条件句(虚拟语气)教学文案.ppt

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1、条件句(虚拟语气)真实条件句典型例题Thevolleyballmatchwillbeputoffifit___.A.　willrain　B.rains　C.rained　D.israined注意：1）在真实条件句中，主句不能用begoingto表示将来，该用shall,will.Ifyouleavenow,youarenevergoingtoregretit.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。非真实条件句时态：可以表示过去，现在和将来

2、的情况。它的基本特点是时态退后。条件从句主句同现在事实相反一般过去时should/would+动词原形同过去事实相反过去完成时should/wouldhave+done(过去分词）同将来事实相反一般过去时were+不定式should+动词原形should/would+动词原形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

3、Ifshehadworkedharder,shewouldhavesucceeded.Thericewouldnothavebeenburntifyouhadbeenmorecareful.IfmylawyerhadbeenherelastSaturday,hewouldhavepreventedmefromgoing.Ifhehadcomeyesterday,Ishould/wouldhavetoldhimaboutit.含义：Hedidnotcomeyesterday,soIdidnottellhimaboutit.Ifhehadnotbeenillandmisse

4、dmanyclasses,hewouldhavemadegreaterprogress.含义：Hewasillandmissedmanylessons,sohedidnotmakegreaterprogress.c.　表示对将来的假想句型：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

5、,everythingwouldbeallright.1.与现在的事实相反1)Whattypeofautomobilewouldyoubuy___?［A］ifyouhavefreechoicetochoosethecarsavailabletoday［B］ifyouarefreetochooseamongallthecarsavailabletoday［C］ifallcarsavailablewerefreetobechosenbyyou［D］ifyouwerefreetochooseamongallthecarsavailabletoday2.与过去的事实相反(有时主

6、句中的shouldhavedone表示责备或后悔)2)___hewouldhavecometoclass.［A］IfMikeisabletofinishhishomework［B］WouldMikebeabletofinishhishomework［C］IfMikecouldfinishhishomewor［D］IfMikehadbeenabletofinishhishomework3)IftheUnitedStateshadnotenteredtheSecondWorldWar，probablythe1940unemploymentrateof14％___stillf

7、urther.［A］wouldrise［B］wouldrisen［C］wouldhaverisen［D］hadrisen4)Topgrade［A］diamondshadnot［B］increasedsosharply［C］invalueinthelateseventies［D］ifonecompanyhadnotcontrolledalmostalloftheworld’ssupply.diamondswouldhavenot3.与将来的事实相反5)ItissaidTomwillgotoanappointmenttommorrow.If