情态动词should的用法.ppt

情态动词should的用法,1.shoulddo“表现在可将来”,shouldhavedone“表过去”,应该,与oughtto用法相当，但不如oughtto语气强。,Weshouldlearnaboutthecomputerandmakefulluseofit.我们应该了解计算机并加以充分利用。,Youshouldlistentothedoctorsadvice.你应当听大夫的话。,Ishouldhavefinishedmywork.我应该做完我的工作。（实际上还没有做完）,但当表示“应该”时，should更侧重自己主观的看法，而且oughtto更着重客观的情况。,Weshould(oughtto)goandseeMarysometime.Weoughtto(不用shoud)goandseeMarytomorrow,butIdontthinkwewillhavetime.,mustnt,shouldnthadbetternot,Theyshouldntleftsosoon.,表禁止,Youshoulddowhatyourparentstellyou.Ioftenseelightsinthatemptyhouse.DoyouthinkIshouldreportittothepolice?,should,musthaveto,表义务(应该),有时态变化,-IlltellMaryabouthernewjobtomorrow.-Youshouldhavetoldherlastweek.,表示与过去事实的相反,意为“本应该”,2.在Itis/wasrightthat.类句型的that从句中，以虚拟语气表示“应该如此”或“不合理”、“难以置信”、“不该如此”等意思（事实并非如愿）。例如：,Itis/wasnowonderthatheshouldhavesucceeded.(表过去)难怪他会成功。,Itis/wasapitythatheshouldhavefailed.（表过去）真可惜他失败了。,Itisnotrightthatoneshouldspeakillofothers.(表现在及未来)说别人的坏话是不对的。,Itisstrangethatyoushouldsayso.(表现在)你这样说话真奇怪呀！,这一句型还可用以下这些词来代替right等词。,natural,necessary,strange,important,advisable,better,desirable(合意的),essential,good,proper,well,urgent,wrong,funny,pitiful,athousandpities,regrettable(令人惋惜的)，toberegretted（令人惋惜的）,surprising(令人吃惊的),类似句型还有：（以下句中should意为“竟然，居然会”）,IamsorrythatIshouldhavespokensorudely.(表过去)我很抱歉我竟然说话那么粗鲁。,Whatareyou(Iamsuprised)thatyoushouldhavesoinsultedourteacher?(表过去)你是谁竟然对我们老师如此无礼？,3.表明显的结果或合理的推论，且所期待的事几乎是事实。不是虚拟语气。例如：,Marytookdancingdessonsforyears;sheshouldbeanexcellentdancer.玛丽学了几年的舞蹈，她该是位很优秀的舞蹈家。,Itisthreeoclock;thefootballgameshouldbeginsoon.已是3点钟了，足球比赛开始了。,4.在疑问句中表示惊讶、不合理、难以置信或不应说的事。例如：,WhyshouldIgo?我干嘛要去？（不满）,Whyshouldhepublishsuchabook?为何他竟会出版这种书？,Whyshouldyoubesorryaboutthenews?你为何对这消息感到难过？,Shouldhedosuchathing?他会做这种事吗？,HowshouldIknow?我怎么会知道？,Whoshouldwriteitbuthimself?不是他自己还有谁会写呢？,5.带should的习惯用语。,a.Ishouldsay(我敢说)heisoverforty.,b.Sheisoverthirty,Ishouldthink(我相信),6.Should用于虚拟语气,Youcantimaginethatawell-behavedgentlemanshouldbesorudetoalady.,表示吃惊,意为“竟然会”,1.IncaseI_,Iwouldtryagain.A.willfailB.wouldmissC.shouldfailD.shallmiss,2.Heaskedmeifhe_openthewindow.A.shallB.wouldC.willD.should,3.Everyone_dohisbesttomaketheworldsafeandclean.A.canB.mayC.shouldD.hadto,didnt/neednttodo本不需要做而实际上也没做shouldhavedone本应该做而实际上没做(责备),1.Itwasreallyverydangerous;you_himseriously.A.mighthaveinjuredB.couldinjureC.shouldhaveinjuredD.mustinjure,Practice,2.“_youmindmyopeningthewindow?”“Notatall.”A.ShallB.ShouldC.WillD.Would,3.Ididnthearthephone.I_asleep.A.mustbeB.musthavebeenC.shouldhaveD.couldhavebee,4.You_paymoreattentiontoyourspellingnexttime.A.wouldB.shouldC.willD.shall,5.Theteachertoldthestudentsthatthey_keepsilentinclassallthetime.A.oughttonotB.oughtnottoC.oughtnottohaveD.cant,6.Acomputer_thinkforitself;it_betoldwhattodo.A.maynot,mustB.mustnt,mightC.shouldnt,couldD.cant,mustbeen7.You_meaboutitearlier,butyoudidnt.A.shouldhavetoldB.wouldhavetoldC.musthavetoldD.shouldtell,8.-ShallItellJohnaboutit?-No,you_.Ivetoldhimalready.A.needntB.wouldntC.mustntD.shouldnt,高考链接,1.Whereismydictionary?IrememberIputithereyesterday.You_itinthewrongplace.(江西2007)A.mustputB.shouldhaveputC.mightputD.mighthaveput,A,2.She_havelefts