情态动词基本用法及练习

can/could（beableto）may/mightmust/havetoneedwill/wouldshall/shouldhadbetter特征：1.只有情态意义，情态动词+do；2.没有人称和数的变化；3.直接构成否定句和一般疑问句；4.只有现在式和过去式情态动词基本用法can&could&beabletoA.能力：Bobcanplaythepianoverywell.（Bobisabletoplaythepianoverywell)Icouldrideabikeattheageoften.(Iwasabletorideabikeattheageoften)B.许可：---Can/CouldIborrowyourbike?---Certainly./Yes,youcan.---No,youcan’t.may&mightA.许可：---MayIsithere?---Yes,youmay/youcan.(Ofcourse)---No,youcan’t/mustn’t.B.可能性：Hemay/mightcometomorrow.mustA.必须，应该（主观愿望）Wemuststudyhard.B.禁止：（否定式）Youmustn’tplayinthestreet.C.疑问句及回答Mustwefinishtheworkbefore5:00?Yes,youmust./No,youneedn’t/don’thaveto.haveto/hasto必须；不得不(客观要求）A.Hehastogetupearlyeverydaybecausehishomeisfarfromhisschool.B.---DoyouhavetolearnEnglish?---Yes,Ido./No,Idon’t.need(情态动词;行为动词；名词）A.情态动词(疑问句/否定句):NeedIwatertheflowers?Yes,youmust./No,youneedn’t.B.行为动词needsth.tododoing(被动含义）Theroomneedscleaning.=Theroomneedstobecleaned.C.名词：Thereisnoneedforustodotheworknow.will&wouldA.Iwillhelphimifheasksme.B.--Pleaselookafteryourself.–Iwill.--Don’tbelateagain.–Sorry,Iwon’t.C.--Will/Wouldyoupleasedo…?--Ok,Iwill./Sorry,Ican’t.D.---Will/Wouldyoupleasenotdo…?---Sorry,Iwon’tdothatagain.E.--Will/Would/Doyouminddoing…?---Ofcoursenot./Certainlynot./No,Idon’t.---I’msorry,but…/I’mafraidIdo.F.Wouldyouliketodo…?Sure,I’dliketo.shall&shouldA.提建议Shallwevisitthezootomorrow?Let’sgohiking,shallwe?B.应该；应当：Weshouldlearnfromeachother.Youshouldn’tbotherhimnow.hadbetter：最好（提建议）A.Shehadbetterfinishtheworknow.B.Youhadbetternotbelateforschool.dare:敢，敢于(情态动词&实义动词）A.Nobodydaredaskhimabouthispast.B.Iwonderhowhedarestosaysuchthings.情态动词表猜测的用法：A.Itmustbetrue.(反意疑问句）B.Canitbetrue?Whocanitbe?Itcan’tbetrue.C.Itmay/might/couldbetrue.=Maybeitistrue.D.对进行动作的猜测：must/maybedoing对过去情况的推测:must/mayhavedoneE.情态动词在therebe句型中的运用：Theremay/must/usedtobesomeonelivingintheroom.情态动词的被动语态：情态动词+bedoneThemistakesmustbecorrectedintime.情态动词的系表结构：情态动词+be+adj./n….ThespellingmustbecorrectbecauseI’velookeditupinthedictionary.Weshouldbestrictwithourselves.Shemustbeateacher.1.ManypeoplecanspeakEnglishinChina.English________________bymanypeopleinChina.2.Wemustcleanourclassroomeveryday.Ourclassroom__________________everyday.3.Everyoneshouldobeythetrafficrules.Thetrafficrules__________________byeveryone.4.Wemaycatchfishintheriver.Fish_________________intheriver.5.Theforeignerscan’tunderstandthisword.Thisword___________________bytheforeigners.canbespokenmustbecleanedshouldbeobeyedmaybecaughtcan’tbeunderstood练习一：情态动词表猜测。1.---WhereisJacknow?---I’mnotsure.He_____beintheteachers’office.A.shallB.mayC.canD.must2.---What______ournewteacherbelike?---Ihearthatwewillhaveaverystrictteacher.A.mustB.shouldC.can’tD.can3.Hurryup!Dick________forusatthetrainstation.A.mustwaitB.mustbewaitingC.canwaitD.canbewaiting4.---There_____manyanimalsinthepark.---You’reright.A.canbeB.maybeC.mayhaveD.maybe练习二：情态动词综合练习1.---Willyoupleasestayherefortheparty?---Sorry,I____.I’llhavetogotoanimportantmeeting.A.mustn’tB.needn’tC.can’tD.won’t2.–MayItakethisseat?--Yes,you______.A.shouldB.needC.mustD.can3.–Youmustcomebackeverymonth.---Yes,I_____.A.mustB.needC.willD.can4.Yesterdayitrainedheavilywhenschoolwasover.We____stayinourclassroom.A.shouldB.mustC.hadtoD.need5.You’dbetter___himthenews,orhe’llbesadder.A.tellB.nottotellC.nottellD.totell6.---What’sthetime?---It’sstillearly.You__worryaboutthetime.A.maynotB.don't’havetoC.can’tD.don'tneed7.Helen,you____feedthemonkeys.It’stoodangerous.A.wouldn’tB.maynotC.mustn’tD.needn’t8.Idon’tthinkacomputer______thinkbyitself.It_____betoldwhattodo.A.can,mustB.must,canC.need,shouldD.should,will9.---____youliketogofishingwithmenow?---Sorry,I’mtoobusy.ButI____befreeanhourlater.AWill,mayB.Would,mightC.Will,mustD.Would,need