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1、一虛擬語氣用于條件狀語從句中1. 表示與現(xiàn)在事實相反或不可能發(fā)生:條件狀語從句: 一般過去時(虛擬語氣中be were )主句用: would(should, could, might)+動詞原形。If we had time now, we would read it again.If I were you, I would work hard.2. 表示與過去事實相反或不可能發(fā)生: 條件狀語從句: had+ 過去分詞;主句:would(should,could, might)+have+過去分詞。If he had taken my advice, he would have succee
2、ded in the test.If I had known your telephone number then, I would have called you.3. 表示與將來的事實可能相反或不可能發(fā)生:條件狀語從句: 一般過去時should +動詞原形 were to+動詞原形;主句:would(should, could, might)+動詞原形。If it should rain, the crops would be saved.If it were to snow tomorrow, they would not go out.P.S 虛擬條件句的特殊情況(1).混合 / 錯綜
3、型虛擬語氣當條件狀語從句表示的行為和主句表示的行為所發(fā)生的時間不一致時,稱為錯綜條件句,動詞的形式要根據(jù)它所表示的時間作出相應的調(diào)整。If you had followed my advice, you would be better now.(從句說的是過去,主句是現(xiàn)在 )If I were you, I would have taken his advice.(從句是現(xiàn)在,主句是過去)( 2 )省略 if 的虛擬語氣- 1 -如果從句中含有were/ should/ had時,則可以把這三個詞置于句首,省略if. 采用倒裝語序。If it should happen, what would
4、 you do?Should it happen, what would youdo?If he had recognized me, he would have come over. Had he recognized me, hewould have come over.(3)含蓄虛擬條件句有時候假設的情況不以if 引導的條件從句形式表現(xiàn)出來,而是通過一個介詞短語,連詞或其他形式表示。常用的詞或短語有:without, with, but for(要是沒有 ), otherwise, or, but等。Without your help(=If we had not had your he
5、lp), we could not have succeeded.But for electricity(=If there were no electricity, there would be no modernindustry.He felt very tired yesterday, or/ otherwise he would have attended the party.(4)在 if it were( had been )not for.句型中的虛擬語氣虛擬語氣也常用于if it were/(had been) not for.句型中,意為要不是由于。If it were no
6、t for peace, we could not be living a happy life today.If it had not been for your timely help, I would have gone bankrupt.二虛擬語氣用在名詞性從句中1. 主語從句中的虛擬語氣這種虛擬語氣主要用在it is+ 形容詞(名詞,過去分詞)+that+主語 +should+動詞原形( should可以省略)這種結構中。- 2 -常見的這類形容詞有:advisable, anxious, better, desirable, surprising,natural, necessar
7、y, strange, important, regretful.常見的這類過去分詞有:decided, demanded, recommended, requested,desired, required, ordered, suggested.常見的這類名詞有:duty, pity, no surprise, no wonder, regret, shame.It was suggested that he( should) join the club activities.It is strange (surprising, disappointing) that she (should
8、) not have been invited.It is a pity that he (should) refuse to accept the offer.2. 賓語從句中的虛擬語氣 wish 后面所跟賓語從句謂語動詞用虛擬語氣(意為要是,但愿就好了),其形式主要有三種:表示對現(xiàn)在情況的虛擬: wish 后接一般過去時的從句表示對過去情況的虛擬:wish后接過去完成時 /should, could have done表示對將來情況的虛擬:wish后接 would , could+動詞原形Iwish it were spring all year round.I wish it would
9、 be fine tomorrow.She wished she had stayed at home.在表示建議, 命令,要求等動詞后的從句要用(should)+ 動詞原形。 此類動詞有: suggest,advise, propose, demand, require, insist(要求) , order, prefer, command, ask,request.The teacher ordered that all the books (should) be handed in on time.- 3 -P.S. 當 suggest表示暗示,說明之意;insist表示堅持認為,堅持
10、說之意時,從句不用虛擬,用正常的陳述語氣。The man insisted that he had never stolen the money.The smile on his face suggested that he was satisfied with life.3. 表語從句和同位語從句中的虛擬語氣在表示建議,命令,要求的名詞后的表語從句或同位語從句中的謂語動詞要用(should) +動詞原形。常見名詞有:advice, desire, request, demand, proposal, suggestion,preference, requirement, order.He g
11、ave orders that the guests (should) be hospital entertained.His proposal is that we (should) get rid of the bad habits.三虛擬語氣在其他情況中的使用1. 在 as if/ as though 引導的狀語從句中,若從句與事實相反,則要用虛擬語氣。其形式如下:主語 +as if/ though +主語 + 一般過去時(從句的動作與主句同時發(fā)生)主語 +as if/ though +主語 +would/could+動詞原形(從句的動作相對主句來說在將來發(fā)生)主語 +as if/ th
