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1、M6U3GrammarUnrealconditionals虚拟语气【学习目标】StudentsareexpectedtolearnwhentouseUnrealconditionalsandhowtouseUnrealconditionals.【知识准备】英语中的语气分为陈述语气、祈使语气、虚拟语气三类。虚拟语气用来表示说话人的主观愿望或假想，而不表示客观存在的事实，所说的是一个条件，不一定是事实，或与事实相反。虚拟语气通过谓语动词的特殊形式来表示。条件状语从句分类 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或实际可能性不
2、大的情况，故采用虚拟语气。 eg：1.Ifhedoesn'thurryup,hewillmissthebus.2.Ifheisfree,hewillaskmetotellstories. 3.IfIwereyou,Iwouldgoatonce.4.Iftherewerenoair,peoplewoulddie.以上四句中和是真实语气；和是虚拟语气【自主探究】一、状语从句中的虚拟语气(一)if引导的条件状语从句1IfIhadtime,Iwouldattendthemeeting.2.IfIwereyou,Ishouldseizetheopportunitytog
3、oabroad.3.Ifyouhadtakenmyadvice,youwouldnothavefailedintheexams.4.Ifhehadcomeearlier,hewouldn’thavemissedthefirstbus.5Iftheheadmastercametomorrow,wewouldhavethemeeting.6Ifitweretoraintomorrow,thesportsmeetingwouldbeputoff.7Ifheshouldmakeamistake,youshouldnotblamehim.与现在事实相反与过去事实相反与将来
4、事实相反感悟：与现在事实相反1.IfIwereadoctor,Imightsaveherlifewithouthesitation.2.IfIstayedathomenow,Icouldplaycomputergames.总结形式：时态if条件从句主句与现在事实相反 动词用过去式be(were) Would/could/should/might+动词原形练一练：IfIwere…____________________________________IfIhadtime…,_____________________________________译一译:1.要是他
5、现在在这儿，我们就会问他关于这件事。Ifhewereherenow,wewouldaskhimaboutit.2.即使她现在在这儿，她也不能解决这个问题。Eventhoughshewere/washere,shecouldn'tsolvetheproblem.感悟：与过去事实相反61.IfIhadearnedalotofmoneylastyear,Iwouldhaveboughtacar.2.Iftheearthquakehadn’thappenedinWenchuanin2008,manypeoplewouldn’thavelostfamilies.总结形式：
6、时态if条件从句主句与过去事实相反动词用过去完成式would/could/should/might(not)+havedone练一练：1.Ifthefarmerhadn’tseenthesnake,he_______________(notput)itinthearms.2.Ifhe______________(notput)itinthearms,thesnakewouldn’thavebittenhim.3.Ifthesnake_______________(notbite)him,he________________(notdie).4.Ifmylawye
7、r___________(notbehere)lastSaturday,he____________(prevent)mefromgoing.4如果我好好学习_____________________________________________________________如果昨天我听你的建议，…______________________________________________________如果我更小心地开车，…________________________________________________________如果上个月没下雨，…_
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