情态动词答案版

情态动词1.can的基本用法：⑴表示体力或智力上的能力，即“能够，会”，可与beableto转换。例：HecanspeakEnglish.=HeisabletospeakEnglish.

—Canyouplaybasketball?

—No,Ican’t.

如果表示将来具备的能力，要用willbeableto。例：IfIhaveagoodsleep,Iwillbeabletodotheproblem.

⑵表示许可，主要用于口语，书面语一般用may。例：—Canwegohomenow,please?

—No,youcan’t.

Youcanonlysmokeinthisroom.

Youcan’tkeepthelibrarybooksformorethanamonth.

⑶表示“可能”，与may同义，但一般用在疑问句中。例：Whatcanhepossiblywant?在否定句中，否定形式can’t表示推测“不大可能”。例：Anybodycanmakemistakes.

Thenewscan’tbetrue.

与第一、二人称连用时，还可以就可能的解决问题的方式或可能的行为提出建议。在这里，也可用could使语气婉转。例：Can/Couldwemeetagainnextweek?

下周我们可以再见面吗？—Whatshallwedo?

我们怎么办呢？—Wecan/couldtryaskingLucyforhelp.

——我们可以请露茜帮忙试试看。Youcan/couldhelpmewiththecooking.

你可以帮我做饭。【热身练习】（）1.—IsthemanMr.Yang?—It______behim.HehasgonetoChangshaforameeting.A．needn’t B．mustn’t C．can’t（）2.Whatanamazingrobot!It________cookmorethan5,000dishes.A．shall B．needC．must D．can()3．—Thetallmanwithglassesovertherelookslikeourmathteacher.—It_________behim.Hehasgoneabroad.A．maynot B．mustn’t C．can’t D．needn’t()4．—DidyouspendmuchtimedrivingbacktoyourhometownduringtheNationalDayholiday?—Yes.Therewastoomuchtraffic.What’smore,drivingonthehighway________beverydangerous,soyou________betoocareful.A．must;should B．can;can’t C．might;must D．may;can’t()5．—CouldIgotothemoviethisweekend,Dad?—Yes,you____.Butyouhavetoebackbeforenine.A．shall B．must C．need D．can（）6．—Whoisthemanoverthere?IsitMr.Li?

—No,it______behim.Mr.Liismuchtaller.A.mustn’t

B.maynoC.can’t

D.needn’t（）7．—Thelakeissaidtobedry.Isthattrue?—It_______.Look,somekidsareswimminginit.A.mustbetrue B.can’tbetrue C.maynotbetrue（）8．—Listen!IsProfessorJohnsongivingareportinthehall?—No,itbehim.HehasgonetoJapan.A.needn’t B.maynot C.mustn’t D.can’t（）9．—Canyouplaythepiano？—Yes,I_______.Ioftenpracticeitonweekends.A.needn’tB.needC.can’tD.can（）10.—IsJessicagivingusaspeechthisevening?—No,it________beher.She________toJapan.A.mustn’t;hasgoneB.mustn’t;hasbeenC.can’t;hasgone D.can’t;hasbeen（）11.—MrSmithmusthavebeentoyourhomethismorning.—No,he______,becausehedidn’tknowmyaddress.A.couldn’t B.can’t C.mustn’t D.maynot（）12.—IsLucyknockingatthedoor?—No.It________beLucy.SheisinJapannow.A.needn’tB.mustC.can’t（）13.ItisusuallywarminmyhometowninMarch,butit_______berathercoldsometimes.A.mustB.canC.shouldD.would（）14.They_________dowellintheexam.A.canbeabletoB.beabletoC.canabletoD.areableto（）15.MayIhaveawordwithyou？No,you_____.I'mbusytoday.A.needn'tB.wouldn'tC.don'thavetoD.can't（）16.Whoistheboyoverthere？IsitJohn？No,it________behim.Johnismuchtaller.A.mustn'tB.maynotC.can'tD.needn't（）17.CanyouplayFrisbee,Jay？Yes,I________.It'seasy.A.mustB.canC.needD.may2.may的基本用法:⑴表示“许可”，用can比较口语化。例：Youmay/caneifyouwish.

如果你想来，你就来。Youmaynotpickflowersinthispark.

本公园内不许摘花。（maynot表示按规定不许可，如果用mustn’t则表示说话人不许可。）—MayIsmokehere?

我可以在这里抽烟吗？—No,youmustn’t.

不行。（mustn’t表示明确的禁止。）⑵肯定句中表示推测，“可能”。例：Itmayraintomorrow.

明天可能会下雨。Thenewsmaynotbetrue.

这个消息可能不会是真的。注意：如果在疑问句中表示“可能”，通常用can。例：Canitbetrue?

那会是真的吗？Whocanhebe?

他究竟是谁呢？⑶【注意】：—MayI/we……？—Yes,youmay./—No,youmustn’t.

