情態(tài)動詞+完成時講解學習

1、情態(tài)動詞+完成時精品文檔情態(tài)動詞+完成時(modalverbs+have+pastparticiple)情態(tài)動詞和動詞原型連用，表示對目前或?qū)砬闆r的看法或態(tài)度情態(tài)動詞和完成時連用時，表示對過去情況的看法或態(tài)度。1. should+have+過去分詞表示過去本應該一”，實際上是說話人在表達責備，抱怨或遺憾的意思。Weshouldhavecutawaythejunglebush.我們本應該把叢林的灌木砍掉。HowIregrettedthedayswhenIhadplayedandshouldhavestudied.我多么懊悔我把本應該好好學習的日子都玩掉了。shouldn't+have+

2、去分詞表示過去本不應該”而實際上做了的動作。Youshouldn'thavetoldanyoneaboutit.你本來不應該告訴任何人。Theyshouldn'thaveleftsosoon.他們本來不應該去得那么早。2. oughtto+have+過去分詞表示過去本應該-"，相當于"should+h&e+過去分詞”Yououghttohavehelpedhim.你本應該幫他一把。Yououghttohavereturnedthesebookstotheschoollibrarylastweek.上周你就應該把這些書還給學校圖書室。否定形式ought

3、n'tto+have+過去分詞=shouldn't+have過去分詞eg.Yououghtn'ttohavetakenhisumbrellaaway.你不該把他的傘拿走。Heoughtn'ttohavebeenthere.收集于網(wǎng)絡，如有侵權請聯(lián)系管理員刪除精品文檔他本不應該到那去。3. must+have+過去分詞表示對過去情況的推測，譯成當時一定；想必已經(jīng)；當時可能WhatachallengeImusthavebeentothisyoungteacher.對這位年輕教師來說，教我這樣的學生當時一定是個巨大的挑戰(zhàn)。Sincetheditchisfullofwa

4、ter,itmusthaverainedlastnight.因為溝里漲滿了水，昨晚一定下過雨了。表示對過去情況的否定推測時。要用“can't(couldn't)+haiVe+分詞”，一般不用“mustn't+have過去分詞Joecan'thaveleft.Isawhimjustnow.喬不可能離開了，剛才我還看見他了。Thepartycouldn'thavebeensuccessfulasyouhadhoped.舞會不可能象你希望的那樣成功?！癿ust+have+過去分詞”表示對過去情況推測時，反意疑問句用have(has),有明確表示過去時間的狀語(

5、before除外)反意疑問句用did.Hemusthavefinishedhishomework,hasn'the?他準把作業(yè)做完了。對嗎？Hemusthaveattendedthemeetingyesterdayevening,didn'the?他昨晚上肯定參加會議了，是嗎？4. may(might)+have+過去分詞表示對過去情況的推測，可用于肯定句，否定句，但不用于疑問句InreturnImayhavebeenabletoteachyoualittleaboutmedicaltechnique.作為報答，我也許教給了你們一點點醫(yī)療技術。Mighthehavebeenca

6、ughtandkilled?他有可能被抓住殺掉了嗎？收集于網(wǎng)絡，如有侵權請聯(lián)系管理員刪除精品文檔might+have+過去分詞也能表示對過去的事情的可能性的推測，有本應該一”，含有婉轉(zhuǎn)責備的意思。YoumighthavelistenedtomewhileIwastalkingtoyou.我對你講話時，你應該認真聽才對。Youmighthaveletmeknowbeforeyouwentout.外出之前，你本應該先告訴我一聲。5. can(could)+have+過去分詞表示對過去情況的推測。“can+have+過去分詞”一般多用于疑問句和否定句，不用于肯定句。Canhehavegoneyest

7、erday?難道他昨天就已經(jīng)走了嗎？Theycan'thavelostthemselvesinthewoods,becauseIdrewamaptothem.他們不可能在森林中迷路，因為我給他們畫了一張畫。Billcouldn'thavegonehomethisweekend.Isawhimattheschoolgroundthismorning.本周末貝爾不可能回家，今天下午我還在學校操場上看見他了。Marycan'thavegonetoschool.It'sSunday.瑪麗不可能去上學，今天是星期天。在表示對過去某事的推測時，可用could/might/m

8、ay+完成時。Theycould/might/mayhaveheardthenewsfromsmith.他們也許從史蜜斯那兒聽到了這個消息。6. need+have+過去分詞表示過去沒有必要做”，但實際做了。有責備的意思。否定形式表示做了本不應該做”的事Youneedn'thavewokenmeupsoearly.It'sSundaytoday.你沒有必要這么早就叫醒我，(因為)今天是星期天。Youneedn'thavewateredtheflowers,foritisgoingtorain.你本來不必澆這些花，因為天就要下雨了。Youneedn'thaveto

