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时间:2020-08-04
《高中英语情态动词详解(必修三unit1-2)课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、情态动词Modalverbs常用的情态动词can(could)may(might)shall(should)will(would)mustdare(dared)needhavetooughttobeabletousedtoThefeatures(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/ne
2、ed/dare/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.情态动词表推测的用法。3.情态动词+havedone的用法。1.表“能力”can,could的用法Ican/amabletoswim.Icould/wasabletoclimbatreewhenIwasachild.Iwillbeabletoswimnextweek.The
3、firespreadthroughthehotelveryquicklybuteveryonewasabletogetout.1.can表示现在的能力(ability)2.could表示过去的能力3.beableto表能力,可用于多种时态4.beableto强调成功地做了某事2.表“请求,许可”(permission)could用来表示请求的时候比can更委婉CanyouhelpmewithmyEnglish?HesaidIcouldborrowhisbike.CouldIuseyourbike?—CouldIborrowyourdictiona
4、ry?—Yes,ofcourseyou____.A.mightB.willC.canD.should3.表“可能性”(possibility)P5,4can,could用在肯定句中表示理论上的可能性,“经验之谈”Asahumanbeing,anyonecanmakeamistake.can,could用在疑问句中表推测,表示可能性Canshebeintheclassroom?can,could用在否定句中表推测,翻译成“不可能”Wethoughtthestorycouldn’tbetrue.1.Mary____beinParis,forIsawh
5、erinthetownonlyafewminutesago.A.mustn'tB.can'tC.shouldn'tD.maynot2.MyMP4playerisn’tinmybag.Where____Ihaveputit?A.canB.mustC.shouldD.would(08湖南28)Youdon’thavetoknowthenameoftheauthortofindabook.Youfindthebookbythetitle.A.must B.need C.can
6、 D.would答案Ccan表示“可以,能够”。(08浙江11)Youbehungryalready—youhadlunchonlytwohoursago!A.wouldn’t B.can’t C.mustn’t D.needn’t答案B解析 句意为:你不可能饿了,你两个小时之前才吃的午饭!can’t指不可能;mustn’t表猜测时,不能用于否定句;Needn’t指没有必要。(08福建24)Itisusuallywarminmyhometow
7、ninMarch,butitberathercoldsometimes.A.must B.can C.should D.would答案B解析must必然,一定;can可能;should应该;would(过去)将,总会。本题提供的语境是“有时可能会……”。Peterbereallydifficultattimeseventhoughhe’sanicepersoningeneral.A.shall B.should
8、 C.can D.must答案C解析 句意为:虽然彼得总体上来说是一个好人,
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