【热身练习】（）1.—Sandy,isMrLiintheteachers’officenow?—Iamnotsure.He___bethere.A．must B．can’tC．mustn’t D．may（）2.We________haveagraduationceremonynextweek,butI’mnotsure.A．must B．need C．might（）3.—Where'sJane?—I'mnotsure.She______inthelibrary.A.mightbe B.mustbeC.can'tbe()4．—They________beleavingforYunnannextmonth.ButI’mnotsure.—Wecanaskyourfatheraboutit.can B．must C．might D．should（）5．—WhatisyourmothergoingtodothisSaturday?—I’mnotsure.She_____gotoseemygrandmother.A.can B.must C.may（）6.—Excuseme,wherearewegoingtohaveourclassmeeting?—I’mnotsure.Askourmonitor,please.Heknow.A.canB.mayC.needD.shall（）7.—____________Iborrowthesemagazines?—Sorry,onlythemagazinesovertherecanbeborrowed.A.MustB.WouldC.May D.Need（）8.John_________etoseeustonight,butheisn'tverysureyet.A.mayB.canC.hastoD.must（）9..________IhaveyourEnglishname,pleaseYes,Helen.HELEN.A.MustB.MayC.WillD.Need（）10.She________knowtheanswer,butI'mnotsure.A.maybeB.maybeC.mayD.must（）11..John________etoseeustonight,butheisn'tverysureyet.A.mayB.canC.hastoD.must（）12.____Iein,MrGreen？Yes,ein，please.A.MustB.NeedC.WillD.May3.must的基本用法:⑴表示必须，强调说话人的主观意志。例：Imustgonow,orI’llbelate.

Youmustbeherebyteno’clock.

【注意】：表示“必须“时，must的否定式为needn’t，或don’thaveto,而不是mustn’t。也就是：—MustI/wedoitnow？—Yes,youmust.—No,youneedn’t/don’thaveto.

当must提问时，肯定回答用must。否定回答用needn’t和don’thaveto例：—MustIgowiththem?

—No,youneedn’t，或don’thaveto.

⑵表示推测，一般只用于肯定陈述句,表示非常肯定。例：Shedidn’tlookatme.Shemustbeangry.

她不朝我看，一定是生气了。HeisgoodatEnglish.Hemustknowtheword.

他英语好，准知道这个词。YoumustbeMr.Jones.

想必您就是琼斯先生吧【mustVShaveto】①must和haveto都有”必须”的含义，但侧重点不同：must强调说话者主观(自己）的看法。haveto强调客观（外力作用）的需要，也可以翻译为“不得不”。例如：ImustgotoschoolandlearnsomeKnowledge.我必须会学校上课学一些知识。（自己要回）Ihavetogotoschoolbecausetheholidayisover.假期结束了我不得不回学校上课了。②must没有人称和数的变化，而haveto有动词单三形式：hasto和动词过去式：hadto将来时：willhavetomustnot=mustn’t表示禁止…….（）1.Thebiggestchallengeweallfaceistopreventfurtherenvironmentaldisasters.We________takeactionbeforeitistoolate.A．can B．must C．may D．might（）2.Accordingtothenewtrafficrules,people________wearahelmetwhenridinganebike.A．might B．may C．can D．must（）3.—You________takephotoshere!Lookatthesign.Itsays“Nophotos”.—Sorry,Iwon’t.A．must B．need C．mustn’t D．needn’t（）4.Sitdown,please.You________betiredafterstandingforsolong.A．could B．can C．must D．might（）5.Don’tyouknowpassengers________smokeonhighspeedtrains？A．needn’t B．mustn’t C．wouldn’t D．couldn’t（）6.—Accordingtotheschoolrules,thestudents________gettheirearspierced.—Ithinkthat’sright.Studentsshouldpaymoreattentiontotheirstudy.A．mustn’t B．can C．needn’t D．should（）7.—MayIparkmycarhere?—No,you________.Can’tyouseethesign?A．mustn’t B．wouldn’tC．needn’t D．couldn’t()8.Thisbook________beJim’s.Hisnameisonit.A．must B．might C．can’t D．mustn’t()9．—Look!Peopleoutsidearewearingthickcoats.—Theweather________beverycold.A．might B．must C．can't（）10．—Susanhasboughtalargehousewithaswimmingpool.—It______beveryexpensive.Ineverevendreamaboutit.A.mustB.mightC.can’tD.shouldn’t（）11.—Dowehavetofinishourhomeworkthisafternoon?—Yes,you________.A.must B.can C.may D.need（）12.—MayIwatchTVforawhile？—No,you_______.Youhavetofinishyourhomeworkfirst.A.shouldn’tB.needn’tC.mustn’tD.won’t（）13.It’sthelibrary!Soyou________knowshoutingisnotallowedhere.A.can B.must C.need D.may（）14.—Anothercupofcoffee?—No,thanks.I_____beoff.Maryiswaitingforme.A.canB.mayC.mustD.might（）15.Ifthetrafficlightisred,you________crosstheroad.It’sverydangerous.A.don’tB.mustn’tC.needn’tD.wouldn’t（）16.—OurclasswontheEnglishspeakingcontest.—Congratulations!You_______beveryproudofit.A.canB.needC.wouldD.must（）17.Ifthetrafficlightisred,you________crosstheroad.It’sdangerous.A.don’tB.needn’tC.mustn’tD.wouldn’t（）18.Eventhetopstudentsinourclasscan'tworkoutthisproblem,soit_______beverydifficult.A.mayB.mustC.canD.need（）19.Mum，mayIwatchTVnow？Sure,butyou________helpmewithmyEnglish.A.canB.mayC.mustD.could（）20.________Idownloadthearticleagain？No,youneedn't.A.ShallB.WillC.MustD.Can（）21.Children________playwithfire.A.mustn'tB.can'tC.shouldn'tD.needn't4.should

