(完整版)主語從句詳解

1、主語從句詳解一、概述在句子中起名詞作用的各種從句統(tǒng)稱為名詞性從句.根據(jù)它們?cè)诰渲械恼Z法作用，這類從句 又可分為主語從句、同位語從句、表語從句和賓語從句.二、主語從句主要有四類（1）由連詞that引導(dǎo)的主語從句:引導(dǎo)詞that無含義/在句中不做成分/不可以省.例如：That you will win the medal seems unlikely.That you are so indifferent bothers me.That she survived the accident is a miracle.（2）用連詞whether引導(dǎo)的主語從句：whether有含義（是否）/在句中不做成

2、分/不可以省.注意：引導(dǎo)主語從句，不能用if,只能用whether.例如： Whether we will hold a party in the open air tomorrow depends on the weather.Whether she is coming or not doesnt matter too much.（3）用連接代詞引導(dǎo)的主語從句在由連接代詞 who, whose, whom, which, what, whoever, whomever, whichever, whatever 弓| 導(dǎo) 的名詞性從句中，其連接代詞在句中起名詞性作用，擔(dān)當(dāng)一定成分.例如： Wh

3、at you need is more practice. What I want to know is this.Whatever we do is to serve the people.注：whatever / whoever 的功用whatever, whoever在主語從句中不含疑問意義.它引導(dǎo)主語從句，并在從句中作主語、賓語、 表語等.whatever = anything that; whoever = anyone who.要注意和 whatever, whoever 弓|導(dǎo)的讓步狀語 從句的區(qū)別.Whoever breaks the law should be punishe

4、d.（主語從句）（=Anyone who breaks the law should be punished.）Whoever breaks the law, he should be punished.（讓步狀語從句）（=No matter who breaks the law, he should be punished.）（4）用連接副詞when, where, why, how引導(dǎo)名詞性從句（其連接副詞有含義，在句中作狀語.） 例如:Where we should leave it is a problem.When they will come hasnt been made pub

5、ic.三、注意點(diǎn)：it構(gòu)成的主語從句（1）由連詞that引導(dǎo)的主語從句，在多數(shù)情況下放到句子的后面，而用代詞it作形式主語.例如：That light travels in straight lines is known to all.=It is known to all that light travels in straight lines.表從練習(xí)The question is we will have our sports meet next week.A. thatB. ifC. whenD. whetherThe reason why he failed is he was to

6、o careless.A. because B. thatC. forD. because ofGo and get your coat. It5 s you left itA. where B. thereC. there where D. where thereThe problem is to take the place of TedA. who can we getB. what we can getC. who we can getD. that we can getWhat I want to know is he likes the gift given by us.A. th

7、at B. ifC. whether D.不填The reason is I missed the bus.A. thatB. whenC. whyD. whatThat is we were late last time.A. thatB. whenC. whyD. whatShe looked she were ten years younger.A. that B. like C. as D. as thoughI fell sick!-I think it is you are doing too much.A. whyB. whenC. whatD. becauseThe reaso

8、n why he hasnt come is.A. because his mother is illB. because of his mothers being illC. that his mother is illD. for his mother is ill一He was born here.That is he likes the place so much.A. thatB. whatC. whyD. howThat is Lu Xun once lived.A. whatB. whereC. thatD. Whyyour father wants to know is get

9、ting on with your studies.A. What; how are youB. That； how you areC. How； that you areD. What； how you areThe trouble is we are short of tools.A. whatB. thatC. howD. why thatAmerica was was first called India” by Columbus.A. what B. whereC. the place D. there whereChina is becoming stronger and stro

10、nger. It is no longer.A. what it used to beB. what it was used to beingC. what it used to beingD. what it was used to behe really means is he disagrees with us.A. What. thatB. That. whatC. What . whatD. That . whatThe energy is makes the cells able to do their work.A. that B. which C. what D. Suchdr

11、ove to Zhuhai for the air show last week .一Is that you had a few days off?A. whyB .what C. whenD. wherehad neither a raincoat nor an umbrella I got wet through.A. Its the reason B. Thats why C. Theres why D. Its howSee the flags on top of the building? That was we did this morning.A. whenB. whichC.

