虚拟语气表示说话人的愿望、假设、猜测或建议，而不表示客观存在的事实。虚拟语气通过谓语动词的特殊形式来表示，下面对虚拟语气在各种句式中的用法分别介绍。句式复合句状语从句定语从句名词性从句主语从句宾语从句表语从句同位语从句SubjunctiveMood条件状语从句其他状语从句If条件句含蓄条件句简单句一、虚拟语气在简单句中的应用用“may十动词原形”表示“祝愿”、“但愿”．may须置于句首，例如：Mayyoubehappy!Mayyousucceed!Mayyouhaveagoodtime!其他表示愿望、祝愿或诅咒;命令。Godblessyou.Heavenforbid!work!Bemorecareful！Yougoout!名词性从句主语从句条件状语从句含蓄条件句二、复合句定语从句状语从句宾语从句表语从句同位语从句其他状语从句If条件句虚拟条件句可分为两类：一类是叙述与现实事实相反的情况，一类是叙述与过去事实相反的情况。另外，还有一类用于推测将来的情况，也称作推测条件句。（一）虚拟语气用于条件状语从句。表示与现在事实相反的假设时，条件状语从句中的谓语动词用“过去式（be的过去式用were）”，而主句中的谓语动词用“would（should,could,might）+动词原形。”ExampleIfIhadtime,Iwouldcertainlygotothemovies.IfIwereyou,IshouldstudyEnglish.Ifhehadtime,hewouldattendthemeeting.练习题例：1)Ifmyfather__________herenow,he_________tellmewhattodo.A.were,wouldBwere,willCis,wouldDis,will2)IfI________abee,I__________workmuchharder.Awere,wouldBwere,shallChad,willDhave,should3)IfI_______muchmoney,I_________buyahouse.Ahave,willBhad,shouldChad,willDhave,should4)He__________learnmorequicklyifhe_________harder.Awill,workBwould,workedCwould,workDwill,worked5)IfI__________you,I_________dothat.Awas,wouldn'tBwere,wouldn'tCam,won’tDwere,won’tAABBB表示与过去的事实相反的假设时，条件状语从句的谓语动词用“had+过去分词”，主句中的谓语动词用“would（should,could,might）+have+过去分词”。Eg:Ifyouhadtakenmyadvice,youwouldn’thavefailedintheexamination.Ifshehadworkedharder,shewouldhavesucceeded.Thericewouldnothavebeenburntifyouhadbeenmorecareful.练习练习1)Ifyou___thedoctor’sadvice,youwouldhaverecognizedalready.A.followedBwouldfollowCfollowDhadfollowed2)Ifmylawyer____herelastSaturday,he___mefromgoing.Ahadbeen,wouldhavepreventedBhadbeen,wouldpreventCwere,wouldpreventDwere,wouldhaveprevented3)I___ifshe____me.Awouldhaveoverslept,didn'tcallBwouldhaveoverslept,hadn’tcalledCoverslept,hadn'tcalledDwouldoverslept,didn'tcall4)----Ifhe___,he___thatfood.----Luckilyhewassenttothehospitalimmediately.Awaswarned,wouldnottakeBhadbeenwarned,wouldnothavetakenCwouldbewarned,hadnottakenDwouldhavebeenwarned,hadnottaken5)She_____tothepartyifshe_____invited.Awouldhavegone,hadbeenBwouldgo,wasCwouldhavegone,wasDhasgoneDABBA表示与将来事实相反的假设时，条件从句和主句所用的谓语动词怀“表示与现在事实相反的假设”的谓语动词相同，或者条件从句中用“wereto/should+动词原形”or过去式。Ifyoucametomorrow,wewouldhavethemeeting.Ifitweretoraintomorrow,themeetingwouldbeputoff.Ifheshoulddoit,hewoulduseanotherway.1)It’squiteimpossiblethatitwillraintomorrow.Butifit____,Iwouldstillgotothepark.AshouldrainBwouldrainCrainDhadrained2)Idon’tthinkthatIshallfail.ButifI____,Iwouldtryagain.AshouldfailBwouldfailCfailedDhadfailed3)_____Tomorrow,whatshouldwedo?AIfitrainsB.ShoulditrainC.woulditrainD.WereitrainingIII.在不同时间下，虚拟语气的三种形式，公式。I.与现在事实相反WeremightIf+主语+过去式动词would过去式助动词，主语+could+VShouldII.与过去事实相反mightwould+have+过去分词If+主语+had+过去分词,主语+couldShouldIII.与将来事实相反Weremightif+主语+过去式助动词shouldwereto+v主语+would+VShould+v.Co...
