情态动词专项复习

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1、RevisionforModalVerbs九年级1中考英语专项复习——情态动词概念：情态动词是表示情态意义的动词，他表示说话人的语气和情态，它不能单独作谓语，必须与实义动词一起构成谓语，情态动词没有人称和数的变化，过去式通常表示更客气、更委婉。IcanspeakEnglish.HecanspeakEnglish.TheycanspeakEnglish,too.Canyouhelpme?/Couldyouhelpme?2表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词是情态动词。情态动词3初中阶段必须掌握的情态动词：cancouldmaymightwillwouldmusthaveto

2、needhadbettershould所有的情态动词后面都接动词原形.Eg:Icanswim.Hehastogonow.41.can表能力，能够,会,Eg:1.IcanspeakEnglishwell.2.Can表允许、请求Canyoutellmehowtostartthemachine?3,can用来表示否定推测和疑问推测Eg:1.Thatcan’tbeourEnglishteacherbecauseshehasgonetoShanghai.2.Canitbetrue?4.could为can的过去式，用法与can类似，常用于过去时中；could还可用于现在时中表示委婉客气，相当于can；

3、could也可表示惊讶怀疑，不相信，52.May允许，请求，可以Eg:Youmaygowithme.---MayIborrowyourpen?---Yes,youmay.No,you_______________推测，可能性，可能，也许Itmayrain.mustn’t.此外,may表示可能时注意和maybe的区别maybe可能(副词),不能做谓语,常在前面Eg:Maybeyouknowtheoldman.=Youmayknowtheoldman.may常放在句中,和动词原形一起做谓语1)Idon’tknow._______hecantellyou.2)Idon’tknow.He____

4、__tellyou.Maybemay63.must必须mustn’t严禁,禁止,不许Eg:Imustlearnhowtowork.Youmustn’tplayinthestreet.---MustIfinishtheworknow?---Yes,youmust.No,youneedn’t/don’thaveto(不必）.此外must用于肯定推测,表示肯定是Eg:Thebookmustbelongtohimbecausewecanseehisnameonit.74.need(需要)既可做实义动词也可做情态动词实义动词needtodosth需要做某事Eg:Ineedtobuyabighouse

5、.---Doyouneedtobuyabighouse?---Yes,Ido.No,Idon’t.Heneedstoborrowamap.---Doesheneedtoborrowamap?2)情态动词needdosth需要做某事Eg:Ineedbuyabighouse.85.haveto不得不Eg:It’seleveno’clock.Ihavetogonow.Hehastofinishtheworkfirst.请注意:Idon’thavetogonow.Hedoesn’thavetofinishtheworkfirst.haveto和must的区别:haveto表示客观因素Eg:Wear

6、everygladattheparty,butit’s11,sowehavetoleavenow.must表示主观因素Eg:Wemuststudyhardtofindagoodjobforourselves.96.You’dbetterdosth你最好做某事Eg:You’dbetterbuythebook.You’dbetternotdosth你最好不要做某事You’dbetternotrunintheclassroom.10考点一：情态动词基本含义can(could)能，会may(might)可以，可能will(would)将，会，愿意must必须haveto不得不need需要sbnee

7、dtodosth,sthneeddoing.should应该hadbetter最好hadbetter(not)dosth111.-______youspeakJapanese?(北京2008）-No,Ican’tA.CanB.MustC.MayD.Should2.You______stopwhenthetrafficlightisred.(山西）A.canB.mayC.mustD.need3.LiLeican’tgohi