unit4虚拟语气Ｉ概念。虚拟语气是动词的一种特殊形式，用来表达说话人的愿望，意图，建议，惊奇，设想等未能实现的情况，以及在说话人看来实现可能性很小的情况。II.虚拟语气的特点：1、虚拟语气表达的是与客观现实相反的观念。2、虚拟语气常由一个表示条件的从句和一个主句构成。3、由于虚拟语气中条件从句中的条件是与客观事实相反，因此其主句的结论也只能是想象的，非真实的。4、虚拟语气的特点决定了它句中动词形式的使用与真实句中的动词形式的是不同的。同时，虚拟语气受时间的制约，分成以下三种句式：1）与现在事实相反的虚拟语气。2）与过去事实相反的虚拟语气3）与将来事实相反的虚拟语气III.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wereto+v主语+would+Vshould+v.could注：１。虚拟语气中助动词be一律用were，不用was。２．在与将来事实相反的虚拟语气中，“if＋主语＋should+Ｖ+…＋表示可能的假设1.与现在事实相反1)IfIhadacar,Ishouldbeveryhappy.=IshouldbeveryhappyifIhadacar,butIhaven’tacar.2)IfIwereabird,Icouldfly.=IcouldflyifIwereabird,butIamnotabird,soIcan’tfly.3)Ihetookhisteacher’sadvice,hemightpasstheexam.=Hemightpasstheexamifhetookhisteacher’sadvice,buthedoesn’ttakehisteacher’sadvice,sohedoesn'tpasstheexam.4)Ifitweren’training,weshouldgoforapicnic.=Weshouldgoforapicnicifitweren’training,butitisraining.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’tKey:AABBB2.与过去事实相反例：1)IfIhadknownhertelephonenumber,Iwouldhavecalledher.=IwouldhavecalledherifIhadknownhertelephonenumber,butIdidn'tknowhertelephonenumber,soIdidn’tcallher.2)Ifyouhadcometenminutesearlier,youcouldhavemetthatfamousfilmstar.=Youcouldhavemetthatfamousfilmstarifyouhadcometenminutesearlier,butyoudidn’tcometenminutesearlier,soyoudidn'tseethatfamousfilmstar.3)IfIhadrealizedtheimportanceofEnglishstudy,Ishouldhaveworkedmuchharder.=IshouldhaveworkedmuchharderifIhadrealizedtheimportanceofEnglishstudy,butIdidn’trealizetheimportanceofEnglishstudy,soIdidn'tworkharder.题例：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,wasDhasgoneKey:DABBA3.与将来事实相反例：1）IfIweretobetwentyyearsold,Iwouldtakethecourseofcomputerscience.=IwouldtakethecourseofcomputerscienceifIweretobetwentyyearsold,butIamnottwentyyearsold,soIwillnot...
