资源描述:
《2010年中考英语语法复习精品课件--虚拟语气》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、2010年中考英语语法复习精品课件--虚拟语气虚拟语气:一、概念: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。二、在条件句中的应用:条件句可分为两类,一类为真实条件句,一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况,故采用虚拟语气。1、真实条件句:真实条件句用于陈述语气,假设的情况可能发生,其中if是如果的意思。时态关系:句型:条件从句 主句 一般现在时shall/will+动词原形例如:Ifhecomes,hewillbringhisviolin.典型例题:Thevolleyballmatc
2、hwillbeputoffifit___.A.willrainB.rainsC.rainedD.israined答案B。真实条件句主句为将来时,从句用一般现在时。注意:(1)在真实条件句中,主句不能用begoingto表示将来,该用shall,will.(错)Ifyouleavenow,youarenevergoingtoregretit.(对)Ifyouleavenow,youwillneverregretit.(2)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。2、非真实条件句:(1)时态:可以表示过去,现在和将
3、来的情况。它的基本特点是时态退后。a.同现在事实相反的假设。句型:条件从句 主句 一般过去时should(would)+动词原形例如:Iftheywerehere,theywouldhelpyou.b.表示于过去事实相反的假设。句型:条件从句 主句 过去完成时should(would)have+过去分词Ifshehadworkedharder,shewouldhavesucceeded.Thericewouldnothavebeenburntifyouhadbeenmorecareful.Ifmylawyerhadbeenherelast
4、Saturday,hewouldhavepreventedmefromgoing.Ifhehadcomeyesterday,Ishould/wouldhavetoldhimaboutit.含义:Hedidnotcomeyesterday,soIdidnottellhimaboutit.Ifhehadnotbeenillandmissedmanyclasses,hewouldhavemadegreaterprogress.含义:Hewasillandmissedmanylessons,sohedidnotmakegreaterprogress.c.表示对将来的假想:
5、句型:条件从句 主句 一般过去时should+动词原形were+不定式would+动词原形should+动词原形Ifyousucceeded,everythingwouldbeallright.Ifyoushouldsucceed,everythingwouldbeallright.Ifyouweretosucceed,everythingwouldbeallright.3、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,yo
6、uwouldknowwhattodonow.(从句与过去事实相反,主句与现在事实相反。)Ifithadrainedlastnight(过去),itwouldbeverycoldtoday(现在).4、虚拟条件句的倒装:虚拟条件句的从句部分如果含有were,should,或had,可将if省略,再把were,should或had移到从句句首,实行倒装。Weretheyherenow,theycouldhelpus.=Iftheywereherenow,theycouldhelpus.Hadyoucomeearlier,youwouldhavemethim.=Ify
7、ouhadcomeearlier,youwouldhavemethim.Shoulditrain,thecropswouldbesaved.=Wereittorain,thecropswouldbesaved.注意:在虚拟语气的从句中,动词‘be’的过去时态一律用“were”,不用was,即在从句中be用were代替。IfIwereyou,Iwouldgotolookforhim.如果我是你,就会去找他。Ifhewerehere,everythingwouldbeallright.如果他在这儿,一切都会好的。典型例题:_____todothework,Ishou
8、lddoi