虚拟语气If条件句的虚拟语气PS:if省略的情况•如果虚拟条件句的谓语部分有were,had和should时,可省略if,把were,had,should放到从句主语前面去。•Hadyounothelpedme,Ishouldhavefailed.要是没有你的帮助,我就失败了。虚拟语气在宾语从句中的应用•宾语从句在表示建议、要求、命令、意志等动词后,其谓语用should+动词原形或只用动词原形的虚拟语气,作为suggest,request,demand,urge,propose,prefer,advise,insist,require,order,command,maintain,ask,object,arrange,desire等动词的宾语。Wish后的宾语从句的虚拟语气•从句的谓语动词可用过去式,表示现在的愿望(与现在事实相反)•从句的谓语动词还可用“could/would/might)+动词原形”用来表示将来的愿望•表示过去愿望(与过去事实相反),可用“had+过去分词”Wouldrather后的宾语从句的虚拟语气•表示与现在和将来含义事实相反的虚拟语气要用动词的过去式。•用过去完成式(had+过去分词)表示过去事实相反的含义练习题•1.Ididnotseeyoursisteratthemeeting.Ifshe____,shewouldhavemetmybrother•A.hascomeB.didcome•C.comeD.hadcome•2.Ifmylawyer_______herelastSaturday,he_______mefromgoing.•A.hadbeen;wouldhaveprevented•B.hadbeen;wouldprevent•C.were;wouldprevent•D.were;wouldhaveprevented•3.Itoldyourfriendhowtogettothehotel,butperhapsI_____havedrivenherthere.•A.couldB.must•C.mightD.should•4.________forherencouragement,Iwouldnothavepaidforthathugevase.•A.Wereitnot•B.Ifitisnot•C.Haditnotbeen•D.Iftheywerenot