1、名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。因此，名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。（一）引导名词性从句的连接词1、连接代词：who, whose, whom, what, which。有词义，在从句中担任成分，如主语、表语、宾语、或定语等。2、连接副词：when, where, why, how。有词义，在从句中担任成分，作状语。3、连接词：that, whether, if, as if。that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在从句中不担任成分。注意：连接代词与连接副词在句中不再是疑问句，
2、因而从句中谓语不用疑问式。连接代词与连接副词在从句充当句子成分，连接词whether 和if（是否），as if（好象）在从句中不充当句子成分，只起连接作用。根据句义，如果连接代词与连接副词，whether、if 和as if都用不上时，才用that作连接词（that本身无任何含义）。（二）主语从句1、主语从句在复合句作主语。e.g. Who will go is not important.2、用it作形式主语，主语从句放在句末。e.g. It doesnt matter so much whether you will come or not.3、that引导主语从句时，不能省略。e.g.
3、 That he suddenly fell ill last week made us surprised.（三）表语从句1、表语从句在复合句中作表语，位于系动词之后。e.g. The question was who could go there.2、引导表语从句的连接词that有时可省去。e.g. My idea is (that) we can get more comrades to help in the work.（四）宾语从句1、宾语从句在复合句中作宾语。引导宾语从句的连词that一般可省略。e.g. I hope (that) everything is all right.
4、2、介词之后的宾语从句，不可用which或if连接，要分别用what或 whether。e.g. Im interested in whether youve finished the work. Im interested in what youve said.3、whether与if都可以引导宾语从句，常可互换。但下面情况不能互换。宾语从句是否定句时，只用if，不用whether。e.g. I wonder if it doesnt rain.用if 会引起误解，就要用whether。e.g. Please let me know whether you want to go.（此句如果把
5、whether改成if，容易当成条件句理解）宾语从句中的whether 与or not直接连用，就不能换成if；不直接连用，可换。e.g. I dont know whether or not the report is true.I dont know whether/ if the report is true or not.介词后的宾语从句要用whether引导。whether 可与不定式连用。whether也可引导主语从句、表语从句、同位语从句，还可引导让步状语从句，以上均不能换成if。但引导条件从句时，只能用if，而不能用whether。e.g. It depends on whet
6、her we have enough time. They dont know whether to go there. Please come to see me if you have time.（五）同位语从句同位语从句在句中作某一名词的同位语，一般位于该名词（如：news, fact, idea, suggestion, promise等）之后，说明该名词的具体内容。e.g. I have no idea when he will be back.The fact that he had not said anything surprised everybody.练习：名词性从句一、判
7、断下列各句哪句含有名词性从句，并指出是什么从句：1. China is no longer what it used to be.2. The truth that the earth turn around the sun is known to all.3. It was snowing when he arrived at the station.4. How he persuaded the manager to change the plan is interesting to us all.5. The news that they had won the game soon sp
8、read over the whole school.6. The news that you told me yesterday was really disappointing.7. That is where Lu Xun used to live.8. He spoke as if he understood what he was talking about.9. Do you remember the teacher who taught us English at middle school?10. I wonder why she refused my invitation.二
9、、用适当的连词填空：1. I cant decide _ dictionary I should buy.2. Thats _ he refused my invitation.3. I am very interested in _ he has improved his pronunciation in such a short time.4. _ we need is more time.5. The fact _ she had not said anything at the meeting surprised everybody.6. _ and _ they will meet
10、has not been decided yet.7. Please tell me _ you are waiting for.8. Is that _ you are looking for?9. Would you please tell me _ the nearest post office is?10. I dont know _ he will agree to the plan or not.三、选择填空：1. Do you see _ I mean?A. that B./C. howD. what2. Tell me_ is on your mind.A. thatB. wh
11、atC. which D. why3. We must stick to _ we have agreed on.A. whatB. thatC. /D. how4. Let me see _.A. that can I repair the radioB. whether -I can repair the radioC. I can repair the radioD. whether can I repair the radio5. Keep in mind _.A. that the teacher saidB. what did the teacher sayC. that did
12、the teacher sayD. what the teacher said6. Could you advise me _?A. which book should I read firstB. what book should I read firstC. that book 1 should read firstD. which book I should read first7. He was criticized for _.A. he had done itB. what he had done C. what had he done D. that he had done it
13、8. Would you kindly tell me _?A. how can I get to the Beijing Railway StationB. how I can get to the Beijing Railway StationC. where can I get to the Beijing Railway StationD. whether can I get to the Beijing Railway Station9. Mrs. Smith was very much impressed by _.A. what had she seen in ChinaB. t
14、hat she had seen in ChinaC. what she had seen in ChinaD. which had she seen in China10. We took it for granted _A. that they were not comingB. that were they not comingC. they were coming notD. were they not coining11. I really dont know _A. I should do nextB. what should I do nextC. what I should d
15、o nextD. how I should do next12. Im afraid _.A. the little girl will have to be operated onB. that will the little girl have to operate onC. the little girl will have to operate onD. that will the little girl have to be operated on13. She walked up to _ .A. where did I stand B. where I stood C. I st
16、ood there D. where I stood there14. Can you tell me _?A. who is that gentlemanB. that gentleman is whoC. who that gentleman isD. whom .is that gentleman15. Well give you _.A. that do you needB. what do you needC. whatever you needD. whether do you need16. They want us to know _ to help us.A. what ca
