情态动词+ have done用法.ppt

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1、Unit1GrammarModalVerbI情态动词表示说话人的某种感情或语气，对某一动作或状态的某种态度。表示“需要、可以、必须、应当”等。什么是情态动词？(ModalVerbs)情态动词+havedone用法musthavedone想必/准是/一定做了否定式为：can’t/couldn’t/+havedoneItmusthaverainedlastnightfortheroadisquitemuddy.2.Can/couldhavedone1.本来能够做2.过去可能会做Canhehavegonetohisaunt?他有可能去她姨妈家了吗？3.Cannot/couldnothaved

2、one1.过去不可能2.过去没能够Hecannothaveforgottenit.他不可能忘了那件事。3.may/mighthavedone也许、或许已经做了，一般只用于肯定句或否定句中（在否定句中表示“可能不”)，不用于疑问句。用might表示语气更加不肯定。It’stoolate.Ithinkhemayhavegonetobed.Hemaynothavefinishedthework.他也许还没完成那项工作。4.should/oughttohavedone本该做，而实际上未做Yououghttohavedonethisexercisemorecarefully.你本应该更仔细地做这

3、个练习。5.shouldnot/oughtnottohavedone本不该做而做了Youshouldn’thavetoldhertruth.你本不该告诉她真相。6.needn’thavedone本不必做而做了Youneedn’thavetakenataxihere,foritwasveryneartomyhouse.7.hadbetter(not)havedone当时最好（没）做了某事Youhadbetternothavescoldedher.8.wouldrather(not)havedone宁愿当时（没）做了某事Iraisedobjectionsatthemeeting,butno

4、wIwouldratherhavenotdonethat.9.wouldlike/lovetohavedone过去愿意做但未做成Iwouldlovetohavegonetothepartylastnight,butIhadtoworkextrahourstofinishareport.昨晚我本来很想去参加聚会的，但我得加班完成一个报告。—____Igoouttoplay,mum?—No,you_____.Youshoulddoyourhomeworkfirst.A.Might;wouldn’tB.May;hadbetternotC.Must;mustn’tD.Need;mustn’t课

5、堂练兵2.—WhereisEmma?—Ican’tsayforsurewheresheis,butshe_______beoutshopping.A.canB.shouldC.mustD.may3.Theroomisinaterriblemess;it_________cleaned.A.can’thavebeenB.couldn’tbeC.mayhavebeenD.wouldbe4.There______beanydifficultyaboutpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool.A.mustn’t

6、B.shan’tC.shouldn’tD.needn’t5.Thisumbrellalookslikemine,butitisn’t.Whose______itbe?A.mustB.canC.mayD.might6.—MayIsitbesideyou,sir?—Sorry,you______.Look,mydaughteriscoming.A.can’tB.mustn’tC.needn’tD.shouldn’t7.Peter______bereallydifficultattimeseventhoughheisanicepersoningeneral.A.shallB.shouldC.

7、canD.must8.You______behungryalready—youhadlunchonlytwohoursago!A.wouldn’tB.can’tC.mustn’tD.needn’t9.Althoughthis______soundlikeasimpletask,greatcareisneeded.A.mustB.mayC.shallD.should10.—Shelooksveryhappy.She______havepassed