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1、虚拟语气一利用(should)+do/bedone虚拟的结构1.一坚持：insist*二命令：order,command三建议:advise,suggest*,recommend四要求:require,request,demand,urge与上述词有关的名词性从句均利用(should)+do虚拟(1.) Isuggestthatwe（should）setoffatonce(2.) Thedoctorinsistedthatthepatient(should）beX-rayed．(3.)Wedemandedthathe_____________(pay)theb
2、illbytheendofthemonth.(4.) HerequestedthatAlice__________________(attend)themeeting .(5.)Itissuggestedthatthemeeting__________________(putoff)(should)payshouldattend(should)beput2.虚拟语气在主语从句中的用法在Itisnecessary/important/strange/natural/funnysurprisingthat…；等结构后的主语从句中要用虚拟语气，即Should+动词原
3、形或只用动词原形。如：Itisnecessarythathe（should）besentthereatonce．Corrections:1.Itisstrangethathesaidso.2.Itisimportantthatyouwillgivemealltheinformation.3.Hemadethesuggestionthatwemustfinishtheworkinthreehours 4.Theorderisthatthesoldierscanarriveatthevillagebeforedarkmust---should/去掉mustcan-
4、--should/去掉cansaid—say/shouldsaywill---should/去掉will二通过时态虚拟的结构 1.虚拟语气用于非真实条件句条件从句主句与现在事实相反Ifsb.+过去式（be的过去式是were）sb.+would (should,could,might)+动词原形与过去事实相反Ifsb.+haddonesb.+would (should,could,might)+havedone与将来事实可能相反Ifsb.+A.过去式B.weretodoC.should+动词原形sb.+would (should,could,might)+动词原
5、形1)IfI____abird,I____veryhappy.A.were,wouldbeB.were,shallbeC.am,wouldbe2)Ifmyfather__herenow,he__tellmewhattodoA.were,willB.were,wouldC.is,would3)IfI____acar,I____beveryhappy.A.have,shallB.had,shouldC.Hadhad,shall4)IfI____hertelephonenumber,I______her.A.had,wouldhavecalledB.hadhad,w
6、ouldhavecalled5)Ifyou___himyesterday,he____somesuggestions.A.hadtold,wouldhavegivenB.tell,hadgivenC.told,wouldhavegiven6)Itisquiteimpossiblethatitwillraintomorrow.Butifit_____,Iwouldstillgotothecinema.A.shouldrainB.wouldrainC.hadrained.7)Ifhe(fail),hewouldnevertouchthebook.shouldfai
7、l/failed/weretofail混合虚拟语气：Eg.1)Ifyouhadtakenthedoctor’sadvice,youwouldbewellnow.2)IfIhadnotwatchedTVyesterdayevening,Icouldfinishmyhomeworknow.1)IfI____thechancetenyearsago,Iwouldbeamanagernow.A.hadnotlostB.didnotloseC.Willnotlose2)Ifit(rain)lastnight（过去）,It______(be)verycoldtoday（现
8、在）．3) IfI(take)your