12、whereD. what Are you still thinking about yesterdays game?-Oh, thats.A. what makes me feel excited B. whatever I feel excited aboutC. how I feel about itD. when I feel excitedWhat surprised me was not what he said but he said it.A. the way B. in the way that C. in the wayD. the way whichThe question

13、 is we will have our sports meet next week.A. thatB. ifC. whenD. whetherThe reason why he failed is he was too careless.A. because B. thatC. forD. because ofGo and get your coat. If s you left itA. where B. thereC. there where D. where thereThe problem is to take the place of TedA. who can we getB.

14、what we can getC. who we can getD. that we can getWhat I want to know is he likes the gift given by us.A. that B. ifC. whetherD.不填The reason is I missed the bus.A. thatB. whenC. whyD. whatThat is we were late last time.A. thatB. whenC. whyD. whatShe looked she were ten years younger.A. that B. like

15、C. as D. as thoughI fell sick!I think it is you are doing too much.A. whyB. whenC. whatD. becauseThe reason why he hasnt come is .A. because his mother is illB. because of his mothers being illC. that his mother is illD. for his mother is illHe was born here.That is he likes the place so much.A. tha

16、tB. whatC. whyD. howThat is Lu Xun once lived.A. whatB. whereC. thatD. whyyour father wants to know is getting on with your studies.A. What; how are youB. That； how you areC. How； that you areD. What； how you areThe trouble is we are short of tools.A. whatB. thatC. howD. why thatAmerica was was firs

17、t called India“ by Columbus.A. what B. whereC. the place D. there whereChina is becoming stronger and stronger. It is no longer.A. what it used to beB. what it was used to beingC. what it used to beingD. what it was used to be.he really means is he disagrees with us.A. What. thatB. That whatC. What

18、. whatD. That . what. The energy is makes the cells able to do their work.A. that B. which C. what D. such一I drove to Zhuhai for the air show last week.Is that you had a few days off?A. whyB .what C. whenD. where.1 had neither a raincoat nor an umbrella I got wet through.A. Its the reason B. Thats w

19、hy C. Theres why D. Its how. See the flags on top of the building? That was we did this morning.A. whenB. whichC. whereD. what.- Are you still thinking about yesterdays game?Oh, thats.A. what makes me feel excited B. whatever I feel excited aboutC. how I feel about itD. when I feel excited. What sur

20、prised me was not what he said but he said it.A. the way B. in the way that C. in the way D. the way which綜合練習(xí). It has been proved eating vegetables in childhood helps to protect you againstserious illnesses in later life.A. if B. because C. when D. that. The last time we had great fun was we were v

21、isiting the Water Park.A. where B. how C. when D. why.matters most in learning English is enough practice.A. What B. Why C. Where D. Which. The traditional view is we sleep because our brain is “programmed” to make use do so.A. when B. why C. whether D. that.parents say and do has a life-long effect

22、 on their children.A. That B. Which C. What D. As.is our belief that improvements in health care will lead to a stronger, more prosperous economy.A. As B. That C. This D. Itteam wins on Saturday will go through to the national championships.A. No matter what B. No matter which C. Whatever D. Whichev

23、erYou are saying that everyone should be equal, and this is I disagree.A. why B. where C. what .D howAfter Yang Liwei succeeded in circling the earth,our astronauts desire to do is walk in space.A. where B. what C. that D. howthink Father would like to know Ive been up to so far, so I decide to send

24、 him aquick note.A. which B. why C. what D. howOur country is developing at an amazing speed, and this is makes me feel so proud.A. what B. which C. that D. why12.puzzles the scientists how these creatures can survive in such severe conditions.A. What B. As C. That D. Iteaves the room last ought to

