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1、Lesson22ByheartI.Objectives1.bl-2.ceed3.虚拟语气Subjunctivemood虚拟语气虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。1.在条件句中的应用条件句：真实条件：不用虚拟，if是如果的意思。 句型：条件从句 主句 一般现在时shall/will+动词原形e.g.Ifhecomes,hewillbringhiscat.①Ifyouleavenow,youarenevergoingtoregretit.②Ifyoule
2、avenow,youwillneverregretit.在真实条件句中，主句不能用begoingto表示将来，该用shall,will.。Ifitisnight,thesundoesn’trise.表示真理时，主句谓语动词便不用shall(will)+动词原形，而直接用一般现在时的动词形式.非真实条件：用虚拟时态：可以表示过去，现在和将来的情况。基本特点:时态退后时间条件状语从句主句与过去事实相反had+过去分词would(should,could,might)+have+过去分词与现在事实相反did/were
3、+动词原形与将来事实相反did/wereto/should+动词原形+动词原形①Ifyouhadworkedhard,youwouldn’thavefailedintheexam.②IfIwereabird,Icouldflyintheair.③Ifitweretoraintomorrow,themeetingwouldbeputoff.省略if要主谓倒装①IfIwereaboy,Iwouldjointhearmy.WereIaboy,Iwouldjointhearmy.②Ifhehadtakenmyadvic
4、e,hewouldhavesucceeded.Hadhetakenmyadvice,hewouldhavesucceeded.1._____todothework,Ishoulddoitsomeotherday.A.IfwereIB.IwereC.WereID.WasI2.Thevolleyballmatchwillbeputoffifit___.A.willrainB.rainsC.rainedD.israined3.Ifitrained,they___________(stay)athome.wouldst
5、ay4.Wewouldbeverymuchpleasedifyou___________(come).came5.Whatapity!Ihaven’tgotmycar.IfIhad,I_______(take)youtotheairport.havetaken6.Wewouldanswerthequestionsifwe___________(can).could7.IfIwereyou,I__________(take)alongwalkbeforegoingtobed.wouldtake8.Ifit___l
6、astnight,itwouldbeverycoldtoday.A.hadrained,B.rainedC.shouldrainD.weretorain混合条件句主句与从句的动作发生在不同的时间，这时主，从句谓语动词的虚拟语气形式因时间不同而不同，这叫做混合条件句。Ifyouhadaskedhimyesterday,youwouldknowwhattodonow.从句与过去事实相反，主句与现在事实相反。2.在宾语从句中应用在表示命令、建议、要求等一类动词后面的从句中。order,suggest,propose,
7、require,demand,request,insist,command,insist+(should)doe.g.Isuggestthatwe(should)holdameetingnextweek.e.g.Heinsistedthathe(should)besentthere.如suggest,insist表“暗示、表明”、“坚持认为”时，宾语从句用陈述语气。判断对错①Youpalefacesuggeststhatyou(should)beill.②Yourpalefacesuggeststhatyoua
8、reill.3.在同位语从句和表语从句中应用在suggestion,proposal,idea,plan,order,advice等名词后面的表语从句、同位语从句中要用虚拟语气，即（should）+动词原形。①Myideaisthatwe(should)getmorepeopletoattendtheconference.②Imakeaproposalthatwe(should)hol
