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1、GrammarGrammar：Modal verbsModal verbs 情態(tài)動(dòng)詞情態(tài)動(dòng)詞情態(tài)動(dòng)詞（modal verbs)：表示說(shuō)話人的語(yǔ)氣或情態(tài)，如請(qǐng)求、命令、愿望、能力以及可能性等。英語(yǔ)的情態(tài)動(dòng)詞有：can/could may/might must shall/should will/would need have to 能夠可能必須應(yīng)該意愿敢需要不得不+動(dòng)詞原形 肯定 否定 縮寫否定 can can not cant couldcould not couldnt maymay not /mightmight not mightnt must must not mustnt shoul

2、dshould not shouldnt needneed notneedntShall一般只能用于第一人稱。I shall think it over and Let you know my idea.我將考慮一下此事，然后告訴你我的想法。情態(tài)動(dòng)詞情態(tài)動(dòng)詞不能單獨(dú)作謂語(yǔ)動(dòng)詞不能單獨(dú)作謂語(yǔ)動(dòng)詞，只能與，只能與動(dòng)動(dòng)詞原形一起詞原形一起做謂語(yǔ)，沒(méi)有人稱和數(shù)的變做謂語(yǔ)，沒(méi)有人稱和數(shù)的變化。化。A bird can fly.Fish cant live without water.You must hand in your homework at once.You mustnt talk loudly

3、 in public.cancanmaymaymustmust詞義詞義詞義詞義肯定肯定肯定肯定 否定否定否定否定疑疑疑疑問(wèn)問(wèn)問(wèn)問(wèn)回答回答回答回答能夠能夠能夠能夠(表能力表能力表能力表能力)可以可以可以可以(表允許表允許表允許表允許)必須必須必須必須主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +can+can+動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +may+may+動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +must+must+動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +cannot/+cannot/cant+cant+動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +may+may not

4、+not+動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +must+must not/mustnt+not/mustnt+動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形動(dòng)詞原形Can+Can+主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +動(dòng)詞原形？動(dòng)詞原形？動(dòng)詞原形？動(dòng)詞原形？May+May+主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +動(dòng)詞原形？動(dòng)詞原形？動(dòng)詞原形？動(dòng)詞原形？Must+Must+主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +動(dòng)詞原形？動(dòng)詞原形？動(dòng)詞原形？動(dòng)詞原形？Yes,Yes,主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +can.+can.No,No,主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +cant.+cant.Yes,Yes,主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +may.+may.No,No,主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +may+may

5、not.not.Yes,Yes,主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +must.must.No,No,主語(yǔ)主語(yǔ)主語(yǔ)主語(yǔ) +neednt.neednt.在口語(yǔ)中可用在口語(yǔ)中可用在口語(yǔ)中可用在口語(yǔ)中可用cancan代替，但代替，但代替，但代替，但maymay更禮貌。更禮貌。更禮貌。更禮貌。1.My elder brother _(1.My elder brother _(能能能能)drive a cardrive a car.否定句：否定句：否定句：否定句：一般疑問(wèn)句：一般疑問(wèn)句：一般疑問(wèn)句：一般疑問(wèn)句：肯定回答：肯定回答：肯定回答：肯定回答：否定回答：否定回答：否定回答：否定回答：就劃線部分提問(wèn)：就劃線部分提問(wèn)：

6、就劃線部分提問(wèn)：就劃線部分提問(wèn)：PracticePractice canMy elder brother cannot/cant drive a car.Can your elder brother drive a car?Yes,he can.No,he cant.What can your elder brother do?2.You _(2.You _(可以可以可以可以)leave)leave nownow.否定句：否定句：否定句：否定句：一般疑問(wèn)句：一般疑問(wèn)句：一般疑問(wèn)句：一般疑問(wèn)句：肯定回答：肯定回答：肯定回答：肯定回答：否定回答：否定回答：否定回答：否定回答：就劃線部分提問(wèn)：就劃線

