虚拟语气用法讲解.ppt

TheSubjunctiveMood虚拟语气Hehas…Daydreaming……陈述语气：用于陈述事实。祈使语气：用于提出请求、命令等。虚拟语气：①表示说话人说的不是事实而是一种假设、猜想等。②表示说话人的愿望、要求、命令、建议等。020301英语中的三种语气条件句有两类，一类是真实条件句，一类是虚拟条件句。Ifitdoesn’traintomorrow,wewillgotothepark.（1）真实条件句：假设的情况是有可能发生的。Ifhehadseenyouyesterday,hewouldhaveaskedyouaboutit.（2）虚拟条件句：假设的情况是过去或现在都不存在的，或将来都不可能发生的。一.虚拟语气在条件从句中的用法1.与现在事实相反从句-----过去式(be通常用were)，主句----should(would,could,might)+动词原形”：IfIknewhernumberIcouldringherup.Ifhewerefree,hewouldhelpus.Should用于第一三人称would表示结果，might表示可能性，could表示能力、允许或可能性IfIhadalotofmoneyIwouldbuyavilla.2.IfI______(有)aknife，I___________(就杀了)you。STEP1STEP2STEP3STEP4如果我是只鸟，我就能在天上飞了。IfIwereabird,Icouldflyinthesky.hadwouldkill从句----did/should+do/weretodo主句-----should/would/could/might+do2.与将来事实相反或将来的愿望推测Ifhegotupearly,hewouldbeontime.3、与过去事实相反从句——haddone主句——should/would/could/might+havedoneIfhe__________morecarefully,he_________________thecaraccidentyesterday.haddrivenwouldnothavehad虚拟语气在条件状语从句中的用法总结时态If从句的谓语形式主句的谓语形式现在过去未来did/werewould/could/should/might+V.(原)would/could/should/might+have+p.p.1.did/were2.shoulddo3.weretodowould/could/should/might+V.(原)haddone01主从句动作发生的时间不同时，按时间来确定虚拟形式。02Iftheweatherhadbeenbetter,thecropswouldbegrowingstillbetter.二：交叉虚拟Ifitwerenotforyouradvice,wecouldn’thavegotoverthedifficulties.Wereitnotforyouradvice,wecouldn’thavegotoverthedifficulties.当If条件句中有were,had,should这三个助动词时，可将If省略，从而将这三个助动词放到句首。without和butfor构成虚拟。(butfor要不是)Withoutsunlight,people’slifewouldbedifficult.Butforyourhelp,Iwouldn’thavefinishedthework.otherwise,or,orelse等的虚拟用法Shewasn’tfeelingverywell.Otherwiseshewouldn’thaveleftthemeetingsoearly.”Jackcan’thavearrivedyet,otherwisehe_____me.高考链接：01phonedwouldhavephoned hadphonedwouldphoned