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IftheGod________________________(give)meanotherchance，I_________(tell)thegirlthreewords,“Iloveyou.”IfI______(haveto)setatimelimittoourlove,It_________(be)10,000years!shouldgive/weretogive/gavewouldtellhadtowouldbe如果上天能够给我一个再来一次的机会，我会对那个女孩子说三个字：我爱你。如果非要在这份爱上加上一个期限，我希望是--一万年!SubjunctiveMood虚拟语气1.英语动词有三种语气，陈述语气，祈使语气和虚拟语气。2.定义：用来表示所说的话不是事实，或者是不可能发生的情况，而是一种愿望，建议，假设的语气叫虚拟语气。3.虚拟语气的特点1.虚拟语气用以表示假定，想象，愿望等非事实的观念。2.虚拟条件从句中的条件是假设的，因此主句的结论也只能是想象的，非事实的。3.这些特点决定了它必须使用不同于真实句的动词形式。SubjunctiveMood虚拟语气1If条件句中的虚拟语气SubjunctiveMoodInIf-clausesif引导的条件句条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况，故采用虚拟语气。Ifyouhadcomehere,youwouldhavemetthatfamousprofessor.Thevolleyballmatchwillbeputoffifitrains.真实条件句虚拟条件句Compareandtellitisafactorawish.IfIhavetimetomorrow,Iwillgowithyou.IfIwereabird,Iwouldflyhightotouchthecloud.IfIwereGod,Iwouldmakealltheblindseethebeautifulworld.IfIgetmoreinformation,Iwilltellyouimmediately.afactawishafactawish1SubjunctiveMoodInIf-clausesIf条件句中的虚拟语气观察分析1.与过去事实相反虚拟条件句主句had+过去分词（过去完成时）should/would/could/might+have+过去分词归纳总结1.(Ididn’tseethefilmlastSunday.)IfIhadseenthefilm,Iwouldhavetoldyouaboutit.2.(Igotthereverylate.)IfIhadgotthereearlier,IwouldhavemetMr.Li.3.(Hedroveverycarelessly.)Ifhehaddrivenmorecarefully,hemightnothavehadthecaraccidentyesterday.1SubjunctiveMoodInIf-clausesIf条件句中的虚拟语气1If条件句中的虚拟语气SubjunctiveMoodInIf-clauses1.(ItisMondaytoday.)IfitwereSunday,Iwouldwatchamoviewithyou.2.(Iamagirl.)IfIwereaboy,Iwouldlistentoher.3.(Hestudiesatanotherschool.)Ifhestudiedatthisschool,hewouldknowyouwell.4.(Idon’thaveaticket.)IfIhadaticket,Iwouldgototheconcert.观察分析2.与现在事实相反虚拟条件句主句动词的过去式Did(Be的过去式用were)归纳总结should/would/could/might+V原形1If条件句中的虚拟语气SubjunctiveMoodInIf-clauses观察分析3.与将来事实相反虚拟条件句主句过去式Didshould+v.原形wereto+v.原形归纳总结should/would/could/might+V原形1.（Mr.Liwillnotcometomorrow.）IfMr.Licametomorrow,wecouldaskhimsomequestions.2.(Itwillnotsnowthisevening.)Ifitweretosnowthisevening,theywouldnotgoout.3.(HeisnotgoingtoQingHuaUniversity.)IfheshouldgotoTsinghuaUniversity,hewouldmakefulluseofhistime.时间if条件句谓语主句谓语与现在事实相反与过去事实相反与将来事实相反SubjunctiveMoodInIf-clauseswould/could/might/should+动词原形动词过去式(be动词用were)had+过去分词would/could/might/should+have+过去分词would/could/might/should+动词原形动词过去式wereto+动词原形should+动词原形1SubjunctiveMoodInIf-clausesIf条件句中的虚拟语气1.IfIhadH1N1,IwouldknowbecauseIwouldfeelsickandhaveafever.2.IfIwereyou,IwouldgiveAIDSpatientahug.3.IfIhadtakenyouradvice,Iwouldn’thavemadeamistake.4.Ifhehadbeenthere,itwouldn’thavehappened.