初中英语情态动词的基本用法讲解

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初中英语情态动词的基本用法讲解1.can 1)表示能力,能够,会Twoeyes cansee more than one. 两只眼比一只眼看得清。

Ican swim我会游泳2)表示可能Jim went toBeijing ,so he can’tbe at home.He can’t haveen oughmoney for a newcar. 他不可能有足够的钱买新车。

3)表示允许。

可以CanI have a look at yournew pen? 我可以看一看你的新钢笔吗?回答:Yes,of course/Yes youcan.No,you can’t4)比较委婉客气地提出问题或陈述看法。

Canyou lend me a hand?帮我一把好吗?2.Could1.can的过去式,能,会I______swim when Iwas three yearsold.2.情态动词,--可以比can客气,委婉Could you help me?----Yes,of course/sorry,Ican’t.Iambusy. 3.May1)表允许,可以,比can ,could 更客气委婉You may takewhatever you like.你喜欢什么就拿什么。

Hetold me thatI might smoke in the room.他告诉我可以在房间里抽烟。

May (Might) Iask for a photo ofyour baby? 我可以要一张你宝宝的照片吗?在回答以may引起的问句时,多避免用这个词,而用其它方式,如Yes, please. /Certainly. / Pleasedon’t ./You’d better not. / No, you mustn’t.等,以免显得太严峻或不客气。

2)表可能(事实上)。

可以指过去时间,也可以指现在时间,但语气更加不肯定。

He may be athome.他可能在家。

She may not know about it.她可能不知道这件事。

They might be having ameeting,butI’m not sure. 他们有可能在开会,不过我不肯定。

3. must1)表示义务。

意为“必须”(主观意志)。

Mustn’t不准We must do everything step bystep. 我们一切都必须循序渐进地做。

You mustn’t talkto her like that.你不可能那样对她说话。

--Mustwe handin our exercise—books now?我们现在就要交练习本吗?--No,youneedn’t. / No, you don’thave to. 不必。

(这种情况下,一般不用mustn’t)2)表示揣测。

意为“想必、准是、一定”等,只用于肯定句。

Hemust beill.He lookssopale. 他准是病了。

他的脸色苍白。

She’swearing a diamond necklace. Shemust have a lotof money.她戴着钻石项链,一定很有钱。

1. -Mum,may I watchTV now?-Sure,butyou ________ help me with m yEnglish.A. canB.mayC. must D. could2. -________I download thearticleagain?-No,youneedn't.A. Shall B.Will C. Must D. Can3. -Canyou goskatingwith us this afternoon?-Sorry,I can't. I________ take care of my little sister at home.A. canB.may C.would D. have to4.-Must I hand inmy exercise book today?-No,you________.A.can'tB. needn'tC. mustn'tD. won't5. -May Ihavea wordwithyou?-No,you ________.I'm busy today.A.needn't B.wouldn't C. don't have toD. can't6.-________I have your English name,please?-Yes,Helen. H-E-L-E-N.A. Must B. May C. WillD. Need7. -Whois the boyoverthere?Is it John?-No,it ________be him. John is muchtaller.A. mustn'tB.maynot C. can't D. needn't8.-Canyou play Frisbee, Jay?-Yes, I________.It's easy.A.mustB. can C.needD. may9.-Youmust come back every month. -Yes,I ________.A. will B.must C.should D. can10. She ________know theanswer, butI'mnot sure.A.maybe B.may be C. may D.must11. -Must wecleanthe roomrightnow?-No,you____.You_____clean itafter lunch.A.needn't;mayB. needn't;mustC. Mustn't; can D.mustn't;may12.John________ come to see us tonight,but heisn't verysureyet.A. mayB. canC. hasto D. must13. Children ________ play with fire.A.mustn'tB. can't C. shouldn'tD. needn't14. -________ I comein, Mr Green?-Yes,comein, please.A.Must B.Need C. Will D. May15.-Must I finishthework today?-No,you ________.You________finish ittomorrow.A. mustn't;mayB.can't;canC. needn't;may D. needn't;must1( )1 John___ cometosee us tonight,but heisn't very sure yet.A.mayB.can C. has toD. must( ) 2 They ___dowellin the exam.A.can be able toB.beabletoC. canable to D. are able to( ) 3 -MayItake this book out?-No,you___.A. can't B. may not C. needn'tD.aren't( ) 4 You___goandsee a doctor at once because you're gota fever.A. canB. must C. dare D.would() 5 -Can you speak Japanese?-No,I____.A.mustn't B. can't C.needn'tD.maynot2( ) 1 -He___be in the classroom, I think.-No, he___ be inthe classroom.I saw him go homeaminute ago.A.can; maynot B.must; may not C.may;can't D. may;mustn't( ) 2-Shall Igetone morecake foryou, Dad?-Thanks, but you___, I'vehadenough.A. may notB. must not C. can't D. needn't( ) 3Even thetop students in our class can't work out thisproblem,so it___be very difficult. A.may B. must C. can D. need ( ) 4He isn't atschool.I thinkhe ___ be ill.A. canB.shall C. must D. has to() 5___ Itake this one? A.May B. Will C.Are D.Do3 ( )1 The children___playfootball on the road.A. can't B.can C.mustn't D.must()2You___be late for schoolagain nexttime.A.mustn't B.needn't C. don't have to D. don't needto()3-Must I do my homeworkat once?-No, you___.A.needn't B. mustn't C. can't D. may not4() 1Hisarm is all right. He___go and seethe doctor.A. has not toB. don't have to C.haven't to D.doesn't haveto() 2 He had to giveup theplan,___he?A. didB. didn'tC. doesD. doesn't() 3 They had to walk here, ___ they?A. mustn'tB. didC.didn't D.hadn't5 ( ) 1 He hadbetter stay here, ___ he?A. didn'tB. don't C. hadn'tD. isn't( ) 2You'd better___late nexttime.A. not tobeB.not beC.won't beD. don'tbe( ) 3 You'dbetter ___ your hair ___ oncea month.A. had;cutB. had; cutted C.have;cut D.have; cutted() 4You___ask thatmanover there. Maybe he knowsthe way.A.had better nottoB. hadnot betterC.hadbetter D.hadbette rnot6( ) 1-Shall wego andvisitthe History Museum nextSunday?A. Hereyou are B. Sorry, I can't C.Yes,please D. Let metry () 2 -Why don'tyou askMiketo gowith us? -Thanks, ___.A. I will B.I won't C. lean D.I may()3-___ Itake the newspaper away?-No,you mustn't.You____read it only here.A. Must; canB. May;canC. Need;mustD.Must; must7 ( )1Excuse me. ___youplease pass me that cup?A. DoB. ShouldC. Would D.Must() 2 ___ youlike to have another try?A.Could B. Will C.WouldD. Do( ) 3-Would you like togo boating withus?-Yes, ___.A. I'd likeB. IwantC.I'd like toD. I do8 ( ) 1You___ worryabout your son. He will get well soon.A. needn't B.can'tC.mustn't D. haveto( ) 2 The poor man needs our help,___ he?A. need B. needn't C.does D. doesn't( ) 3 -Must wedo ourhomeworkfirst?-No, you___. You mayhave arestfirst.A. mustn't B.needn't C.may not D.can't1.ADABB2.CDBCA 3.CAA 4.DBC 5.ABCC6.CAB7.CCC 8.ADB「答案与解析」1. C.这组对话的意思是:"妈妈,我现在可以看电视吗?""当然,但你必须帮我学英语。