9、ldhimthenews;heknewitalready.收集于網(wǎng)絡，如有侵權請聯(lián)系管理員刪除精品文檔你不必再告訴他這個消息，他已經(jīng)知道了。Youneedn'thavewalkedup;youcouldhavetakenthelift.你沒必要走著上去；你本來可以乘電梯。didn'tneedtodo(=Ididn'thaveto)的本沒有必要做也沒有做”Ididn'tneedtogotothebank.IborrowedsomemoneyfromMary.我不必去銀行-我找瑪麗借了點兒錢.翻譯理解以下句子：1. Itmusthaverainedlastnight

10、,forthegroundiswet.2. Youmusthavebeenmadtospeaktoananimal.3. Mr.Smithcan'thavegonetoBeijing,forIsawhiminthelibraryjustnow.4. Marycan'thavetakenyourdictionary.Shehasgonehome.5. Thereisnolightintheroom.Cantheyhavegoneout?6. Thereisnowheretofindthem.Wherecantheyhavegone?7. Hecouldhavepassedthee

11、xam,buthewastoocareless.8. WhathashappenedtoGeorge?Idon'tknow.Hemayhavegotlost.9. Hemighthavegivenyoumorehelp,eventhoughhewasbusy.10. Shemighthaveachievedgreaterprogress,ifyouhadgivenhermorechances.11. Tom,youaretoolazy.Theworkshouldhavebeenfinishedyesterday.12. Look,Tomiscrying.Ishouldn'tha

12、vebeensoharshonhim.13. IoughttohavegonehomelastSunday.14. Yououghtnottohavegivenhimmorehelp.15. Ineedn'thaveboughtsomuchwineonlyfivepeoplecame.鞏固性練習：從A、B、C、D中選擇最佳答案。1.-Youdidn'twaitforMr.Smithlastnight,didyou?-No,butwe.Hedidn'treturnhomeatall.A. couldn'thavewaitedB. needn'thav沒有必

13、要做但實際做了C. didn'tneedtfi有必要做實際也沒有做D.shouldwait收集于網(wǎng)絡，如有侵權請聯(lián)系管理員刪除精品文檔2. HarryhavewonthePhysicscompetitioneasilyyesterday,buthegaveup.A.couldB.mightC.shouldD.must3. -MayIspeaktoyourmanagerMr.Smithatsixo'clocktonight-"I'msorry,Mr.Smtoaconferencebeforethen.”A.willhavegoneB.hadgoneC.would

14、havegoneD.hasgone4. -Tomtookawaymycellphonewithoutbeingpermitted.-Really?Ican'timaginethathehavedonesuchathing.A.mustB.mayC.canD.should5. -WasitMarywhomadethesuggestion?-Ithavebeen.Ican'tremember.A.needB.mustC.shouldD.may6. Theweatherturnedouttobefineyesterday.Ithetroubletocarrymyumbrellawit

15、hme.A.shouldhavetakenB.couldhavetakenC.needn'thavetakenD.mustn'thavetaken7. Hepaidforaseat,whenhehaveenteredfree.A.couldB.wouldC.mustD.need8. Ididn'tseehierthemeetingroomthismorning.Sheatthemeeting.A.mustn'thavespokenB.mightn'thavespokenC.can'thavespokenD.shouldn'thavespo

16、ken9. -Hi,isthatPeterBrown?-Sorry.Youthewrongnumber.A.mustdialB.musthavedialedC.shoulddialD.shouldhavedialed10.Iwasonthehighwaywhenthiscarwentpastfollowedbyapolicecar.Theyatleast150kilometersanhour.A. shouldhavebeendoingB. musthavebeendoingC. couldhavedoneD. wouldhavedone11. Heisnotpoor.Youhavelenth

17、imthemoney.A.can'tB.needn'tC.couldn'tD.mustn't12. Therewasplentyoftime.Youhavehurried.收集于網(wǎng)絡，如有侵權請聯(lián)系管理員刪除精品文檔A.won'tB.mustn'tC.needn'tD.couldn't13. Ihereintime,butImetanoldfriendofmine.Istoppedandtalkedwithhimforsometime.A. shouldn'thavecomeB. musthavecomeC. needn&

18、#39;thavecomeD. couldhavecome14. Theyhavefinishedtheworkyesterday,butitwasraininghard.A.mustB.couldC.shouldD.might15. Hewassenttohospital.Somethingtohim.A. musthappenB. shouldhavehappenedC. couldhavehappenedD. musthavehappened16. Ididn'thearthephone.Iasleep.A.mustbeB.musthavebeenC.shouldbeD.shouldhavebeen17. -Irangyourhomeyesterday.AmanansweredbutIdidn'trecognizethevoice.-On,itmybrother,Peter.A.mustbeB.musthavebeenC.canhavebeenD.mightbeKeysforreference:1-5CAADD6-10CACBB11-15BCDBD16-3BB教學反