說明：needn’t表示“不必”；mustn’t表示“不準(zhǔn)”；shan’t用在二、三人稱中表示“堅(jiān)決不準(zhǔn)”，含有強(qiáng)烈的警告和命令的語氣。shouldn’t表示“非常不可能”或“應(yīng)該不會”。情態(tài)動詞練習(xí)

2.There_________beanydifficultyaboutpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool.（上海卷）A.mustn’t B.shan’t C.shouldn’tD.needn’tC3.It’snearly7:00.Jack____behereatanymoment.A.must B.need C.should D.can4.Johnny,you_______playwiththeknife,you_______hurtyourself.A.won’t,can’t B.mustn’t,may C.shouldn’t,must D.can’t,shouldCBmust+be表示“肯定會”；need+be表示“需要在”；should+動詞原形表示“非常有可能”；can表示可能性只用在否定和疑問句中。前句表示“你不能玩刀”，此處的“不能”并非表示“能力”，而是表示“允許”，所以只能用“mustn’t”；后句表示“可能會傷著你自己”，故用may。5.----AreyoucomingtoJeff’sparty?----I’mnotsure.I_____gototheconcertinstead.A.must B.would C.should D.might6.Mr.Bushisontimeforeverything.How_____itbethathewaslatefortheopeningceremony?A.can B.should C.may D.mustDA此句的關(guān)鍵在于“I’mnotsure”，既然不能肯定，只能是一種“可能性”。此句的意思為：“Bush先生總是很守時(shí)，他怎么可能在出席開幕儀式時(shí)遲到呢？“can在否定句或疑問句中表示“可能性”。7.---IsJohncomingbytrain?---Heshould,buthe______not.Helikesdrivinghiscar.A.must B.can C.need D.may8.---Iheardtheywentskiinginthemountainslastwinter.---It_________truebecausetherewaslittlesnowthere.

A.maynotbe B.won’tbe C.couldn’tbe D.mustn’tbeDC此句的關(guān)鍵是“Helikesdrivinghiscar.”can和may都可用于否定句中，can’t表示“根本不可能”，語氣很強(qiáng)；maynot表示“也許不可能”，語氣較弱。couldn’t的語氣比can’t弱。7.---IsJohncomingbytrain?---Heshould,buthe______not.Helikesdrivinghiscar.A.must B.can C.need D.may8.---Iheardtheywentskiinginthemountainslastwinter.---It_________truebecausetherewaslittlesnowthere.A.maynotbe B.won’tbe C.couldn’tbe D.mustn’tbeDC此句的關(guān)鍵是“Helikesdrivinghiscar.”can和may都可用于否定句中，can’t表示“根本不可能”，語氣很強(qiáng)；maynot表示“也許不可能”，語氣較弱。couldn’t的語氣比can’t弱。

Tomoughtnotto_______meyoursecret,buthemeantnoharm.A.havetold B.tellC.betelling D.havingtold2.ItoldSallyhowtogethere,butperhapsI_______forher.A.hadtowriteitout B.musthavewrittenitout C.shouldhavewrittenitout D.oughttowriteitoutACoughtto相當(dāng)于should；此句的關(guān)鍵是“Hemeantnoharm”，顯然指的是過去的事。shouldhavewritten意指“本該寫但實(shí)際上并沒有寫”。3.---Therewerealready5peopleinthecarbuttheymanagedtotakemeaswell.---It________acomfortablejourney.A.can’tbe B.shouldn’tbe C.mustn’thavebeen D.couldn’thavebeen4.Susan_______writtenareportlikethis.A.canhave B.mustn’thave C.can’thave D.oughttonothaveDC此句談?wù)摰氖沁^去的經(jīng)歷，故A、B不合題意；must表示判斷和推測只能用在肯定句中。該句的意思為Susan不可能寫出這樣的報(bào)告來。oughttohavedone的否定式為oughtnottohavedone。5.Jack____yet,otherwisehewouldhavephonedme.A.mustn’thavearrived B.shouldn’thavearrivedC.can’thavearrived D.needn’thavearrived6.---IstayedatahotelwhileinNewYork.---Oh,didyou?You______withBarbara.A.couldhavestayed B.couldstay C.wouldstay D.musthavestayedCA此句的關(guān)鍵是后半句，“otherwisehewouldhavephonedme”，此處為省略了條件句的虛擬語氣，表示“如果到了他會打電話給我的”，由此可見，他肯定沒到。此句并不表示判斷，而是一個虛擬語氣。