25、turn off the lights.A. Anyone B. Who C. Whoever D. The personInside the White House, there is a room called the Oval Office. Thats the presidentworks.A. whey B. when C. what D. whereyou will be admitted to York University will be decided by the Admission Committee. A. That B. Whether C. What D. IfTh

26、e reason I plan to go is she will be disappointed if I dont.A. why; that B. that; because C. which; because D. why; forWe sell handmade gifts.gift you order from us is unique for the special person!A. Which B. That C. Whichever D. WhatWhen the plane is to take off has not been announced .=It has not

27、 been announced when the plane is to take off.(但當(dāng)what引導(dǎo)的主語從句表示“的東西”時(shí)，一般不用it作形式主語.) 錯(cuò):It is a book what he wants.對(duì):What he wants is a book.另外，需要注意的是，it作形式主語代替主語從句時(shí)，要注意和as引導(dǎo)的定語從句的區(qū)別.試 比擬：It was reported that the US was under the terrorist attack.As was reported, the US was under the terrorist attack.(

28、2)常見用it作形式主語的復(fù)合句結(jié)構(gòu)It is +名詞+從句It is a fact that.事實(shí)是It is good news that是好消息、It is a question that是個(gè)問題It is common knowledge that是常識(shí)類似的名詞還有：a pity； a wonder； a good thing； no wonder； surprise 等.例如：It is a mysteiy to me how it all happened.It is common knowledge that the whale is not a fish.It is no s

29、urprise that Bob should have won the game.Its a pity that you missed the film.It is +形容詞+從句It is necessary that. 有必要It is clear that.很清楚It is likely that .很可能It is important that.重要的是類彳以的形容詞還有：Strange; natural; obvious; true; good; wonderful; possible; unlikely; quite;unusual; certain; evident; wort

30、h-while; surprising; interesting; astonishing, etc.例如：It is doubtful whether she will be able to come.It was really astonishing that he refused to talk to you.It is essential that he should be here by the weekend.It seems obvious that we cannot go on like this.It is necessary that you (should) maste

31、r the computer.It is important that a student learn English well.It is likely that a hurricane will arrive soon.需要注意的是，這類主語從句中，謂語動(dòng)詞很多為“(should) +動(dòng)詞原形二即要用虛擬語氣.It is +過去分詞+從句It is said that. 據(jù)說It is reported that .據(jù)報(bào)道It has been proved that. 已證明It must be proved that.必須指出類彳以的過去分詞還有：known; estimated; e

32、xpected; 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.It is estimated that the vase is 2000 years old.It is used to be thought that a new star must be due to a collision between two stars.It h

33、as not been made clear when the new road is to be opened to traffic.It is said that he was killed in the earthquake.It seems (happened / appears / doesnt matter / makes no difference / occurred .) that.It seems that they will win the game.It makes no difference whether he will attend the meeting or

34、not.It does not matter if I missed my train.It happened that I saw him yesterday.主從練習(xí).as much as one-fifth of all timber harvested is not used.A. The estimateB. The estimatedC. They are estimated D. It is estimated that2.some mammals came to live in the sea is not known.A. Which B. Since C. Although

35、 D. How.we have achieved is attributed to the guidance of our parents.A. Whoever B. Whatever C. However D. That.wealthy does not necessarily mean that a man is greedy.A. For the reason that he is B. Just because he isC. The reason of beingD. That he isAlthough happened in this developed country soun

36、ds like science fiction, it could occurelsewhere in the world.A. which B. what C. how D. it6.she had forgotten to take her notebook.A. That occurred to herB. She occurred thatC. To her that occurredD. It occurred to her thatam sure that she said is wrong.A. which B. all C. this D. whatWe lost our wa

