[高二英语]高二英语选修六unit1-grammar.ppt

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1、虚拟语气SubjunctiveMood(I)GRAMMER语法9/2/2021(TheSubjunctiveMood)表示说话人所说的话不是事实,而是一种假设,愿望,怀疑或推测。9/2/2021二.‘if’虚拟条件句的概念由‘if’引导的虚拟条件句叫作‘if’虚拟条件句IcouldeasilyrecognizehimifIhadseenbefore.三.ifSentenceStructure‘if’虚拟条件句的结构a.表示与现在事实相反的假设b.表示与过去事实相反的假设c.表示与将来事实相反的假设观察1：IfIwereyou,Ishould

2、finishmyhomeworkatfirst.如果我是你，我会先完成家庭作业。(2)IfIhadtime,Iwouldgothere.如果我有空，我会去那儿。总结1：表示与现在事实相反，if从句用过去时were,V+ed,主句用would/should/could+V.(原形)IfIwonthelottery,Iwouldbuyanexpensivecar.IfIhadalotofmoney,Iwouldbuyavilla.IfIhadalotofmoneynow,Iwouldtravelaroundtheworld.a.Ifthey___

3、_(be)here,they__________(take)youradvice.b.Iftheworld-war_____(burst)outagain,what_____________(happen)toourpeopleonearth?werewouldtakeburstwouldhappenPRACTICE1:Fillintheblanks.c.Ifthepoliceman________(benot)inthatroom,it________(be)verydangerous.d.IfI____(be)inyourposition

4、,I_________(ask)forteacher’shelp.werenotcouldbewerewouldask观察2：(3)Ifyouhadcomeearlier,youcouldhavecaughtthatbus.如果你来早点，你就会赶上那辆公共汽车了。(4)Ifhehadseenyouyesterday,hewouldhavereturnedyourbook.如果昨天他看到你，他就会还你书。总结2：表示与过去的事实相反，if从句用过去完成时haddone主句用would/could/should+havedone.2.与过去的事实

5、相反从句的谓语用had＋过去分词,构成IfI(we,you,he,they)＋had＋过去分词的形式；主句的谓语用should(第一人称)/would(第二、三人称)/could/mighthave＋动词过去分词。Ifwehadreviewedthetext,weshouldhavepasstheexam.Ifhe__________(drive)morecarefully,he_________________(nothave)thecaraccidentyesterday.haddrivenwouldnothavehada.IfTom__

6、______(be)morecarefulintheexam,he________________(pass)italready.b.Ifyou_______(get)upearlier,you________________(catch)thefirsttrain.hadbeenwouldhavepassedhadgotwouldhavecaughtPRACTICE2:Fillintheblanks.c.IfI_______(meet)youyesterday,we______________(go)totheconcerttogether

7、.hadmetwouldhavegoneIfheweretocometomorrow,heshouldhelpmewithmyphysics.假如他明天来，他会帮助我复习物理的。(6)Ifheshouldseemetomorrow,hewouldknowme.假如他明天看见我，就会认识我了。总结:表示于将来事实相反，if从句可用wereto;should+v;过去式主句用would/should+v.(原)观察3：Ifyousucceeded,everythingwouldbeallright.Ifyoushouldsucceed,every

8、thingwouldbeallright.Ifyouweretosucceed,everythingwouldbeallright.a.Ifthere_______