比较下面两个例句:I ha

14、d no idea that you were here.(that引导同位语从句,不能省略Have you got the idea(thatthis book gives you of life in ancient Greece?(that引导定语从句,作宾语,可以省略名词性从句专项练习100题1. His success was because of _ he had been working hard.A. thatB. the fact whichC. the fact thatD. the fact2. “Is Mary from New York City” “I don

15、9;t know _.”A. from what city does she come fromB. from what city she comeC. what city does she come fromD. what city she comes from3. _ makes mistakes must correct them.A. WhatB. ThatC. WhoeverD. Whatever4. The reason why I didn't go to Shanghai was _ a new job.A. because I gotB. because of get

16、tingC. I gotD. that I got5. It worried her a bit _ her hair was turning grey.A. whileB. thatC. ifD. for6. Henry killed the dog. I'll ask him why _.A. did he do thatB. he did thatC. he didD. he has done so7. Have you seen Henry lately My boss wants to know _.A. how he is getting alongB. how is he

17、 getting alongC. what he is getting alongD. what is he getting along8. It is generally considered unwise to give a child _ he or she wants.A. howeverB. whateverC. whicheverD. whenever9. He asked me _ with me.A. what is the troubleB. what wrong wasC. what was the matterD. what trouble it is10. I am s

18、ure _ he said is true.A. thatB. about thatC. of thatD. that what11. When and why he came here _ yet.A. is not knownB. are not knownC. has not knownD. have not bee12. I wonder how much _.A. does the watch costB. did the watch costC. the watch costedD. the watch costs13. Mary is _ someone might recogn

19、ize her.A. afraid ofB. afraid aboutC. afraid thatD. afraid for14._ is no reason for dismissing her.A. Because she was a few minutes lateB. Owing to a few minutes lateC. The fact that she was a few minutes lateD. Being a few minutes late15. They came to the conclusion _ by a computer.A. that not all

20、things can be doneB. because of not all things be doneC. being not all things can be doneD. because not all things can be done16. Why the explosion occurred was _ the laboratory attendant had been careless.A. forB. becauseC. sinceD. that17. I don't doubt _ he'll come.A. thatB. ifC. whatD. wh

21、ether18. “Why did you go to the wrong class, Mr. Wang”“Well, I forget _ I was sup posed to go to.”A. which the roomB. which roomC. what was the roomD. what room was it19. Output is now six times _ it was before liberation.A. thatB. whichC. whatD. of which20. Mary: Helen is a mere washer woman, yet s

22、he's now buying a big house.Carol: Yes. Because she's always saved _.A. what little she earnsB. how little she earnsC. for little she earnsD. with little she earns21. _ surprised me most was _ such a little boy of seven could play the violin so well.A. ThatwhatB. WhatthatC. ThatwhichD. Whatw

23、hich22. We gave him _ help we could.A. whichB. whatC. thatD. this23. She is pleased with what you have given him and _ you have told him.A. thatB. whichC. all whatD. all that24. Excuse me would you please tell me _A. when the sports meet is taken placeB. when is the sports meet going to be heldC. wh

24、en is the sports meet to beginD. when the sports meet is to take place25. Do you happen to know _A. what size shoes he wearsB. how big shoes he wearsC. what is the size of his shoesD. what number shoes are his26. This book will show you _ can be used in other contexts.A. how you have observedB. how

25、what you have observedC. that you have observedD. how that you have observed27. Where do you think _A. has he goneB. has he beenC. he's goneD. was he28. Do you know _A. how many populations there are in the worldB. how much population there is in the worldC. how many the population of the world

26、isD. what the population of the world is29. Would you go and see _ outsideA. what to take placeB. what Tom has happenedC. what is happeningD. what the matter had been30. The subject of "What is interesting is that I do not even know him." is_.A. whatB. interestingC. What is interestingD. I

27、31. _ I think he is Charles.A. Who do you think he isB. Do you think who he isC. Whom do you think he isD. Do you think who he is32. He didn't know which room _.A. they livedB. they lived inC. did they liveD. did they live in33. The little boy ate _ his mother gave him.A. thatB. whichC. whatever

28、D. no matter what34. The city is no longer _.A. what it isB. that it used to beC. which it wasD. what it used to be35. My parents used _ they had to get a new car for me.A. whichB. thatC. whatD. all what36. _ we go swimming every day _ us a lot of good.A. IfdoB. ThatdoC. IfdoesD. Thatdoes37. _ was t

29、he idea _ the wife thought ofA. WhatthatB. ThatwhatC. HowwhyD. Whyhow38. _ did he tell his wife _ he wished to doA. ThatwhatB. WhatthatC. WherewhichD. Whichwhere39. One of the men held the view _ the book said was right.A. what thatB. that whatC. that whichD. which that40. I have no idea _ or not he

30、 has finished the work.A. ifB. thatC. whetherD. which41. “Do you know _”“His father is a doctor.”A. what is his fatherB. who is his fatherC. what his father isD. who his father is42. Is this _ we met each other two years agoA. placeB. place in whichC. whereD. place which43. It _ Bob drives badly.A.

