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《初一情态动词语法讲解.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、Grammar：Modalverbs情态动词情态动词（modalverbs)：表示说话人的语气或情态，如请求、命令、愿望、能力以及可能性等。英语的情态动词有：can/couldmay/mightmustshall/shouldwill/wouldneedhaveto能够可能必须应该意愿敢需要不得不+动词原形肯定否定缩写否定cancannotcan’tcouldcouldnotcouldn’tmaymaynot/mightmightnotmightn’tmustmustnotmustn’tshouldshouldnotshoul
2、dn’tneedneednotneedn’tShall一般只能用于第一人称。IshallthinkitoverandLetyouknowmyidea.我将考虑一下此事，然后告诉你我的想法。情态动词不能单独作谓语动词，只能与动词原形一起做谓语，没有人称和数的变化。Abirdcanfly.Fishcan’tlivewithoutwater.Youmusthandinyourhomeworkatonce.Youmustn’ttalkloudlyinpublic.canmaymust词义肯定否定疑问回答能够(表能力)可以(表允许)必须
3、主语+can+动词原形主语+may+动词原形主语+must+动词原形主语+cannot/can’t+动词原形主语+maynot+动词原形主语+mustnot/mustn’t+动词原形Can+主语+动词原形？May+主语+动词原形？Must+主语+动词原形？Yes,主语+can.No,主语+can’t.Yes,主语+may.No,主语+maynot.Yes,主语+must.No,主语+needn’t.在口语中可用can代替，但may更礼貌。1.Myelderbrother______________(能)driveacar.否定
4、句：一般疑问句：肯定回答：否定回答：就划线部分提问：PracticecanMyelderbrothercannot/can’tdriveacar.Canyourelderbrotherdriveacar?Yes,hecan.No,hecan’t.Whatcanyourelderbrotherdo?2.You__________________(可以)leavenow.否定句：一般疑问句：肯定回答：否定回答：就划线部分提问：PracticemayYoumaynotleavenow.MayIleavenow?Yes,youmay.
5、No,youmaynot.WhenmayIleave?3.Lily_________________(必须)gotothelibrary.否定句：一般疑问句：肯定回答：否定回答：就划线部分提问：PracticemustLilymustn’tgotothelibrary.MustLilygotothelibrary?Yes,shemust.No,sheneedn’t.WheremustLilygo?A.用must(not),may(not),can(not)填空：1.—Idon’tunderstandthisword._____
6、______Iuseyourdictionary?--Yes,pleaseuseit.2.Thetrafficlightisturningred.We____________stop.3.You______________borrowtwobooksatatime.4.Tom__________playtabletennis,buthe_________playfootball.5.—Doctor,_____________Itakemuchmedicine?--No,youneedn’t.Butyou____________
7、__drinkalotofwater.6.Tomisgoodatdrawing.He______________drawwonderfulpictures.7.You_______________smokehere.It’sdangerous.8.--MayIturnontheTV?–No,you_________.Mydadissleeping.TestYourselfMay/Canmustmay/cancancan’tmustmustcanmustn’t/cannot/maynotmaynotcan’tTestYourse
8、lfB.单项选择：1.--_______Iaskyouaquestion?--SureA.MayB.DoC.ShouldD.Am2.—CanIgotothepark,Mum?--Certainly.Butyou________bebackbysixo’clock.canB.m
