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1、高中英语语法第十三讲虚拟语气第十三讲虚拟语气虚拟语气表示所说的话不是事实，而只是一种愿望、猜测、假设、建议，并且这种愿望、建议等实现的可能性很少或根本不能实现时，所使用的语气就是虚拟语气。如：IfIwereabird,Icouldflyintheskyfreely.要是我是一只鸟，我就能自由自在地在天空飞翔。I’dratheryoucamethisafternoon.我倒想要你今下午来。一条件句中的虚拟语气（主句和从句都要用虚拟语气）虚拟条件句主句例句1与现在事实相反的假设If+主语+did(动词的过去式)(be动词用were)主语+should/w
2、ould/could/mightdo(动词原形)IfIhadtime,Iwouldattendthemeeting.IfIwereyou,Ishouldseizetheopportunitytogoabroad.2与过去事实相反的假设If+主语+haddone(过去分词)主语+should/would/could/mighthavedone(过去分词)Ifyoudtakenmyadvice,youwouldnothavefailedintheexam.3与将来事实相反的假设①If+主语+did(动词过去式)②If+主语+weretodo(动词原形)③
3、If+主语+shoulddo(动词原形)主语+should/would/could/mightdo(动词原形)Ifyoucametomorrow,wewouldhavethemeeting.Ifitweretoraintomorrow,thesportsmeetingwouldbeputoff.Ifheshouldnotcometomorrow,weshouldputoffthemeetinguntilnextMonday.典型例题★①IfitSaturdaytoday,weforanouting,A.were;wentB.shouldbe;woul
4、dgoC.was;willgoD.shouldbe;willgo②yourarrival,I’dhavemetyouattherailway.A.IfIknowB.ShouldIknowC.IfIhadknowD.IfIknew9高中英语语法第十三讲虚拟语气◎四个情态动词在主句中的用法（主句中should只用于第一人称，从句中的should可用于各种人称）用法例句1. 若表示在某一假设的条件下，必然而然就会发生某事，第一人称可用should或would而二、三人称只用would.IfIhadgonetothepartylastnight,Ishoul
5、dhavemether.IfIhadseenthefilm,Iwouldhavetoldyouaboutit. If youhad money,youwould buy a carIfhestudiedatthisschool,hewouldknowyouwell.2. 若表示在某一假设条件下就能够干某事，各人称都用could.IfIwereyou,Icouldnoticehisstrangebehavior.Ifyouhadtakenmyadvice,youcouldhavefinishedyourwork.IfitwereSunday,sheco
6、uldgotoseehergrandma.3. 如果表示在某种假设条件下有可能会发生某事，各人称都用might.IfIhadtime,Imightgoshopping.Ifyouhadworkedatthattime,youmightbeagreatscientist.Ifhecame,hemightsolvetheproblem.二错综时间虚拟条件句情况例句1从句的动作与过去事实相反，而主句的动作与现在或现在正在发生的事实不符。IfIhadworkedhardatschool,Iwouldbeanengineer,too.Iftheyhadinfo
7、rmedus,wewouldnotcomeherenow.Ifithadnotbeenrainingtoomuch,thecropswouldbegrowingmuchbetter.Ifhehadbeenworkinghard,hewouldbeworkingintheofficenow.2从句的动作与现在事实相反，而主句的动作与过去事实不符。Ifhewerefreetoday,wewouldhavesenthimtoBeijing.Ifheknewher,hewouldhavegreetedher.典型例题★--How I wish I had s
8、tudied harder when I was in school!--If you had, you _
