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1、情态动词Modalverbs常用的情态动词can（could）may（might）shall（should）will（would）must（must）dare（dared）need（need）havetooughttobeabletousedtoThefeature（特点）ofthemodalverbs:1.情态动词本身有词义,但词义不完全.2.不能单独作谓语,只能和动词原形一起构成谓语. 3.情态动词没有人称和数的变化(除“haveto”).4.没有不定式、V-ing、V-ed形式.Hecan/could/must/may/might/shall/should/need/dar
2、e/dared/will/would/oughtto/usedto+workinthatfactory.Hehastogohomenow.Hehadtolookafterhissickmother.在情态动词的使用中,我们要注意以下考点:1.情态动词的基本用法。2.情态动词+have+P.P的用法。3.情态动词在虚拟语气中的用法。4.情态动词的反意疑问句的用法。5.情态动词特殊短语的用法。6.情态动词表推测的用法归纳1.表“能力”Canyouliftthisheavybox?Icouldn’tunderstandwhathesaidatall.注意：beableto表示经过一番努
3、力后,成功完成某一具体事情时，用was/wereableto.且有多种时态.Thefirespreadthroughthehotelveryquicklybuteveryone_____getout．A.hadtoB.wouldC.couldD.wasabletocan,could的用法2.表“请求,许可”could用来表示请求的时候比can更委婉HesaidIcouldborrowhisbike.CouldIuseyourbike?—CouldIborrowyourdictionary?—Yes,ofcourseyou____．A.mightB.willC.canD.shoul
4、d3.表“可能性”can,could用在疑问句中表推测,表示可能性Whatonearthcanthismean?can,could用在否定句中表推测，翻译成“不可能”Wethoughtthestorycouldn’tbetrue.can,could用在肯定句中表示理论上的可能性，“有时候可能”Asahumanbeing,anyonecanmakeamistake.ItisusuallywarminChengduinMarch,butit___berathercoldsometimes.A.canB.mustC.wouldD.should1.Mary____beinParis，fo
5、rIsawherinthetownonlyafewminutesago．A．mustn'tB．can'tC．shouldn'tD．maynot2.MyMP4playerisn’tinmybag.Where____Ihaveputit?A.canB.mustC.shouldD.would1.表“询问”(might比用may更客气.)MayI…?(=CanI…?)MightI…?(=CouldI…?)MayIborrowyourbook?may与might用法—MayIpickaflowerinthegarden?—________.A.No,youneedn’tB.Not,plea
6、se.C.No,youmustn’tD.No,youwon’t注意：mayI…?的答语.肯定:Yes,youmay.否定:No,youmustn’t(语气强硬)No,youmaynot.或No,you’dbetternot.2.表“许可”YoumaytaketheboythereHesaidthatImightusehistelephone.—MightIwatchTVaftersupper?—Yes,you________.A.mayB.mustC.mightD.could3.表推测，表示主观上的推测，“可能，也许”，不用于疑问句,可能性小。might比may的可能性更小She
7、maynotlikethisplace.I’mafraidhemightnotlikethisplace.Peter＿＿＿＿comewithustonight，butheisn’tverysureyet．A．mustB．mayC．canD．will1.must表示主观上的必须，应该，没有时态变化。YoumustdoeverythingasIdo.注意:—MustIfinishmyhomeworktoday?—Yes,youmust. —No,youneedn’t./No,youd
