Todayweburiedour20-year-oldson.Hewaskilledinstantlyinamotorcycleaccidentyesterday.HowIwishIhadknownwhenItalkedtohimlastthatitwouldbethelasttime.IfIhadonlyknown,Iwouldhavesaid,"Jim,IloveyouandI'msoveryproudofyou."Readthefollowingessayandpayspecialattentiontothesentencesinred.(你能说出它们的语法结构吗？）Subjunctivemood(虚拟语气）高三英语第一轮语法复习Unrealconditionalswith“ifclause”虚拟语气在条件从句中的用法Whatwould/couldyoudoifyouwereasuperman?•IfIwereasuperman,Iwould/could…IfIwereasuperman,Icouldprotectpeoplewhoareindanger.Lookandlearn:•IfIgotmuchmoney,Imight/should…Whatmight/shouldyoudoifyougotmuchmoney?IfIgotmuchmoney,Ishoulddonatesometopeoplesufferingtheearthquake.Whatwould/couldyoudoifyoulivedonthemoon?•IfIlivedonthemoon,Iwould/could/might/should…IfIlivedonthemoon,Imightseethebeauty—Chang’e.•IfIwereasuperman,Icouldprotectpeoplewhoareindanger.•IfIlivedonthemoon,Imightseethebeauty—Chang’e.•IfIgotmuchmoney,Ishoulddonatesometopeoplesufferingtheearthquake.Findouttherules条件从句主句did/were(be动词一般用were,非正式情况可用was）would(could,might,should)+do总结1.Oppositetothepresenttruth与现在事实相反时，主、从句谓语构成would→intention;plan;expectedresult(意图；计划；必然结果）could→ability;possibility（能够；可能性）might→possibility（可能性）should→suggestion（建议）TIPTranslation:1如果我是你，我可能会告诉他真相。IfI____you,I_______________himthetruth.2要是我哥哥在这儿，一切都会很顺利的.Ifmybrother_____here,everything_________allright.weremighttellwerewouldbePractice:要是我哥哥昨天在这儿，一切都会很顺利的.Ifmybrother____________hereyesterday,everything_________________allright.hadbeenwouldhavebeen比较一下发现什么不同了吗？1.Ifmybrotherwerehere,everythingwouldbeallright.2.Ifmybrotherhadbeenhereyesterday,everythingwouldhavebeenallright.Iftherobberhadn’tattackedMr.Yu,hewouldn’thavebeenkilled.•Ifthebraveoldmanhadn’thelpedthelady,hecouldn’thavebeeninjured.Lookandlearn:Iftheyhadn’tcommittedacrime,theywouldn’thavebeencaughtbythepolice.FindoutthestructureIfmybrotherhadbeenhereyesterday,everythingwouldhavebeenallright.•Ifthebraveoldmanhadn’thelpedthelady,hecouldn’thavebeeninjured.Iftheyhadn’tcommittedacrime,theywouldn’thavebeencaughtbythepolice.条件从句主句haddonewould(should,could,might)+havedone总结2.Oppositetothepasttruth与过去事实相反时，主、从句谓语构成Practice:1.IfTom______________(be)morecarefulintheexam,he______________(pass)italready.2.Ifyou________________(get)upearlier,you__________________(catch)thefirsttrain.3.IfI______________(meet)youyesterday,we_____________(go)totheconcerttogether.hadbeenwouldhavepassedhadgotmighthavecaughthadmetcouldhavegoneＡ：—Wouldyoupleasehelpmemovehousetomorrow?Ｂ：—I’dliketo,butIhaveameetingtomorrow.IfIgottimetomorrow,Iwouldcertainlyhelpyou.Ａ：—That’sallright.Thankyouallthesame.Readandlearn:•IfitshouldbetheSpringFestivaltomorrow,Imightgetsomepocketmoney.•IfIweretohavefreetimethisFriday,Iwouldgototheparty.However,I’llattendameetingthatday.Whatapity!•IfIgottimetomorrow,Iwouldcertainlyhelpyou.•IfIweretohavefreetimethisFriday,Iwouldgototheparty.•IfitshouldbetheSpringFestivaltomorrow,Imightgetsomepocketmoney.Summarizethestructure条件从句主句①过去式(were/did)②should+do③weretodowould(might,could,should)+do总结3.Oppositetothefuturetruth与将来事实相反时，主、从句谓语构成如果明天下雨，运动会将会被推迟。...