1.Ithasbeenannouncedthatcandidates____remainintheirseatsuntilallthepapershavebeencollected.A.can B.will C.may D.shall2.It’snearly7:00.Jack_____behereatanymoment.A.must B.need C.should D.canDC該句的意思為：“通知說所有的考生必須坐在位置上直到考卷收完了才能離開?！笨忌谖恢蒙喜荒苡谩澳軌?、將要、可以”來表示。而shall在第二、三人稱里面表示一種“命令、警告、承諾”等。3.---WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.---They__________bereadyby12:00.A.can B.should C.might D.need4.Youcan’timaginethatawell-behavedgentleman_____besorudetoalady.A.might B.need C.should D.wouldBC此句應(yīng)是店主對顧客的承諾。should與how;why等表示疑問或否定的詞連用時(shí)，用來表示一種驚奇的心情，意思為“居然、竟然”

1.---ShallItellJohnaboutit?---No,you______.I’vetoldhimalready.A.needn’t B.wouldn’t C.mustn’t D.shouldn’t2.---CouldIcallyoubythefirstname?---Yes,you__________.A.will B.could C.may D.mightAC此句的關(guān)鍵是“I’vetoldhimalready”，由此可見，你就不必再對他說了。在回答“CouldI…”這類婉客氣的請求時(shí)，只能回答“Yes,youcan或may”。不能用could或might。3.---Willyoustayforlunch?---Sorry,_____.Mybrotheriscomingtoseeme.A.Imustn’t B.Ican’t C.Ineedn’t D.Iwon’t4.----Writetomewhenyougethome.----__________.A.Imust B.Ishould C.Iwill D.IcanBC此句的關(guān)鍵是“Mybrotheriscomingtoseeme.”所以我不能在這兒吃飯。在回答對方的請求或命令時(shí)，應(yīng)該用“Yes,Iwill.”而不能使用would或should。

1.Iwonderhowhe_______thattotheteacher.A.daretosayB.daresayingC.notdaresayD.daredsay2.Thefirespreadthroughthehotelveryquicklybuteveryone______getout.A.hadto B.would C.wasableto D.could3.Whenhewasthere,he_______gotothatcoffeeshopatthecornerafterworkeveryday.A.would B.should C.hadbetter D.mightDCA注意比較dare和need的兩種詞性的不同用法。注意比較could與wasableto的用法區(qū)別。would在此處表示過去慣常的動作。（一）1.He__________havecompletedhiswork;otherwise,hewouldn’tbeenjoyinghimselfbytheseaside.(北京)A.should B.must C.wouldn’t D.can’t2.Hepaidforaseat,whenhe______haveenteredfree.(山東)A.could B.would C.must D.need3.—I'vetakensomeoneelse'sgreensweaterbymistake.—It______Harry's.Healwayswearsgreen.(廣東)A.hastobeB.willbeC.mustn'tbeD.couldbe

B

A

D4.—DoyouknowwhereDavidis?Icouldn’tfindhimanywhere. —Well.He

havegonefar—hiscoat’sstillhere.(湖北)A.shouldn’t B.mustn’t C.can’t D.wouldn’t5.IfI

plantodoanythingIwantedto,I’dliketogotoTibetandtravelthroughasmuchofitaspossible.(湖北)A.would B.could C.hadto D.oughtto6.—Lucydoesn’tmindlendingyouherdictionary.—She______.I'vealreadyborrowedone.(湖南)A.can'tB.mustn'tC.needn'tD.shouldn't

C

B

C7.—Catherine,Ihavecleanedtheroomforyou. —Thanks.You

it.Icouldmanageitmyself.（福建） A．needn’tdo B．needn’thavedoneC．mustn’tdo D．shouldn’thavedone8.—Tomisneverlateforwork.Whyisheabsenttoday? —Something________tohim.(江西)A.musthappen B.shouldhavehappenedC.couldhavehappenedD.musthavehappened9.John,lookatthetime.___________youplaythepianoatsuchalatehour?(全國3) A.Must B.Can C.May D.Need

B

D

A10.Tom,you

leaveallyourclothesonthefloorlikethis!(全國1)A.wouldn’tB.mustn’tC.needn’t D.maynot11.There_________beanydifficultyaboutpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool.(上海)A.mustn’tB.shan’t C.shouldn’tD.needn’t12.TheWorldWideWebissometimesjokinglycalledtheWorldWideWaitbecauseit_______beveryslow.(浙江) A.should B.must C.willD.canB

C

D13.Iwasonthehighwaywhenthiscarwentpastfollowedbyapolicecar.They____atleast150kilometersanhour.(重慶)A.shouldhavebeendoingB.musthavebeendoingC.couldhavedoneD.wouldhavedone14.I_______havebeenmorethansixyearsoldwhentheaccidenthappened.(天津)A.shouldn'tB.couldn'tC.mustn'tD.needn't15.Helen______goonthetripwithus,butsheisn’tquitesureyet.(安徽)A.shallB.mustC.mayD.can