12、ough +主語 + 過去完成時(從句的動作先發(fā)生于主句動作之前)He talks as if he knew all about it.She speaks English well as if he had studied in America.He learns English so hard as if he would go abroad.2. 在 it is (high) time that句型中也用虛擬語氣,從句常用過去式,有時也用should +動詞原形,表示早該做而沒做的事,含建議的意味。- 4 -It is time that we went home.P.S. 此句型中,
13、注意與It/This is the +序數(shù)詞 +time that+現(xiàn)在完成式的區(qū)別。This is the first time that I have been here.3.would rather后接動詞原形,但接從句時要用虛擬語氣(寧愿,但愿)。Would rather +主語 + 一般過去時(表示與現(xiàn)在或將來相反)Would rather +主語 + 過去完成時(表示與過去相反)I d rather he didn t go now.I d rather you hadnt done it.4. if only后接從句也用虛擬語氣,其形式與wish的用法一致。5. 動詞 hope,
14、 intend, mean, plan, want, think等詞用過去完成的形式,表示的意思為 本想,本打算,本認為He had meant to buy the furniture last week, but it rained.高考虛擬語氣專項練習60 題1.If only he _quietly as the doctor instructed, he would not suffer so much now.A. liesB. layC. had lainD. should lie2.How I wish every family _a large house with a be
15、autiful garden.A. hasB. hadC. will haveD. had had3.You did not let me drive. If we _in turn, you _ so tiredA. drove; didn t getB. drove; wouldn t getC. were driving; wouldn t getD. had driven ; wouldn t have got4._it rain tomorrow, we would have to put off the visit to the Yangpu BridgeA. WereB. Sho
16、uldC. WouldD. Will5.I suggested the person _ to be put into prisonA. refersB. referringC. referredD. refer6.When a pencil is partly in a glass of water, it looks as if it_A. breaksB. has brokenC. were brokenD. had been broken7.I insisted _to see a doctor, but he insisted nothing _ wrong with himA. o
17、n him to go; should beB. he went; beC. he go; wasD. he should to; is- 5 -8. -Your aunt invites you to the movies today-I would rather she _ me tomorrow than todayA. tellsB. toldC. would tellD. had told9. -Would you have called her up ?-Yes, but I _busy doing my homeworkA. wasB. wereC. had beenD. wou
18、ld be10.I was ill that day, otherwise I _ the sports meetA. would have taken part inB. took part inC. had taken part inD. would take part in11._the clouds, you would find the airplane in the sky easilyA. Had it not been forB. If it were notC. If it had not been forD. Were it not for12.If my lawyer _
19、here last Sunday, he _ me from goingA. had been, would have preventedB. had been, would preventC. were, preventD. were, would have prevented13._hard, he would have passed the examA. If he were to workB. Had he worked C. Should he work D. Were he to work14._today, he would get there by FridayA. Were
20、he to leaveB. If he had leftC. Did he to leaveD. Had he left15.Had you listened to the doctor, you _all right nowA. areB. wereC. would beD. would have been16.I did not see your sister at the meeting. If she _, she would have met my brotherA. has comeB. did comeC. comeD. had come17.He _busy yesterday
21、, or he _you with your experiment.A. was, had helpedB. was, would have helpedC. had been, would have helpedD. were, would have helped18.If it _for the snow, we_ the mountain yesterdayA. were not, could have climbB. were not, could climbC. had not been, could have climbedD. hadn t been, could climb19
22、.Without electricity, human life _quite difficult todayA. isB. will beC. would have beenD. would be20.-I am going to tell her the news-I would as soon as you _her about itA. didn t tellB. don t tellC. hadn t tellD. won t tell21.Mike s father, as well as his mother, insisted he _home- 6 -A. stayedB.