7、部分提問(wèn)：就劃線部分提問(wèn)：就劃線部分提問(wèn)：PracticePractice mayYou may not leave now.May I leave now?Yes,you may.No,you may not.When may I leave?3.Lily _(3.Lily _(必須必須必須必須)go to)go to the librarythe library.否定句：否定句：否定句：否定句：一般疑問(wèn)句：一般疑問(wèn)句：一般疑問(wèn)句：一般疑問(wèn)句：肯定回答：肯定回答：肯定回答：肯定回答：否定回答：否定回答：否定回答：否定回答：就劃線部分提問(wèn)：就劃線部分提問(wèn)：就劃線部分提問(wèn)：就劃線部分提問(wèn)：Pra

8、cticePractice mustLily mustnt go to the library.Must Lily go to the library?Yes,she must.No,she neednt.Where must Lily go?A.A.用用用用must(not),may(not),can(not)must(not),may(not),can(not)填空：填空：填空：填空：1.I dont understand this word._ I use your 1.I dont understand this word._ I use your dictionary?-Yes,pl

9、ease use it.dictionary?-Yes,please use it.2.The traffic light is turning red.We _ stop.2.The traffic light is turning red.We _ stop.3.You _ borrow two books at a time.3.You _ borrow two books at a time.4.Tom _ play table tennis,but he _ play 4.Tom _ play table tennis,but he _ play football.football.

10、5.Doctor,_ I take much medicine?5.Doctor,_ I take much medicine?-No,you neednt.But you _ drink a lot of water.-No,you neednt.But you _ drink a lot of water.6.Tom is good at drawing.He _ draw wonderful 6.Tom is good at drawing.He _ draw wonderful pictures.pictures.7.You _ smoke here.Its dangerous.7.Y

11、ou _ smoke here.Its dangerous.8.-May I turn on the TV?No,you _.My dad is sleeping.8.-May I turn on the TV?No,you _.My dad is sleeping.Test YourselfTest YourselfMay/Canmustmay/cancancantmustmustcan mustnt/cannot/may notmay notcantTest YourselfTest YourselfB B.單項(xiàng)選擇單項(xiàng)選擇單項(xiàng)選擇單項(xiàng)選擇：1.-_ I ask you a questio

12、n?-Sure1.-_ I ask you a question?-Sure A.May B.Do C.Should D.AmA.May B.Do C.Should D.Am2.Can I go to the park,Mum?2.Can I go to the park,Mum?-Certainly.But you _ be back by six oclock.-Certainly.But you _ be back by six oclock.A.A.can B.may C.will D.mustcan B.may C.will D.must3._ you dance?We need s

13、ome more dancers for the talent show.3._ you dance?We need some more dancers for the talent show.A.A.May B.Can C.Must D.ShouldMay B.Can C.Must D.Should4.Im afraid I need a pair of glasses.I _ hardly see the words 4.Im afraid I need a pair of glasses.I _ hardly see the words on the blackboard.on the

14、blackboard.A.A.can B.must C.may D.shouldcan B.must C.may D.should5.You _ cross the road now.You have to wait until the light 5.You _ cross the road now.You have to wait until the light turns green.turns green.A.dont B.didnt C.wont D.mustntA.dont B.didnt C.wont D.mustntTest YourselfTest Yourself6.Mus

15、t I answer this question in English?-No,you _.6.Must I answer this question in English?-No,you _.A.A.mustnt B.cant C.neednt D.shouldntmustnt B.cant C.neednt D.shouldnt7.Alice,please be quiet!The others _ hear clearly.7.Alice,please be quiet!The others _ hear clearly.A.A.cant B.mustnt C.shouldnt D.ma

16、y notcant B.mustnt C.shouldnt D.may not8.I am afraid I _ go with you.I am very busy these days.8.I am afraid I _ go with you.I am very busy these days.A.A.may not B.cant C.mustnt D.shouldntmay not B.cant C.mustnt D.shouldnt9.I am going to bed.I _ get up early tomorrow morning.9.I am going to bed.I _ get up early tomorrow morning.A.A.can B.must C.should D.May can B.must C.should D.May10.May I smoke here?10.May I smoke here?-No,you _ only do that in the smoking room.-No,you _ only do that in the smoking room.A.can B.cant C.must D.mustntA.can B.cant C.must D.mustnt