（与现在事实相反）（与过去事实相反）Practice5.Ifitshouldraintomorrow,theywouldn’tgoforanouting.6.Ithinkwecoulddoit,ifweplanneditproperlyandcouldborrowthetools.7.Ifweweretohavethreedaysoff,wewouldenjoyaveryhappylife.(与将来事实相反)PracticeIfI____________busylastnight,I_______________toseethefilmwithyou.hadnotbeenwouldhavegonePracticeIfhe__________morecarefully,he________________thecaraccidentyesterday.wouldnothavehadhaddrivenPractice1.如果你早来5分钟，你就赶上这趟车了。Ifyou_______herefiveminutesearlier，you______________thebus.2.如果我现在不忙，我就来帮你了。IfI____notbusy,I_________younow.3.如果明天下雪了，我们怎么办？What______wedoifit____________tomorrow?hadgotwerewouldhelpshouldweretosnowwouldhavecaughtPracticeIfIwereyou,Iwoulddoitinanotherway.WereIyou,Iwoulddoitinanotherway.Ifitshouldraintomorrow,wewouldnotgoclimbing.Shoulditraintomorrow,wewouldnotgoclimbing.Ifithadnotbeenforyourhelp,Icouldn’thavefinishedmyworkontime.Haditnotbeenforyourhelp,Iwouldn’thavefinishedmyworkontime.1.if虚拟条件句的省略倒装虚拟语气在在非真实条件从句中条件从句中的谓语部分有were，should，had时，if可省略，把这三个词提前，变为倒装句式．1SubjunctiveMoodInIf-clausesIf条件句中的虚拟语气★_______sheaman,shemightbeelectedpresident.A.IfwereB.WereC.BeD.Is√★_______,mancouldnotliveatall.Awereitnotforthesun.Bifitwasforthesun.Chaditnotbeenforthesun.Difitshouldn’tbeforthesun.√Practice如果没有你的帮助,我是不可能按时完成工作的.Ifithadnotbeenforyourhelp,Icouldn’thavefinishedmyworkontime.=Withoutyourhelp,Icouldn’thavefinishedmyworkontime.=Butforyourhelp,Icouldn’thavefinishedmyworkontime.虚拟语气在条件从句中2.含蓄条件句含蓄虚拟条件句指的是假设的情况并不以条件从句表示达出来，而是通过一些介词、上下文或其他方式来表示。如：without，butfor(要不是），exceptfor，or,otherwise，supposing等1SubjunctiveMoodInIf-clausesIf条件句中的虚拟语气4.含蓄的虚拟条件句。★Ilostyouraddress,otherwiseI＿＿＿＿youlongbefore.A.hadvisitedB.havevisitedC.wouldhavevisitedD.shouldvisitcouldn’thavesucceeded没有你的帮助，我们就不会实验成功。Withoutyourhelp,we＿＿＿＿＿＿＿＿＿＿＿＿intheexperiment.√如果你当时听了我的话,你现在也不会有这样的麻烦了.3.错综时间条件句虚拟语气在条件从句中与现在事实相反与过去事实相反错综时间条件句指的是条件状语从句所表示的行为和主句表示的行为所发生的时间不一致，动词的形式此时需根据它所表示的时间作出相应的调整。Ifyou’dlistenedtome,youwouldn’tbeinsuchtroublenow.1SubjunctiveMoodInIf-clausesIf条件句中的虚拟语气如果他听了我的劝告，他现在会通过考试。Hewouldpassthetestifhehadtakenmyadvice．假如他昨天对我说了，现在我就知道该怎么办了。Ifhehadspokentomeyesterday,Ishouldknowwhattodonow.假如我是你，我当时就不会打破那杯子。IfIwereyou,Iwouldnothavebrokentheglass.混合的虚拟条件句，即主句的虚拟和从句的虚拟不是发生在同一时间。在这样的情况下，主句和从句有各自的时间状语。主句和从句的谓语动词要依照假设的时间而定。(“各归各”的原则）过去现在过去现在现在过去★IftheUnitedStateshadbuiltmorehomesforpoorpeoplein1955,thehousingproblemsnowinsomepartsofthiscountry______soserious.A.wouldn’tbeB.willnothavebeenC.wouldn’thavebeenD.wouldhavenotbeen√Practice2单句虚拟语气SubjunctiveMoodInsinglesenseIwishIwereabird.2单句虚拟语气SubjunctiveMoodInsinglesenseIfonlyI