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1、虚拟语气 SubjunctiveMoodIf虚拟条件句凤台一中马菲菲一.语气的分类陈述语气祈使语气虚拟语气Step1.Approachingandpresentingthegrammar1、陈述语气：陈述语气用于陈述句中：eg.Thesunislargerthantheearth太阳比地球大2、祈使语气：表示恳求、建议或邀请eg.Speakmoreslowly!讲慢点3、虚拟语气：是动词的一种特殊形式。它用来表示所说的不是事实，或者是不可能发生的情况，而是一种愿望、建议或是与事实，或是与事实相反的假设。eg.IfIwe
2、reaboy，Iwouldturnoffmyphone一、虚拟语气在“if”非真实条件句中的应用条件句可分为两类:一、真实条件句:真实条件句用于陈述语气，假设的情况可能发生，其中if是如果的意思。二、非真实条件句:非真实条件句用虚拟语气,假设的情况不可能发生,或者可能性很小,其中if是“要是、如果”的意思。即:“要是……就好了”;“如果…,…就会…”一、真实条件句Ifhecomes,hewill/shallbringhisfootball.条件从句，主句(一般现在时)(shall/will+V原形)‘if’虚拟条件句的
3、结构1.表示与过去事实相反的假设2.表示与现在事实相反的假设3.表示与将来事实相反的假设IfTomhadn'tslept,hewouldn'thavemissedtheplane.Ifyouhadcomeearlier,youwouldhavemethim.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.Ifhe(notbe)ill，XiaoJiangwouldhavedonesomethingtohelpus．had
4、notbeen2.IfIhadhadenoughtime,Imywork. A.wouldfinishB.musthavefinishedC.wouldhavefinished D.hadfinished小试牛刀IfIwereaboy，IwouldturnoffmyphoneIfIhadamobilephone,itwouldbeconvenientformetogetintouchwithmydad2.与现在事实相反虚拟条件句主句动词的过去式Be的过去式用wereshould/would/could/mig
5、ht+V原观察分析归纳总结Iamnottired.IfIweretired，I_______________(have)arest.Ifthere(notbe)electricity，there(be)nomodernindustry.3.Ifsomeone(call)youafool,whatwouldyousayordo？wouldhavewerenotwouldbecalled小试牛刀例一：A:Ifyouhadalotofmoney,whatwould/might...youdonow?B:IfIhadaloto
6、fmoneynow,Iwould.....例二：A:Ifafirebrokeoutnow,whatshould/could..youdo?B:Ifafirebrokeoutnow,Ishould.........If+主+过去式（be动词的过去式用were）..,主+would/could/should/might+动词原形Discusswithyourdeskmateandmakeashortdialogue.1.Ifyoucametomorrow,wewouldholdaparty.finishinglinetog
7、ether.2.Ifyoushouldfailthetestagain,whatwouldyoudo？3.Ifitweretoraintomorrow,wewouldn'tgoout.观察分析3与将来事实可能相反或假设If虚拟条件句主句过去式should+v.原wereto+v.原should/would/could/might+V.原归纳总结Step3Conclusion条件从句If从句的谓语形式主句的谓语形式现在过去将来过去时（were）过去完成时would/could/should/might+V（原）would
8、/could/should/might+have+p.p.1.过去时2.should+V.3.weretodowould/could/should/might+V.（原）1.完成句子(1)IfI_______(have)time,Iwouldgothere.(2)Ifyouhadcomeearlier,you___________