31、thinks thatB. is thought whatC. thought thatD. is thought that44. We all know the truth _ there are air, water and sunlight there are living things.A. whereB. whereverC. thatD. that wherever45. They discussed _ they could settle the problem without others' help.A. ifB. thatC. whatD. whether46. S

32、he asked _.A. what I was doing when she rang me upB. what was I doing when she rang me upC. when she rang me up what I was doingD. when did she ring me up what I was doing47. May I borrow the ringYou can take _ you like.A. no matter what B. which C. whichever D. that 48. He said that he was fond of

33、_. A. what beautiful is B. what is beautiful C. beautiful is what D. what it is beautiful 49. He insisted that he _ in good health and _ to work there. A. was, be sent B. is, is sent C. be, was sent D. be, send 50. Do you know _ he expects will give us a talk A. who B. whom C. that D. whose 51. It&#

34、39;s uncertain _ the experiment is worth doing. A. if B. that C. whether D. how 52. They would have fixed the telephone yesterday _ it was a holiday. A. except B. except for C. except that D. but for 53. _ is to do good all one's life and never do anything bad. A. Whichever is hard B. No matter

35、what is hard C. What is hard D. All what is hard 54. _ the boy didn't take medicine made his mother angry. A. That B. What C. How D. Which 55. As the day was fine, I made the suggestion _ for a walk in the park. A. we go B. we will go C. should we go D. that we go 56. _ we can't get seems be

36、tter than _ we have. A. What, what B. What, that C. That, that D. That, what 57. _ you don't like him is none of my business. A. What B. Who C. That D. Whether 58. You can't imagine _ when they received these nice Christmas presents. A. how they were excited B. how excited they were C. how e

37、xcited were they D. they were how excited 59. _ we'll go camping tomorrow depends on the weather. A. If B. Whether C. That D. Where 60. _he really means is _he disagrees with us. A. What that B. That what C. Why that D. If what 61. _is going to do the job will be decided by the Party committee.

38、A. That B. Why C. How D. Who 62. _ we'll finish translating the book depends on the time. A. When B. Why C. What D. That 63. _ the house will be built will be discussed at tomorrow's meeting. A. If B. Where C. That D. What 64. _ he won't go there is clear to all of us. A. How B. What C.

39、Why D. This 65. _ you come or not is up to you. A. What B. If C. Why D. Whether 66. _ makes mistakes must correct them. A. Who B. Anyone C. Whoever D. Anybody 67. _ team will win the match is a matter of public concern. A. Which B. That C. If D. How 68.Three days later, word came _our country had se

40、nt up another man-made satellite. A. which B. when C. that D. where 69.The problem is _will go to the meeting. A. why B. when C. what D. who 70.It looks _ it were going to rain. A. even if B. as if C. even though D. like 71.That is _ he likes the place so much. A. that B. what C. why D. how 72.That

41、is _ Lu Xun once lived. A. what B. where C. that D. why 73. We thought _ strange that Tom did not come yesterday. A. that B. it C. this D. what 74.The fact _ she had not said anything surprised all of us. A. which B. what C. that D. how 75.What I'm considering now _ the money we need. A. is B. a

42、re C. were D. was 76.Can you tell me _ A. who is that gentleman B. that gentleman is who C. who that gentleman is D. whom is that gentleman 77. _leaves the room last ought to turn off the lights. A. Anyone B. The person C. Whoever D. Who 78. It is well known _ a person eats causes changes in the bod

43、y. A. that what, when, and how B. that C. what D. how 79. The energy is _ makes the cells able to do their work. A. that B. which C. what D. such 80. Jack was soon told _ he did was not necessary. A. why B. that C. how D. why what 81. We should think carefully about _ Mr. Needham said at the meeting

44、. A. that B. what C. which D. X 82. Can you point out _ two radios are the best A. which B. what C. that D. whether 83. You will easily know _ video recorders (录相机 are the same. A. what those B. that of those C. that all of D. which of those 84. _ you have seen things like these before doesn't m

45、atter. A. If B. Whether C. What D. When 85. I asked her in English _ she was, and she told me _ she was an actress. A. whothat B. whoX C. whatX D. howthat 86. She took it for granted _ I'd be back home an hour ago. A. that B. whether C. if D. when 87. We think it possible _ the local government

46、will be able to solve the housing problem. A. for B. that C. when D. how 88. Now there is a danger _ the ground may fall in (沉下 under the heavy traffic. A. whether B. if C. X D. that 89. At that time I had no idea _ I could hand it to him without being seen. A. if B. how C. which D. that how 90. Las

47、t Sunday he promised _ today, but he hasn't appeared yet. A. that he would come B. that he will come C. he will come to see me D. whether he would come 91. Last Sunday he made a promise _ he was free he would take me to Qingdao. A. if B. that C. that if D. whether 92. Do you have any idea _ A. whe