B

B

C16.Thiscakeisverysweet.You__________alotofsugarinit.(遼寧) A.shouldput B.couldhaveput C.mightputD.musthaveput17.—ThewomanbiologiststayedinAfricastudyingwildanimalsfor13yearsbeforeshereturned.—Oh,dear!She_______alotofdifficulties!(江蘇)A.maygothroughB.mightgothroughC.oughttohavegonethroughD.musthavegonethrough

D

D（二）1.—What’sthename?—Khulaifi._______Ispellthatforyou?(北京)A.ShallB.WouldC.CanD.Might2.There'snolighton-they______beathome.(全國1)A.can'tB.mustn'tC.needn'tD.shouldn't3.Asyouworkedlateyesterday,you______havecomethismorning.(全國2)A.mayn’tB.can’tC.mustn’tD.needn’t

A

A

D4.Wehopethatasmanypeopleas-possible_______joinusforthepicnictomorrow.(全國3)A.need B.mustC.shouldD.can5.Ifitwerenotforthefactthatshe_______sing,Iwouldinvitehertotheparty.(福建)A.couldn’tB.shouldn’tC.can’tD.mightnot6.—Musthecometosignthispaperhimself?(廣東)—Yes,he

.A.needB.mustC.mayD.will

D

C

B7.Someaspectsofapilot’sjob__________beboring,andpilotsoften____________workatinconvenienthours.(湖南)can;havetoB.may;can C.haveto;may D.oughtto;must8.—IthinkI’llgiveBobaring.

—You_______.Youhaven’tbeenintouchwithhimforages.（江蘇）

A.will B.may C.havetoD.should9.Theweatherturnedouttobefineyesterday．I——thetroubletocarrymyumbrellawithme．(江西)shouldhavetakenB.couldhavetakenC.needn'thavetakenD.mustn'thavetakenA

D

C10.—MayIsmokehere?—Ifyou____,chooseaseatinthesmokingsection.(山東)A.shouldB.couldC.mayD.must11.—IsJackondutytoday?（(四川)）

—It

______

behim.It’shisturntomorrow.

A.mustn’tB.won’tC.can’t

D.needn’t12.—CouldIhaveawordwithyou,mum?（浙江）—Ohdear,ifyou________.A.can B.mustC.mayD.should

D

C

B13.Youknowheisnotgoingtoletusleaveearlyifwe___gettheworkdone.（上海春）A.can't B.maynot C.shouldn'tD.mustn't14.________fired，yourhealthcareandotherbenefitswillnotbeimmediatelycutoff.(湖北)A.WouldyoubeB.ShouldyoubeC.CouldyoubeD.Mightyoube15.We

haveprovedgreatadventurers,butwehavedonethegreatestmarchevermadeinthepasttenyears.（天津）A.needn'tB.maynotC.shouldn’tD.mustn't’

AB

B

(三)1.—How’syourtouraroundtheNorthLake?Isitbeautiful?—It________be,butitisnowheavilypolluted.(全國I)A.willB.wouldC.shouldD.must2.—Guesswhat!IhavegotAformytermpaper.(上海)—Great!You______readwidelyandputalotofworkintoit.A.must B.shouldC.musthaveD.shouldhave3.Theteacher_______havethoughtJohnsonwasworthitorshewouldn'thavewastedtimeonhim,Isuppose.(安徽)A.shouldB.canC.wouldD.must

C

C

D4.Incrowdedplaceslikeairportsandrailwaystations,you___takecareofyourluggage.(北京)A.canB.mayC.mustD.will5.MyMP4playerisn’tinmybag.Where

Ihaveputit?(福建)A.canB.mustC.shouldD.would6.Thebiggestproblemformostplants,which________justgetupandrunawaywhenthreatened,isthatanimalsliketoeatthem.(湖南)A.shan’tB.can’tC.needn’tD.mustn’t

C

A

B7.—Shelooksveryhappy.She______havepassedtheexam.(江蘇)—Iguessso.It’snotdifficultafterall.A.should B.could C.mustD.might8.—Whereismydictionary?IrememberIputithereyesterday.—You

itinthewrongplace.(江西)A.mustputB.shouldhaveputC.mightputD.mighthaveput9.Asaresultoftheseriousflood,two-thirdsofthebuildingsinthearea

.(陜西)needrepairing B.needstorepair C.needsrepairing D.needtorepair

C

D

A

10.Itoldyourfriendhowtogettothehotel,butperhapsI

havedrivenherther.(陜西)A.could B.mustC.might D.should 11.Thebosshasgiveneveryoneaspecialholiday,sowe

gotoworktomorrow.(上海春)A．can’tB．mustn’t C．needn’t D．shouldn’t12.一Whatdoesthesignoverthereread?一“Noperson________smokeorcarryalightedcigarette，cigarorpipeinthisarea．”(四川)A．will B．may C．shall D.must

