资源描述：
《高中二年级英语必修4第三课时课件》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、SubjunctiveMoodUnit1GrammarLifeisnotbasedon“ifs”.Manypeoplearenothappybecausetheybasetheirlifeon“ifs”.IfIhadamilliondollars,A表示与现在事实相反的假设,条件状语从句用“一般过去式(be一般用were)”,而主句谓语动词由“would/should/could/might+动词原形”构成。虚拟语气用于条件状语从句IfIwereaboy,Iwouldjointhearmy.Whatwouldyoudoifyouw
2、onthelottery?IfIwonthelottery,Iwould…IfIwonthelottery,Iwouldbuyanexpensivecar.IfIhadalotofmoney,Iwouldbuyavilla.IfIhadalotofmoneynow,Iwouldtravelaroundtheworld.IfI____ateacher,I….wereIfwedidnothaveclass,wecould/would/might…IfIhad1million$,Icould/would/might…Ifyoucould
3、helpmewithmyhomework,Icould/would/might…IfIwereabird,Icould/would/mightbehappier.IfIwereaboy/girl,Icould/would/might…a.Ifthey_____(be)here,they__________(take)youradvice.b.Iftheworld-war_____(burst)outagain,what_____________(happen)toourpeopleonearth?werewouldtakeburs
4、twouldhappenI:Fillintheblanks.c.Ifthepoliceman________(benot)inthatroom,it________(be)verydangerous.d.IfI_____(be)inyourposition,I_________(ask)forteacher’shelp.werewouldaskwerenotcouldbe条件从句条件从句的谓语形式主语的谓语形式与现在相反IfI(you,he/she,they,we)+动词过去式should/would/could/might+动词
5、原形IfIwereyou,Iwouldbestrictwithmystudents.IfIhadHIV,IwouldknowbecauseIwouldfeelsick.与现在相反在If引导的虚拟条件句中,谓语动词为had或were时，可把if省略，把were/had提前。HadIenoughtimeandmoney,Iwouldtravelaroundtheword.WereIyou,Iwouldturntotheteacherforhelp.WereIabird,Icouldflyinthesky.2.与过去的事实相反从句的谓语
6、用had＋过去分词,构成IfI(we,you,he,they)＋haddone的形式；主句的谓语用should/would/could/mighthave＋havedone。Ifhe__________morecarefully,he_________________thecaraccidentyesterday.haddrivenwouldnothavehadIfIhadlearnthowtoswim,I__________________trappedonthatisland.wouldnothavebeena.IfTom__
7、______(be)morecarefulintheexam,he________________(pass)italready.b.Ifyou_______(get)upearlier,you________________(catch)thefirsttrain.hadbeenwouldhavepassedhadgotwouldhavecaughtII:Fillintheblanks.条件从句条件从句的谓语形式主语的谓语形式与过去相反IfI(you,he/she,they,we)+had+过去分词should/would/co
8、uld/might+have+过去分词例：IfIhadcomeyesterday,Iwouldhaveseenhim.如果我昨天来，就会看见他了。Ifyouhadgotupearlier,youcouldhavecaughtthetrain.如果你
