高中情态动词难点解析课件 23页

情态动词难点讲解modalverbs1策划：《学生双语报》\n情态动词表示推测不表示推测cancouldmaymightshallshouldmustwillwouldoughttohavetodare(daren’t)need(needn’t)usedto2策划：《学生双语报》\n情态动词有一定的意义，但没有人称和数的变化，不能独立使用，它和后面的动词构成谓语．只作情态动词的　　can/could,may/might,　　　　　　　　oughtto，must可情态可实义的　　need,dare/dared可情态可助动词的　shall/should,will/would相当于情态动词的　haveto,usedto3策划：《学生双语报》\n1.can与beableto均可表示某人做某事的能力，常可互换。例如：I'mnotableto[can't] explain this.Hewasableto[could]speakFrenchverywell.1.can,could和beableto的用法4策划：《学生双语报》\ne.g.We’llbeabletofinishtheworksoon.Ihaven’tbeenabletoseethefilm.2.can只用于现在时和过去时(could)。be able to可以用于各种时态。could用于表示泛指过去的能力。e.g.I could read when I was four.5策划：《学生双语报》\n.3.表示特定的某一过去能力或表示成功地做了某事时，只能用was/were able to，相当于managedtodosth或succeededindoingsth 不能用could。e.g.Hewas able toescapefrom Europe beforethe war broke out.6策划：《学生双语报》\n构成下列特殊句式：①cannot/cannever...too...或cannot...enough“无论怎么……也不过分；越……越好；非常……”。Onecannotbetoocareful.越认真越好。Icannotthankyouenough.我对你感激不尽。②cannothelpdoing.../Wecouldn'thelplaughingwhenweheardthefunnystory.7策划：《学生双语报》\nIcan’tbelievesuchagentlemanshouldbesorudetotheoldI’msurprisedthatheshouldeatsolittleeveryday.2.should可表示“居然，竟然”。8策划：《学生双语报》\nNaturally,afterItoldherwhattodo,mydaughtermustgoanddotheopposite.Don’tinterruptme，John.________youforcemetotellyouthetruthatthemoment?A.MightB.MustC.ShouldD.WouldB3.must表示“偏偏”9策划：《学生双语报》\n1.shall用于第二、三人称陈述句中，表示说话人给对方的命令，警告，允诺或威胁。e.g.1)Youshallgowithme.(命令)2)YoushallhavethebookwhenIfinishit.(允诺)3)Heshallbepunished.(威胁)4)Heshallbesorryoneday.Itellyou.(警告)4.shall10策划：《学生双语报》\n2).用于条约，规定，规章等文件中，表示一种义务，多用于第三人称中。.—Whatdoesthesignoverthereread?—“Noperson________smokeorcarryalightedcigarette，cigarorpipeinthisarea.”A.willB.mayC.shallD.mustC11策划：《学生双语报》\nwould表过去对过去一种回想的心情。usedto表过去常常（现在与过去不一样）“过去常常”e.g.Heusedtobeaquietboy.Wewouldstayupallnighttalkingaboutourfuture.5.would/usedto12策划：《学生双语报》\nNeedIdo…?Yes,youmust.No,youneedn’t/don’thaveto.dare&need情态动词实义动词dare否，疑，条darenotdo否,疑don’tdaretodo　　　　don’tdaredo不用于肯定句肯：daretodoneed否，疑needn’tdo(don’t)needtodo13策划：《学生双语报》\n判断dare/need是实义动词还是情态动词1) Shedarestoanswerthesequestions.2) Weshoulddaretothink,speakanddo.实义动词3)Hedarednotgothereatnight.4)Youneednotpay—itisfree.情态动词14策划：《学生双语报》\n练习1. Youmustpaythemoney,butyou____dosoatonce.A.mustn’t B.darenotC.needn’t  D.don’tneed.2. She____killthesnake.Sheisafraidofit.A.don’tdare   B.daresnottoC.darenot  D.daretoCc15策划：《学生双语报》\n表示推测——情态动词的重要用法.肯定的推测可能的推测否定的推测疑问的推测must对现在对现在正在进行对过去情态动词may,mightcan’t,couldn’tcan,could+V.+be+doing+havedone+V.+havedone+bedoing可以用not表示“可能不”+V.+havedone+bedoing+V.+havedone+bedoing16策划：《学生双语报》\n1.Idon'tknowwheresheis,she_______(be)inWuhan.2.Atthismoment,ourteacher________________(mark)ourexampapers.3.Theyhaveboughtanewcar.They_____________(have)alotofmoney.4.Theroadiswet.It________________(rain)lastnight.maybemustbemarkingmusthaverainedmusthave17策划：《学生双语报》\n5.Philip________________________hurtseriouslyinthecaraccident.6.---Lindahasgonetowork,butherbicycleisstillhere.---She_____________________(go)bybus.7.Mike________________(find)hiscar,forhecametoworkbybusthismorning.8.Yourmother______________________(look)foryou.may(might)havebeenhurtmay(might)havegonecan’thavefoundmusthavebeenlooking18策划：《学生双语报》\n9.It________(be)Mary.Shehasfallenill.can’tbe10.Isawhimjustnow,sohe___________________(go)abroad.couldn’thavegone19策划：《学生双语报》\n情态动词考题:1.---Didthetrainarriveintime?----No.It_______twohoursago.A.musthavearrivedB.oughttohavearrivedC.mustarriveD.oughttoarrive2."MustIdrivetohishouseandpickupthechildren?""No,."A.youshouldn'tB.youmightnotC.youneedn'tD.youmustn'tBC20策划：《学生双语报》\n3.Wedidn'tseeTomatthemeetingyesterday.Heit.A.mustn'thaveattendedB.cannothaveattendedC.needn'thaveattendedD.wouldhavenotattendedB21策划：《学生双语报》\n4.You________suchalongcomposition.Theteacheronlyaskedfor300words.Youhavewritten600.A.mustn’thavewrittenB.couldn’thavewrittenC.needn’thavewrittenD.donothavetowriteC22策划：《学生双语报》\n5.Thereissomeoneknockingatthedoor.itbeTom?A.can B.must C.should D.oughtto6.Twoyearsago,myhusbandboughtmeabicycle.Ifyouliveintown,itisoftenfasterthanacarandyouworryaboutparking.A.mustnot  B.maynotC.shouldnot  D.don'thavetoAD23策划：《学生双语报》