D

C

C13.—Mycat’sreallyfat.—You______havegivenhersomuchfood.(浙江)A.wouldn’tB.couldn’tC.shouldn’tD.mustn’t14.—Whatdoyouthinkwecandoforouragedparents?—You________doanythingexcepttobewiththemandbeyourself.(重慶)don’thaveto B.oughtn’tto C.mustn’t D.can’t15.—TurnofftheTV,Jack.____yourhomeworknow?—Mum,justtenmoreminutes,please.(遼寧)A.ShouldyoubedoingB.Shouldn'tyoubedoingC.Couldn'tyoubedoingD.Willyoubedoing

C

A

B（四）1.ItisusuallywarminmyhometowninMarch,butit_____berathercoldsometime.（福建）A.mustB.canC.shouldD.would2.Youdon’thavetoknowthenameoftheauthortofindabook.You_____findthebookbythetitle.（湖南）A.mustB.needC.canD.would3.—I’msorry.I______atyoutheotherday.—Forgetit.Iwasabitoutofcontrolmyself.（江蘇）shouldn’tshoutB.shouldn’thaveshoutedC.mustn’tshoutC.mustn’thaveshouted

B

CB4.Thankyouforallyourhardworklastweek.Idon’tthinkwe_____itwithoutyou.（山東）A.canmanageB.couldhavemanagedC.couldmanageD.canhavemanaged5.Whatapity.Consideringhisabilityandexperience,he____better.（江西）A.needhavedoneB.musthavedoneC.canhavedoneD.mighthavedone6.Peter______bereallydifficultattimeseventhoughhe’sanicepersoningeneral.（遼寧）A.shallB.should C.can D.must

B

D

C7.Liza___wellnotwanttogoonthetrip---shehatestraveling.(全國II)A.willB.canC.mustD.may8.—Whatsortofhousedoyouwanttohave?Somethingbig?—Well,it_________bebig--that’snotimportant.（陜西）

A.mustn’tB.needn’tC.can’tD.won’t9.Althoughthis____soundlikeasimpletask,greatcareisneeded.(四川)A.mustB.mayC.shallD.should

D

C

B10.You______behungryalready—youhadlunchonlytwohoursago!（浙江）A.wouldn’tB.can’tC.mustn’tD.needn’t11.Johnpromisedhisdoctorhe________notsmoke,andhehassmokedeversince.（北京）A.mightB.shouldC.couldD.would12.She______haveleftschool,forherbikeisstillhere.（天津）A.can’tB.wouldn’tC.shouldn’tD.needn’t

B

D

A（五）1.Somepeoplewhodon’tliketotalkmucharenotnecessarilyshy；they

justbequietpeople.（安徽）A.mustB.mayC.shouldD.would2.Oneofthefewthingsyou____sayaboutEnglishpeoplewithcertaintyisthattheytalkalotabouttheweather.（北京）A.needB.mustC.shouldD.can3.ButforthehelpofmyEnglishteacher,I

thefirstprizeintheEnglishWritingCompetition.（福建）A.wouldnotwin B.wouldnothavewonC.wouldwinD.wouldhavewon

B

D

B4.—It’stheoffice!Soyou

knoweatingisnotallowedhere.—Oh,sorry.（湖南）A.must B.will C.may D.need5.Whatdoyoumean,thereareonlytentickets?There

betwelve.（海南）A.shouldB.wouldC.willD.shall6.It_____havebeenTomthatparkedthecarhere,asheistheonlyonewithacar.（上海）A.mayB.canC.mustD.should7.—Idon’tcarewhatpeoplethink.—Well,you_______（四川）A.couldB.wouldC.shouldD.might

A

A

C

C8.Thisprinterisofgoodquality.Ifit_______breakdownwithinthefirstyear,wewouldrepairitatourexpense.（天津）A.wouldB.shouldC.couldD.might9.—Hi,Tom.Any

idea

where

Jane

is?—She_____in

the

classroom.I

saw

her

there

just

now.（重慶）A.shall

be

B.should

have

beenC.must

be

D.might

have

been10.Ican’tleave.ShetoldmethatI

stayhereuntilshecomesback.（全國2）A.canB.mustC.willD.may11.Hedidnotregretsayingwhathedidbutfeltthathe

itdifferently.（江蘇）A.couldexpress

B.wouldexpressC.couldhaveexpressed

D.musthaveexpressed

B

C

B

C（六）1.Jackdescribedhisfather,who_______abraveboymanyyearsago,asastrong–willedman（安徽）wouldbeB.wouldhavebeenC.mustbe D.musthavebeen2.You

buyagift,butyoucanifyouwantto.（湖南）

A.must B.mustn't C.haveto D.don'thaveto 3.Iha