23、could stayC. has stayedD. stay22. It was requested that the play _againA. should put onB. would put onC. be put onD. put on23. She insisted that a doctor _ immediatelyA. had sent forB. sendC. be sent forD. was sent24. -Did you scold him for his carelessness-Yes, but _itA. I d rather not doB. I d rat
24、her not have doneC. I should t doD. I d better not do25.If only I _my carA. hadn t lost B. wouldn t lose C. didn t loseD. haven t lost26.But for water, it _impossible to live in the earthA. isB. wouldbeC. wereD. wouldn t be27.I would rather you _anything about it for the time beingA. doB. didn t doC
25、. don t D. didnt28.The kind-hearted couple treat the orphan very well as though he _ their own sonA. isB. wereC. had beenD. should be29.How the old people wish that they _young once moreA. wereB. could becomeC. had beenD. should be30.It is high time that we _ a meeting to discuss this problemA. hold
26、B. heldC. have heldD. had held31.The thief closed his eyes _ he _dyingA. even if , wasB. though, would beC. even, had been D. as if, were32. I wish that you _ such a bad headache because I am sure that you would have enjoyed the concertA. had notB. did not have hadC. hadn t hadD. hadn t have33.The c
27、hairman insisted that we _the question againA. will discussB. to discussC. should discussD. will be discussed34.He requested that the students _them get in cropsA. helpB. to helpC. helpedD. helping35.The guard at the gate insisted that everybody _the rulesA. obeysB. ObeyC. will obeyD. would obey36.I
28、 wish I _here thenA. wasB. had beenC. wereD. would be37.It is strange that he _back so early- 7 -A. cameB. will comeC. had comeD. should have come38.Mother suggested that I _my homework first before watching TVA. didB. doC. shall doD. have done39.My suggestion is that the meeting _off till nest Sund
29、ayA. be putB. putC. should putD. had been put40.He is talking so much about America as if he _ thereA. had beenB. has beenC. wasD. been41.The teacher demanded that the exam _ before elevenA. must finishB. would be finishedC. be finishedD. must be finished42.-Sorry, Joe. I did not mean to-Don t call
30、me“ Joe” , I am Mr. Parker to you, and _ you forget it!A. doB. didntC. didD. don t43.I did not attend the lecture by Pro. Jackson. I _ but I _ all this morningA. would, have washedB. could, have been washingC. would have, have been washingD. could have, had washing44.How I wish I _ to repair the wat
31、ch! I only made it worseA. had triedB. hadn t triedC. have triedD. didn t try45.-How could I thank you enough?-Don t mention it. Any other man _itA. must doB. could doC. would have doneD. should have done46.Key European governments insist Iraq -operationsco_ good and militaryaction_ to allow inspect
32、ions to continueA. be, be delayedB. is, delayC. should be, be delayedD. is , be delayed47.If the hurricane had happened during the day-time, _more deathsA. it would have been B. it would beC. there would be D. there would have been48. What the customers_ from the company is that the goods _ right to
33、 their homes.A. requested, deliverB. demand, be deliveredC. request, should deliverD. demand, delivered49. If law-breakers _ the society will be in disorderA. made unpunishedB. came unpunishedC. went unpunishedD. not punished50. We took a taxi to the airport. Otherwise we _lateA. would beB. wereC. will beD. would have been51. Supposing he never _, what would happen then- 8 -A. comeB. cameC. would comeD. will come52
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