17、n they B. what they canC. how they can D. how can they17. We must put _ into practice.A. what we have learnedB. that we have learnedC. that have we learnedD. what have we learned18. Did she say anything about _?A. that the work was to be doneB. how was the work to be doneC. that was the work to be d
18、oneD. how the work was to be done19. He was never satisfied with _.A. what she had achievedB. had what she achievedC. she had achievedD. that she achieved20. These photographs will show you _.A. what does our village look likeB. what our village looks likeC. how does our village look likeD. how our
19、village looks like21. Peter insisted _ he pay the bill.A. on thatB. whatC. thatD. on which22. They urged _ the library open during the vacation. A. whenB. whereC. whyD. that23. We wish we could have learned _ when we were at high school.A. what you did B. that you had doneC. that what you did D. wha
20、t did you do24.1 will describe to you _ I saw when there.A. whatB. thatC. which D./25. From _ I should say he is a good worker.A. what 1 know of himB. that I do know of himC. what do I know of himD. that do I know of him26. I will give this dictionary to _ wants to have it.A. whomever B. anyoneC. wh
21、oeverD. someone27._ they will come here hasn t been decided yet.A. WhatB. ThatC. WhenD. Where28. _ was said here must be kept secret.A. Who B. The thingC. Whatever D. Where29. It is still a question _ we shall have our sports meet.A. ifB. thatC. whatD. when30. Im going anyway. _ she will go is up to
22、 her to decide.A. If or notB. Whether or notC. IfD. That31. It is strange _ she have left without saying a word.A. thatB. whatC. whyD. how32. It is very clear _ our policy is a correct one.A. whatB. thatC. why D. where33. _ Mr Zhang said is quite right.A. That B. WhenC. WhatD. Whether34. It has been
23、 decided _ he will be sent there.A. ifB. whether C. whyD. that35. It doesn t matter _he s come back or not.A. ifB. whetherC. thatD. when36. Its a great pity _ we wont be able to finish the task on time.A. when B. thatC. why D. where37. It happened _ I wasnt there that day.A. when B. whyC. where D. t
24、hat38._ you have done might do harm to other people.A. What B. ThatC. Which D. The things39. _ leaves the room last ought to turn oft the lights.A. Anyone B. The personC. Whoever D.Who40._ the 2000 Olympic Games wont be held in Beijing is known to all.A. Whether B. IfC. Whenever D. That 41. _ fails
25、to see this will make a big mistake.A. That B. WhoeverC. Whether D. Whether or not42. _ we need more equipment is quite obvious.A. What B. WhetherC. ThatD. Whatever43. Has it been announced _?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. wh
26、en the planes are to take off44. That is _ we all support his idea.A. whatB. whyC. whereD. when45. Thats _ we should do.A. thatB. whatC. howD. why46. _ is troubling me is _ I dont understand _ he saidA. What; that; whatB. What; what; whatC. That; that; whatD. Why; that; which47. Things were not _ th
27、ey seemed to be.A. whenB. whyC. thatD. what48. Thats _ I want to say.A. all whatB. whatC. all whichD. what that49. Thats _ .A. where our differences lieB. our differences lie thereC. where do our differences lieD. that where our differences lie50. That is _ .A. where lived he thereB. where did he li
28、veC. where he livedD. that where he lived51. The questions is _.A. whether is it worth doingB. that if it is worth doingC. whether it is worth doingD. if it is worth doing52. Water will continue to be _ it is today next in importance to oxygen.A. howB. whichC. whatD. as53. Thats_.A. how did I become
29、 a teacherB. how I became a teacherC. how a teacher I becameD. that I became a teacher54. They are just _.A. that what shall I haveB. what shall I haveC. that I shall have whatD. what I shall have55. It looked _.A. as if it was going to rainB. that as if it was going to rainC. as if was it going to
30、rainD. as if that it was going to rain56. Thats_.A. how she did itB. that how did she do it.C. how did she do itD. what she did it57. That is _ we decided to put the discussion off.A. whereB. whichC. thatD. why58. Thats _ I lived when I was ten years old.A. whereB. at whichC. there whereD. when59. M
31、y suggestion is _ we should send a few comrades to help them.A. if B. thatC. when thatD. that where60. The idea _ all people are selfish is wrong.A. whatB. thatC. why D. if61. We heard the news _ our team had won.A. thatB. whatC. whetherD. why62. The fact _ he hadnt said anything surprised us all. A
32、. whyB. ifC. thatD. whether63.I have no idea _ she will be back.A. thatB. whereC. that whenD. when64. We must keep in mind the fact _ China is still a developing country.A. whetherB. thatC. whyD. when65. They have no idea at all _.A. where he has goneB. where did he goC. where has he goneD. which pl
33、ace he has gone参考答案语法复习三：名词性从句一、1、表语从句；2、同位语从句；3、不是；4、主语从句；5、同位语从句；6、不是；7、表语从句；8、宾语从句；9、不是；10、宾语从句二、1. which; 2. why; 3. how; 4. What; 5. that; 6. when, where; 7. who(m); 8. what; 9. where; 10. whether三、15 DBABD 610 DBBCA 1115 CABCC 1620 BADAB 2125 CDAAA 2630 CCCDB 3135 ABCDB 3640 BDACD 4145 BCDBB 4650 ADBAC 5155 CCBDA 5660 ADABB 6165 ACDBA