爱华网一.概念
名词性从句共有四种:主语从句,表语从句,宾语从句和同位语从句
二.相关知识点精讲
1．主语从句：主语从句在整个句子中作主语。
(1)不同于其它的连词，它不充当句子的成分，只是单纯的连接词，通常不可以省略。分句置于句首时，that绝对不可以省略。
That the driver could not control his war wasobvious.
It was obvious that the driver could not controlhis car.
(2)if 不能用在主语从句中，而是用whether
Whether he left (or not) is unknown
(3)当主语从句作主语时，谓语动词一般用第三人称单数，下面这个句型例外。
What we need is more time and money.
What we need are many more books.
2.表语从句：表语从句出现在系动词后，充当表语。
The trouble is that we are short ofmoney.
Go and get your coat.It’s where you left it.
(1)引导表语从句除了上述三类词外还有because, as if/ as though等等
The reason (why/forwhich…..) is that ……
It/This/That isbecause……
(2)连系动词“appear, look,seem”的两个常用句型
It seems/appears that….
It looks/seems as if/asthough……(与事实相符用陈述语气，与事实相反用虚拟语气)
(3)as 也可以引导表语从句
Things are not alwaysas they seem to be
3. 宾语从句：及物动词，形容词和介词后加宾语从句作其宾语。
(1)宾语从句时态与主句相呼应，但宾语从句表示的是客观真理或普遍现象除外
The teacher told us that the earth moves aroundthe sun
(2)连词whether和 if可以互换，但注意下列情况
连词后紧跟or not时用whether
I want to know whether or not they willcome.
作介词宾语是用whether引导宾语从句
He was interested in whether he saw herthere.
连接词后直接加不定式，不能用if只能用whether
He doesn’t know whether to stay or not.
如果宾语从句是否定时，一般用if引导
I care if he will not attend themeeting.
(3)当宾语从句后带宾补时，要用“主语+谓语+it+宾补+that-clause,that不可省略
I think it certain that she will do well in herexam.
(4)当主语是I, we ，主句用think, believe, suppose, expect,imagine五个动词时，用否定转移
I don’t think he will win the game, willhe?
(5)that在宾语从句常可以省略，但由and或 but连接两个或多个宾语从句时，仅可以省略第一个连词that
He said (that) he had eaten nothing but that hewasn’t hungry.
(6)注意区别if引导的宾语从句和条件状语从句
I don’t know if he will come.
If he comes, I’ll let you know.
4.同位语从句，在句中作某些名词的同位语，对前面的名词进一步说明。用在下列名词fact,news,idea,hope,believe,hope,thought,doubt.truth,order,suggestion,word etc.
(1)There is no doubt that he willcome.
There is doubt whether he will come.
Word came that Napoleon would come to inspectthem.
There is no possibility that….
(2)that引导的同位语从句与定语从句的区别：
在同位语从句中：that不可以省略，不作成分;定语从句的关系代词that在定语从句作成分，作宾语时可以省略
We are interested in the news that some foreignerswould visit our school.
We are interested in the news that he toldus.
when, where引导的同位语从句与定语从句的区别：
在定语从句中，when,where前有分别表示时间、地点的先行词；而在同位语从句中无此对应关系
They have no idea at all where he hasgone.(同位语从句)
Go and get your coat. It’s in the place where youleft it.(定语从句)
5. 疑问词-ever既可以引导名词性从句，也可以引导让步状语从句，而nomatter+疑问词只能引导让步状语从句
No matter where I go, my heart is towardsChina.
I believer whatever he says.Whatever he says, I will never believe him.
who与 whoever的区别
who是“谁”的意思，表示具有疑问，who相当于anyone who“无论谁”
Whoever leaves the room last ought to turn off thelights.
Can you tell me who that gentleman is?
6．当名词性从句缺少主语、宾语或表语时，引导词通常用what，它相当于。另外，有时具有感叹意义all that, anything that或 the thing(s) that
What we can’t get seems better than what wehave.
Tom thought what a beautiful girl Marywas.
7.注意区分it 作形式主语的主语从句与强调句
强调句句型It is/was+被强调部分+that, 去掉It is/was, that，句子仍然成立。
It is natural that they should have differentviews. 主语从句
It is only lately that he had had a familyhimself. 强调句
What was it that he wanted? Idon’t know what it was that he wanted.
It was in the hotel where he stayed that wediscussed the serious problem
8.注意it 作形式主语的主语从句和as引导非限制性定语从句引导的不同
It is known to all that the earth isround.
As is known to all. the earth is round.
三.巩固练习
1．____he does has nothing to do withme.
