条件状语从句ppt课件

Usefulstructure(20ms),TheSubjunctiveMood,III.用法:,1.用于条件状语从句中:,主从句,构成,时态,虚拟条件从句,主句,例句,与现在事实相反的假设,与过去事实相反的假设,If+主语+动词过去时(be用were),主语+would/should/could/might+动词原形,IfIhadtime,Iwouldattendthemeeting.,If+主语+had+过去分词,主语+would/should/could/might+have+过去分词,Ifyouhadtakenmyadvice,youdhavepassedtheexam.,主从句,构成,虚拟条件从句,主句,例句,与将来情况相反的假设,If+主语+动词的过去时If+主语+wereto+动词原形If+主语+should+动词原形,主语+would/should/could/might+动词原形,Ifyoucametomorrow,wewouldhavethemeeting.Ifitweretoraintomorrow,wewouldputoffthesportsmeeting.Ifheshouldnotcometomorrow,wewouldputoffthemeetingtillnextweek.,时态,2.用于名词性从句中:,1)用于主语从句中:,(1)用在Itissuggested/requested/demandedordered/desired/proposed/advised/insisted+that从句中,从句用(should)+动词原形:eg:Itssuggestedthatthemeeting(should)beputofftillnextweek.Itwasorderedthatthewoundedsoldiersbesenttothefieldhospitalatonce.(2)用在Itisnecessary/important/strange/odd/natural/surprising/essential/best/appropriate/shocking/sad/regrettable/apity/ashame/nowonder/hasbeendecided/+that从句中,从句用(should)+动词原形:,eg:Itisnecessarythatthecustomsofallnationalminoritiesberespected.Itisstrangethatheshouldhavesaidso.ItsapitythatIshoulddoitagain.Itisagreatpitythatheshouldbesocareless.ItisnotsurprisingthatAlfredshouldhavemarriedAmy.但(2)部分也可不用虚拟语气:eg:Itisapitythatshehasmadesuchamistake.Itisstrangethathedidntcomeyesterday.,2)用于宾语从句中:,在wish后用动词(情态动词)的过去时,如果与过去事实相反,动词用过去完成时:eg.HowIwishIwereabirdandcouldflyfreelyinthesky!IwishIhadnotmadesomanymistakesinthelastexam.HowIwishitwerentrainingnow!(2)在wouldrather后接从句,用过去时表示现在或将来要做的事情;用过去完成时表示过去要做的事情:eg.Idratheryoucametomorrow.Idratheryouhadnttoldhimthenews.(3)在advise,demand,insist,order,propose,request,require,suggest后用should+动词原形,should可以省略:,eg.Hesuggestedwe(should)startoffearlythenextday.Weinsistedtheynotbepresentatsuchgathering.Heorderedthatall(should)takepartinthework.Theyrequestedthatwe(should)havelunchwiththem.但是:当suggest表示“暗示,表明”insist表示“坚持认为”时,不用虚拟语气:eg.Thesmileonhisfacesuggestedthathewassatisfiedwithourwork.Themaninsistedthathehadneverstolenthemoney.,3)用于表语从句中:,(1)在advice,demand,order,proposal,request,suggestion等后面的表语从句中:eg.Myadviceisthathewaittillnextweek.Hersuggestionisthatweshouldlearnallthetextsbyheart.Thegeneralsorderwasthatallthesoldiersreachtheborderintenhours.,(2)当asif,asthough引导表语从句时:eg.Helooksasifhewereanartist.Theyappearasthoughtheyhadbeenfriendsforyears.,4)用于同位语从句中:,在advice,demand,order,proposal,request,suggestion等后面的同位语从句中,如:E.g.WeallagreetohissuggestionthatwegototheHappyValleyforanouting.Ordercamethatthesoldiersbesenttotheborder.Hereisthedoctorsadvicethatyoushouldtakethemedicine4timesaday.,3.用于定语从句中:,在Itis(high)timethat句型中,定语从句的谓语动词用过去时,或should+动词原形(should不能省略):,eg.Itis(high)timethatyouwenttoschool.Itstimeyoudidsomethingaboutit.Itis(high)timethatweshouldstartout.,5.用于ifonly引导的感叹句中,如:eg.IfonlyIwereabird!IfonlyIhadknownhertelephonenumber/e-mailaddress!IfonlyIhadntlostit!Ifonlytheletterhadarrivedintime!6.May+动词原形，表示祝愿.如:Maythefriendshipbetweenourtwopeopleslastforever!Mayyousucceed!Maytheplanwork!,1.IfIhadhadenoughtime,I_mywork.A.wouldfinishB.musthavefinishedC.wouldhavefinishedD.hadfinished2.Tenminutesearlier,they_theplane.A.willcatchB.wouldcatchC.wouldhavecaughtD.willhavecaught3.MrGreenrequiresthatthestudents_acompositioneveryotherweek.A.writeB.writenC.wouldwriteD.willwrite4.Hadhestudiedhard,he_theexam.A.wouldpassB.couldpassC.hadpassedD.wouldhavepassed,C,C,A,D,5.IwishI_whatishappeningthereinhisroom.A.knowB.knownC.knewD.shouldknow6.Itisimportantthatyou_sportseveryday.A.haveB.wouldhaveC.musthaveD.willhave7.Iftherewerenowaterintheworld,everything_.A.willdieB.woulddieC.wouldhavediedD.wouldhavebeendead8._whatwasgoingtohappen,Iwouldneverhaveleftheralone.A.HadIknownB.IfIknowC.IfIknewD.IfhadIknown,C,A,B,A,9.Heorderedthatthework_rightaway.A.shouldfinishB.finishedC.wouldbefinishedD.befinished10.Shallwegotothemovietonight?No,Idrather_athomewithourbaby.Youdbetternotleaveittothebabysitteratnight.A.youstayedB.youstayC.stayedD.stay11._inyourposition,Iwouldhelphim.A.WasIB.WereIC.IfIamD.IfIhadbeen12.I_,butIwasstoppedbytheheavyrain.A.meantocomeB.meanttocomeC.hadmeanttocomeD.meantcoming,D,A,B,C,13.MrsBlackinsists_inthatoldhotel.A.nottostayB.notstayingC.stayingnotD.thatshenotstay14.Ifyouhadspokenclearly,youwould_.A.understanditB.haveunderstoodC.beunderstoodD.havebeenunderstood15.Ifyou_thatlatemovielastnight,youwouldntbesosleepy.A.haventwatchedB.hadntwatchedC.didntwatchD.wouldnthavewatched16.TheforeignfriendspeaksChinesesowellasifhe_aChinese.A.isB.beC.shouldbeD.was,D,D,B,D,17.Ifhe_,he_thatfood.Luckilyhewassenttothehospitalimmediately.A.waswarned;wouldnottakeB.wouldbewarned;hadnottakenC.hadbeenwarned;wouldnothavetakenD.wouldhavebeenwarned;hadnottaken,C,1.Ifyou_(arrive)tenminutesearlier,youcouldhaveseenthemoff.2.Itstimethatwe_(go)totherailwaystation.3.Ifthey_(nothelp)us,ourexperimentwouldhavefailed.4.Yourefiveminuteslate.Isuggestedthatyou_(come)earliertomorrow.5.Matheroftentellsusthatitisnecessarythatwe_(drink)aglassofwaterafterwegetup.,hadarrived,(should)drink,hadnthelped,(should)come,went/shouldgo,6.Sheinsistedthatshe_(send)toworkinthefarawaysmalltown.7._Inot_(forget)histelephonenumber,Iwould