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1、Book6Unit1,Grammar虚拟语气(一)英语动词有三种语气:陈述语气,祈使语气和虚拟语气。(一)陈述语气:用来陈述一个事实,或提出一种看法,有肯定、否定、疑问或感叹等形式。Thesunislargerthantheearth.DoesTomusuallygetupveryearly?二)祈使语气:用来表示请求、邀请、命令、警告或劝告等。Waitoutsideuntilyouareasked.Let’sjusttakeabreak,shallwe?(三)虚拟语气表示说话人所说的话不是事实,而是一种假设,愿望
2、,怀疑或推测。条件句分真实条件句和虚拟条件句两种。a.真实条件句:表示条件是真的或有可能实现的,采用陈述语气。b.虚拟条件句/非真实条件句:表示条件是无法实现或几乎无法实现的,采用虚拟语气。真实条件句:1.IfIgivethesweettohim,hewillfeelhappy.2.Ifitisfinetomorrow,Ishallgoshopping.If引导的真实条件句的结构:If 从句中的谓语动词形式主句的谓语动词形式 do/ does/ am/ are/ is shall/ will d
3、o 一.虚拟语气在状语从句中的应用由if引导的虚拟条件句1.Eg:IftheGodgave(give)meanotherchance,Iwouldtell(tell)thegirlthreewords,“Iloveyou.”IfIhadto(haveto)setatimelimittoourlove,it_wouldbe(be)10,000years!与现在事实相反的虚拟条件句 条件从句 主句 一般过去时 (be多were) would/should/could/might+动词原形2.Eg:1)If
4、Ihadnotbeenbusylastnight,Iwouldhavegonetoseethefilmwithyou.2)Ifhehaddrivenmorecarefully,hewouldnothavehadthecaraccidentyesterday.与过去事实相反的虚拟条件句 条件从句 主句 过去完成时 would/should/could/might+have done 3.eg:Ifyougot/weretoget/shouldget(get)afullmark
5、nexttime,Iwouldhold(hold)apartyforyou.与将来事实相反的虚拟条件句(通常有时间状语) 条件从句 主句 一般过去时(be多用were)should do,were to do would/should/could/might+动词原形 总结:if虚拟条件句的结构: 条件从句主句与现在事实相反 If主语+___________(be的过去式用___________)__________________________+动词原形与过去事实相反 If主语+
6、_______________________________________+________+_________________ 与将来事实可能相反 If主语+___________(be的过去式用__________);_______________+动词原形;_______________+动词原形__________________________+动词原形练习:1).IfIhad(have)enoughmoney,Icouldbuyanewhouse.2).Ifitshouldraintomorr
7、ow,Iwouldstay(stay)athome.3).IfIweretostayathome,Iwouldhave(have)agoodrest.4).Ifyoucametomorrow,Iwouldgofishingwithyou.5).IfIhadtakenmoneywithmeyesterday,Iwouldhaverepaired(repair)mywatch.6).IfIhadgotup(getup)early,Iwouldn’thavebeenlate.4.有时虚拟条件句并没来用if从句表示出来,而
8、是用介词短语(without,butfor,or)或者连词otherwise,上下文或其它方式来表示。这种句子叫做含蓄条件句.(1).Withoutair,wewouldnotliveevenforfiveminutes.=Iftherewerenoair,wewouldnotliveevenforfiveminutes.(2).Butforthestorm