A.whateverB.No matter what C.ThatD.If
2. The manager came overand asked the customer how____
A.did the quarrel came aboutB.the quarrel had come about
C.had the quarrel come aboutD.had the quarrel come about
3. Energy is ____makesthing work..
A.what B.somethingC.anythingD. that
4. Information has beenputforward ____ more middle school graduates will be admitted intouniversities.
A. whileB.thatC.whenD.as
5. This is ___theshenzhou V Spaceship landed.
A.thereB.in whichC.where D.when
6. They have no idea atall____.
A.where he has goneB.where did he go
C. which place has he gone D.where has he gone
7. The doctor did a lotto reduce the patient’s fear ____he would die of thedisease.
A.thatB.which C.of whichD.of that
8. The order came ___thesoldiers ____the small village the next morning.
A. that;had to leaveB.that; should leave
C. /; mustleaveD.when; should leave
9. ___is no possibility____Bob can win the first prize in the match.
A.There; that B.It; that C.there; whetherD.It; whether
10. The question came up at themeeting_____ we had enough money for our research.
A.thatB.which C.whetherD.if
11. Is _____he said reallytrue?
A.thatB.what C.why D.whether
12.____the meeting should last two days orthree days doesn’t matter.
A.That B.Whether C.If D.Where
13. It worried her a bit _____her hair wasturning gray.
A.while B.ifC. that D.for
14._____morecountries can use natural energy in the future remains to beseen.
A.Whether B.This C.who D.If
15.____he will go to work in a mountainvillage surprises all of us.
A.What B.That C.Whether D.If
16. ____you don’t like him is none of mybusiness.
A.What B.ThatC. WhoD. How
17.____all the inventions have in commonis ____they have succeeded.
A.What; whatB. That; that C.what; thatD. That ; what
18. ____appeared to me that he enjoyed thefood very much.
A.WhatB. ItC. All thatD. That
19. It is widely ______that smoking cancause cancer.
A.believedB.thinkC. sayD. hoped
20. ____caused the accident is still acomplete mystery.
A.WhatB. ThatC. HowD. Where
21. ____he always serves the people verywell is known.
A.WhatB. ThatC. Which D.Who
22.____has passed the test will get aprize .
A.WhoeverB. No mater who C.WhomeverD. Who
23.Is____ true that the famous scientistwill give us a lecture next week?
AthatB itC hisD he
24.It has not been decided ___ they willleave for New York.
A.whenB whyC thatD what
25. Obviously___ we do morning exercisesevery day ___ us good.
A.that doB. if; doC what; does D. that;dose
26 It is said____ ____ was all ___ hesaid.
Athat; that; that B what; what;what Cthat; which; what D that; that;which
27___ gets home first is to cook thesupper.
A.WhoB Whom C.Those who D.Whoever
28___ moved us most was___ he liked afterthe old man for more than twenty years.
A.That; that B.What; that CWhat; what D.That; what
29.___ you did it is not known toall.
A. WhoB. WhatC. HowD. Which
30.___ you do should be welldone.
A HowB. ThatC. Whatever DWhy
31. The reason I plan to go is___ she willbe disappointed if I don’t.
A.becauseB. thatC. thanks to D.what
32. What time do you think__?
A. will Tom comebackB. Tom will come back
C. is Tom comingbackD. can Tom get here
33. The teacher said that light___ fasterthan sound.
A. HastraveledB. traveled C. hadtraveledD. travels
34..___ is still a question___ willwin.
A. It;that B.It; who C.That; who D.This; that
35. If you know___ it was that write ATale of Two Cities, raise your hand.
A. whom B.whichC. who D.that
36. In some countries,___ are called“public schools” are not owned by the state.
A. thatB. whichC. asD. what
37. Thinking___ you know___ in fact youdon’t is a terrible mistake.
A. that;that B.what; what C.that; what D.what that
38. Whether ways will be found to stoppollution or not is just___ worries the public.
A. whyB. whichC. thatD. what
39. Why don’t you bring___ to hisattention that you are too busy to do it?
A. thatB. whatC. thatD. it
40.___ David says sounds right to Helen.That’s why she has made up her mind to leave with him___happens.
A. whatever;whateverB. No matter what; whatever
C. No matter what; No matterwhatD. Whatever; however
41. That is___ I was born and grewup.
A. There B.in which C.whereD. the place
42.___ she was invited to the ball madeher very happy.
A. What B.ThatC. WhenD. Because
43.___ we are doing has never been donebefore.
A. That B.WhatC. WhichD. Whether
44.---Have you found your bookyet?
---No, I’m notsure___ I could have left it.
A.whether B.whereC. whenD. why
45. The doctor couldn’t answer thequestion___ the patient could survive that night.
A. ifB. thatC. whether D.what
46. I firmly believe___ he said at the meeting wasright.
A. thatB. whichC. that what D. whatthat
47.---What were you trying to prove to thepolice?
---___ I was lastnight.
A. That B.WhenC. WhereD. What
48. I think, though I could be mistaken, __ heliked me.
A. who B.whichC. thatD. what
49. At the meeting, we discussed___ we shouldemploy more workers.
A. ifB. whetherC. thatD. /
50. After___ seemed like hours he came out with abitter smile.
A. which B. itC. whatD. that
四.答案
1—5 ABABC 6—10AABAC11—15 BBCAB 16—20BCBAA
21—25 BABAD 26—30 ADBCC 31—35BBDBC36—40 DCDDA
41—45 CBBBC 46—50CCCBC