1）表责任或义务，意为“应该”，用于各种人称。

Youshouldbepolitetoyourteachers.

你对老师应该有礼貌。2）表推测，意为“想必一定、照说应该、估计”等。

Thefilmshouldbeverygoodasitisstarringfirstclassactors.

这部新电影是一流演员主演的，估计拍得很好。【热身练习】（）1.—Lilyisintelligentandhardworking,she_____dowellinthesingingpetition.—Sure.Shewasborntobeasinger.should B.might C.can’t知识点总结：情态动词用法例句can能,会,表示能力IcanspeakEnglish.我会说英语。可能；允许Canyouhelpme

？

你可以帮我吗？can't表推测（0%）Hecan'tbeLiMing,forIjustsawhimgoout.他不可能是李明，因为我刚看见他出去了。不能，不会,不允许

I

can't

go

with

you.我不能和你一道去。must必须Nurseshavetowearauniform.

护士必须穿制服。一定，肯定(表猜测的可能性100%）Hemustbeahardworkingstudent.他一定是个用功的学生。mustn't千万不要，禁止，不允许（危险的、规则和法律的常用）Youmustn'tcrossthestreet.你千万不要横穿马路。need需要常用于疑问句Need

she

go

with

us?

\o"真人发音"她需要跟我们一起去吗？needn't不必，不需要We

have

plenty

of

time.

So

I

needn't

drive

quickly.我们有足够的时间，所以我不必开车开得太快。may可以（猜测的可能性20%80%）MayIein?

我可以进来吗？可能（常用于肯定句）Hemaybeatschool.他可能在学校。haveto不得不(客观）Hehastolookafterhismother,不得不照顾他的母亲，因为他的母亲病了。don'thaveto不需要Youdon'thavetobeearly.你不需要早到。表推测意义及用法肯定句must意为“一定”，表示有把握的推测may/might/could意为“也许，可能”，表示没有把握的推测否定句can’t/couldn’t意为“不可能”表示没有把握的否定推测/maynot/mightnot意为“不可能”表示有把握的否定推测疑问句can/could意为“可能”表示推测不同时态中表推测的句子情态动词+动原表示对现在事情的推测，ThebookmustbeKate’s.情态动词+be+动词ing表示对正在发生的事情的推测,Shemustbedoingsportsnow.情态动词+have+过去分词表示对过去的事情的推测,Hemusthaveknownthebadnews.There+情态动词+be+主语+现在分词表示：“可能/或许/一定会有...在做”Theremightbesomeboyssinging.【特殊回答】情态动词用于疑问句肯定回答否定回答Musthedohishomework?他必须做作业吗？Yes,hemust.是的，他必须。No,heneedn’t.No,hedoesn’thaveto.不，他不需要。Needshegohome?她需要回家吗？Yes,shemust.是的，她必须。No,sheneedn’t./No,shedoesn’thaveto.不，他不需要。MayIborrowyourbook?我可以借你的书吗？Yes,youmay.是的，你可以。No,youcan’t/mustn’t.不，你不能。【综合练习】（）2.【2020•黄石】—Mom,____IwatchTVtonight?—Sure,butyou____finishyourhomeworkfirst.A．can,mustn't B．may;could C．may;can't D．can;must（）16.【2020•鄂州】—Whosetextbookisit?IsitJenny's?—No,it________beJenny's.Look,Helen'snameisonthecover.Ithinkit________beHelen's.A.can't;mustB.mustn't;mustC.can't;mayD.mustn't;may（）13.（2021·贵州）—MustIwashmyclothesatonce,mom?—No,you________.You________washthembefore5:00p.m.A．needn’t;mayB．mustn’t;may C．needn’t;need D．mustn’t;must()20．—Look,theladyinred____beourEnglishteacher.—No,she____be.Sheisintheofficenow.A．must,can’t B．may,must C．can,mustn’t D．can’tcan()21．—________Iswimhere?—I’msorry.Children_______swimalonehere.A．must;can’tB．can;mustn'tC．may;mustn’tD．shall;can’t（）10.（2021·四川）—Must