【語法】情態(tài)動詞must-完整版課件

情態(tài)動詞mustLead-inLookandreadBoysmustwearwhiteshirts.Allstudentsmustwearsummeruniforms.Girlsmustwearwhitedresses.Allstudentsmustwearredscarves.Lead-inDrawandwriteBoys_____wearwhiteshirtswiththelongsleeves,greytrousers,red________,greysocksandblackshoes.mustjacketsLead-inDrawandwriteGirls_____wearwhiteblouseswiththelongsleeves,grey_____,redjackets,greysocksandblackshoes.mustskirtsPresentation情態(tài)動詞后接動詞原形;沒有人稱和數(shù)的變化;不能單獨(dú)作謂語,與后面的動詞共同作謂語;其否定形式在后面直接加not。Modalverbs情態(tài)動詞Presentationcan/cannotmay/maynotmust/mustnotModalverbs情態(tài)動詞Presentationmust的用法:1.must表示必須

Youmustdoyourhomeworkfirst.2.must表示一定(肯定性推測)

Hemustbeathome.Presentationmust的用法:3.must可用來表示發(fā)生了與說話人愿望相反的事，常翻譯為“偏偏，偏要”。

Lookatthetime.Mustyouplaythepianosolate?

Presentationmustnot的用法:1.mustn’t表示禁止(不準(zhǔn)；不允許)

Youmustn’tsmokehere.2.以must開頭的疑問句，其否定回答要用needn’t.--MustIcleantheclassroomnow?--Yes,youmust.No,youneedn’t.PracticeWhatdothesignsmean?Doyouknow?Youmustnotcycle.Youmustnotenter.PracticeWhatdothesignsmean?Doyouknow?Youmustbecareful.Youmustturnleft.PracticePlayagame:LookandguessGuessingGameYoumustn'teat!PracticeGuessingGameYoumustn'tsmoke.PracticeGuessingGameYoumustbequiet.PracticePractice直擊中考【2011.北京】

Ifyou____smoke,pleasegooutside.A.canB.shouldC.mustD.may

【答案】C【解析】must可以用來表示發(fā)生了與說話愿望相反的事，常翻譯為“偏偏、偏要”。Practice直擊中考【2010.浙江】

“You____haveawrongnumber,”shesaid.“There’snooneofthatnamehere.”A.needB.canC.mustD.would

【答案】C【解析】must在肯定句中表示推測，翻譯為一定。Practice直擊中考【2012.廣東】---Must

he

come

to

sign

this

paper

himself?

---Yes,

he

_____.

A.

need

B.

must

C.

may

D.

will

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