37、y in the forest, and made matters worse was that it was getting dark.A. that B. which C. it D. What9.or not is still uncertain.A. Hes comingB. If he is comingC. That comingD. Whether hes coming10. Its hell be able to come.A. doubt whether B. doubtful C. doubt it D. doubtful whether.he is at work in

38、the heart of the big city or at home in the quiet suburb, Dicks 1 ife is tied to machines.A. Whether B. Till C. If D. Unless.he saw both surprised and frightened him.A. That B. When C. What D. Which13.is warm sunshine.A. What do we all need. B. What all we needC. What we needD. What we all need14.is

39、 a pity that he should feel so upset.A. What B. That C. He D. It15.a spoonful of soil can tell us so much about the structure and early history of the moon.A. RemarkableB. Quite remarkablyC. It is remarkable that D. It is remarkable fact that.you nominate will be elected.A. Who B. Whom C. Whomever D

40、. Thafs.book you borrow must be returned within a week.A. WhatB. WhichC. Whichever D. Thafs18.of us gets home first starts cooking.A. WhoB. WhichC. Whichever D. Anyone.makes mistakes must correct them.A. What B. That C. Whoever D. Whatever. It worried her a bit her hair was turning grey.A. while B.

41、that C. if D. for.When and why he came here yet.A. is not known B. are not knownC. has not known D. have not known4.is no reason for dismissing her.Because she was a few minutes lateOwing to a few minutes lateThe fact that she was a few minutes lateBeing a few minutes late.Tom liked to eat was diffe

42、rent from.A. That.that you had expected B. What .that you had expectedC. That.what you had expected D. What.what you had expected.we go swimming every day us a lot of good.A. If.do B. That.do C. If.does D. That.doest Bob drives badly.A. thinks that B. is thought what C. thought that D. is thought th

43、atts uncertain the experiment is worth doing.A. if B. that C. whether D. how.the boy didn*t take medicine made his mother angry.A. That B. What C. How D. Which.we cant get seems better than we have.A. What, what B. What, that C. That, that D. That, what.you donft like him is none of my business.A. W

44、hat B. Who C. That D. Whetherell go camping tomorrow depends on the weather.A. IfB. Whether C. That D. Where13.is going to do the job will be decided by the Party committee.A. That B. Why C. How D. Who.well finish translating the book depends on the time.A. When B. Why C. What D. That.he wont go the

45、re is clear to all of us.A. How B. What C. Why D. This.the house will be built will be discussed at tomorrows meeting.A. IfB. Where C. That D. What.you come or not is up to you.A. What B.IfC. Why D. Whether.makes mistakes must correct them.A. Who B. Anyone C. Whoever D. Anybody.team will win the mat

46、ch is a matter of public concern.A. Which B. That C. IfD. How. Who is this factory some foreign friends visited last Friday?A. that B. where C. which D. the one.Is this factoryyou visited the other day?A. that B. where C. in which D. the one.leaves the room last ought to turn off the lights.A. Anyon

47、e B. The person C. Whoever D.Who表語從句1、概述用作表語的從句叫作表語從句，它位于主句中的連系動(dòng)詞之后.引導(dǎo)表語從句的詞有附屬連 詞 that、whether as though（if）； 關(guān)系代詞 who, what, which, whom, whose, whatever, whoever, whomever, whichever 等； 關(guān)系副詞 when, where, why, how, however, whenever, wherever 等. 可以接表語從句的連系動(dòng)詞由be, look, remain, seem等.That引導(dǎo)表語從句時(shí)，在口語

48、中，間 或可以省略.The trouble is that we are short of money.困難是我們資金短缺.That is why stone walls are used instead of fences around New England fields.這就是為什么在新 英格蘭用石頭墻而不用柵欄的原因.At that time, it seemed as if I couldnt think of the right word anyhow.當(dāng)時(shí)，我似乎怎么也想不出 一個(gè)恰當(dāng)?shù)淖盅蹃?2、由附屬連詞that, whether引導(dǎo)的表語從句.that在引導(dǎo)表語從句時(shí)無詞義

