初中英语情态动词课件

情态动词复习can,could1)表示能力（体力、知识、技能）。Canyouskate?Canyouliftthisheavybox?Marycanspeakthreelanguages.Shecouldreadpoemswhenshewasthree.体力技能知识过去的能力能2)表示请求和允许--Can/MayIgonow?--Yes,youcan.--No,youcan’t.--不，不行或--No,youmustn’t.--不，不准--CouldIcometoseeyoutomorrow?(婉转语气，不表过去时）此时可与may互换可以may,might表示请求和允许--MayIsmokeinthisroom?--Yes，youmay.--No,youcan’t.或No，youmustn’t.此时可与can互换可以must1)表示必须、必要。是说话人的主观看法Youmustcomeintime.--Mustwehandinourexercisebookstoday?--Yes,youmust.--No,youneedn’t.--No，youdon’thaveto.必须must与haveto区别must译为“必须”而haveto多表示客观存在的环境所限,即客观要求(无奈)而为之，多译为“不得不干某事”Imustcleantheroombecausetherearetoodirty.Ihavetoleaveschoolbecausemyfamilyispoornow.IfIbuythatcar,I’llhavetoborrowsomemoney.（无人强迫）（无耐）表示推测、可能性might---may---must也许、可能、一定1．Hemightbeverybusynow.2．Hemaybeverybusynow.3.Hemustbeverybusynow.表示推测的否定形式只有can’t.不可能或肯定不1．You’reTom’sgoodfriend,soyou_____knowwhathelikesbest.2---AreyougoingtoBeijingbyplane?---Iamnotsure.I______takeatrain.Need1.需要做..needtodo2.needn’t不必Youneedn’tworryaboutit.四、shall与should1)shall用于第一人称，征求对方的意见。shallIcleantheroomforyou?2）should表示应该做…Youshouldn‘twatchTVeveryday。1.---______youplaygolf?---No.ButIcanplaytabletennis.A.CanB.MayC.MustD.Should2.---CouldIgotothemoviethisweekend,Dad?---Yes,you______.Butyouhavetocomebackbeforenine.A.shallB.mustC.needD.can3.---IsJohncomingbytrain?---Heshould,buthe______not.Helikesdrivinghiscar.A.mustB.canC.mayD.need4.---CouldIuseyourpen?---Ofcourseyou_____.A.mustB.mayC.canD.need5.---Willyoustayherefordinner?---Sorry,I______.Ihavesomethingimportanttodo.A.don’tB.didn’tC.needn’tD.can’t6.---Isyourbrotherplayingcomputergames,Ted?---He______dothatbecausethecomputerdoesn’twork.A.maynotB.can’tC.mustn’tD.needn’t7.---David,isthatmanyourheadteacher?---It______behim.He’sthetallestinourschool.Butthatmanisshort.A.mustn’tB.can’tC.needn’tD.won’t8.John,youneedn’tdoyourworktoday,you_____doittomorrowifyou’retired.A.mustB.mayC.can’t9.---AreyougoingtoBeijingbyplane?---SoIamnotsure.I______takeatrain.A.shouldB.mayC.mustD.will10.---_____Iswiminthatriver?---No,you_______.It’sdangeroustoswiminit.A.Must;can’tB.Can;maynotC.May;mustn’t11.---Mom,____Iplaycomputergames?---Yes,youcan.Butyouhavetofinishyourhomeworkfirst.A.mustB.mayC.willD.need12.---MustIstayathomeandtakecareofher?---No,you______.A.mustn’tB.won’tC.can’tD.needn’t13.---MustIgoanddoitnow?---No,you______.Westillhavetwomoredays.A.shoudn’tB.can’tC.needn’tD.won’t14.It’snearlyseveno’clock.Jack_____bebackhomeatthemoment.A.mustB.needC.couldD.can15.---MayIdotherestoftheworktomorrow?---Yes,ofcourse.You____finishittoday.A.mustB.mustn’tC.needn’t16.Youhavealreadytriedyourbest,soyou_____worryaboutthematter.A.can’tB.needn’tC.mustn’tD.couldn’t17.Youlooktirednow.You______stayathomeandhavearest.A.hadtoB.hadbetterC.wouldliketoD.wouldrather