49、，而whether有詞義，意為、“是否”.這時(shí)主句的主語常常是些 抽象名詞,如 question（問題），trouble（麻煩），problem（問題），result（結(jié)果）,chance（可能性）, suggestion（建議）,idea（想法）,reason（理由）等.表語從句對(duì)主句主語進(jìn)行說明、解釋，使主語的 內(nèi)容具體化.The trouble is （that） she has lost his money.麻煩的事是他丟了錢.The question is whether we need more ice cream.問題是我們是否還需要一些冰淇淋.The problem was t

50、hat it was too valuable for everyday use.問題是它作為日常之用太貴重了. What she couldnt understand was that fewer and fewer students showed interest in her lessons. 我們不能理解越來越少的學(xué)生對(duì)他的課不感興趣.3、由關(guān)系代詞引導(dǎo)的表語從句.關(guān)系代詞 who, what, which, whom, whose, whatever, whoever, whomever, whichever 等弓I 導(dǎo)表 語從句，在句中作主語、賓語、表語，關(guān)系代詞不能省略.The

51、question is which of us should go.問題是我們哪一個(gè)應(yīng)該去.The problem was who could do the work.問題是誰能做這項(xiàng)工作.Thats what he is worrying about.那就是他在擔(dān)憂的事.Thats what we should do.那是我們應(yīng)該做的.4、由關(guān)系副詞引導(dǎo)的表語從句.Go and get your coat. Its where you left it.去把雨衣拿來.就在你原來放的地方.I had neither a raincoat nor an umbrella. Thafs why I

52、got wet through.我彳門既沒傘也沒雨衣,這 是我們淋濕的原因.That is how mice ruin many stores of grain every year.那就是老鼠是怎樣每年損害大量糧食的.That is what he is worried about.那就是他所擔(dān)憂的.5、由連詞because, as if/as though等引導(dǎo)的表語從句.It looked as if it was going to snow.看起來好像要下雪了.Thats because we never thought of it.這是因?yàn)槲覀儚奈聪脒^止匕事.It seems as

53、if he didnt know the answer.好像他不知道答案.可以接表語從句的系動(dòng)詞有：1： be ( being,been,am,is,are,was,were)feel, seem , look, appear 9sound9 taste, smellstand , lie , remain ,keep, staybecome ,get, grow , turn ,go ,come, run,fallprove, turn out系動(dòng)詞的固定搭配：come true, fall asleep, fall ill, go bad, come right, run wild連接詞：

54、that / whether /as if /asthough (if不引導(dǎo)表語從句)連接代詞：who / whom / whose / which/ what連接副詞：when / where / why / how /because注：引導(dǎo)表語從句的連詞that間或可以省略.The truth is (that) I didnt go there.事實(shí)是我沒去那兒.考題 1 The traditional view is we sleep because our brain is programmed” tomake us do so.A. when B. why C. whether D

55、. that答案D解析下劃線處之后是包含一個(gè)原因狀語從句的表語從句，如果看不出它是 充當(dāng)整個(gè)句子結(jié)構(gòu)的表語從句將難以把握整個(gè)句子的意思.因此，應(yīng)選擇可引導(dǎo)名詞 性從句且不充當(dāng)任何成分的that.考題 2 You are saying that everyone should be equal, and this isI disagree.A. why B. where C. what D. how答案B解析下劃線處的引導(dǎo)詞引導(dǎo)系動(dòng)詞is后的表語從句并在該表語從句中充當(dāng) 地點(diǎn)狀語（disagree”屬于不及物動(dòng)詞，“I disagree”本身是完整的主謂結(jié)構(gòu)）,下劃線 應(yīng)填入引導(dǎo)詞where,表語從句“where I disagree”的意思是“我不同意之處、我不同 意的地方考題 3 I drove to Zhuhai for the air show last week.一 Is