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时间:2020-04-05
《语法难点评讲虚拟语气.ppt》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、语法难点评讲---虚拟语气非真实条件从句中的虚拟语气应用外语系廖芳SubjunctiveMoodBriefIntroduction:虚拟语气表示所说的话只是一种主观的愿望、假想和建议等;或者表示所说的话与事实相反或实现可能性很小。Examples:Weonlywishwecouldhelp.Iftherewerenogravity,weshouldnotbeabletowalk.Hesuggeststhatwe(should)allgotoseethefilm.虚拟语气在非真实条件从句中的用法注意!条件句有真实条件句与非真实条件句两
2、种。真实条件句所说的话是可能发生或实现的。句中的从句与主句皆用直陈语气。而非真实条件从句所说的话是不可能或不大可能发生或实现的,条件从句与结果主句都要用虚拟语气真实条件从句:IwillgotostudyabroadifIamofferedascholarship.Oureyesfeeltiredifwekeepwatching.非真实条件从句:IfIhadMary’saddress,Iwouldwritetoher.IfIwereyou,Iwouldstudymuchharder.图示非真实条件从句中的虚拟语气条件从句结果主句与现在
3、事实相反If+主语+过去式主语+would/should+动词原形与过去事实相反If+主语+过去完成式主语+would/should+现在完成式与将来事实相反If+主语+should/wereto+动词原形主语+would/should+动词原形细说…1、如果没有水,地球上就不会有生命。与现在情况相反Iftherewerenowater,therewouldbenolifeontheearth.2、如果你接受了我的建议,你就不会犯这样的错误。与过去情况相反Youwouldnothavemadesuchamistakeifyouhad
4、takenmyadvice.3、如果明天下雨的话,我们就不出去。对将来情况的假设Ifitshould/weretoraintomorrowwewouldstayathome.MoreExamples:Ifhe______herenow,hewouldnotlethergo.A.haveB.beC.wereD.willbeC2.He_____earlyifhemightcome.WouldhavedoneB.wouldcomeC.CameD.comesB3.Ifhe_____illandmissedmanyclasses,hewoul
5、dhaveMadegreaterprogress.A.WerenotillB.hadnotbeenC.WouldnotD.wasnotB4.Ifhe_______tomorrow,Ishouldgivehimthedictionaryheneeds.comesB.shouldcomeC.WouldcomeD.willcomeB__________Iyou,Iwoulddomorepracticeafterclass.A.wasB.amC.beD.were2.Shouldthejobbetoodifficult,you_____for
6、help.A.canaskB.askC.willaskD.couldaskTips:如果条件从句中的谓语动词为were或含有助动词had,should时,可将连词省略,而把were,had,或should移到主语之前。Moreexamples:3._______today,hewouldgetthereFriday.A.WasheleavingB.IfheleavesC.WerehetoleaveD.Ifheisleaving4.Hadelectroniccomputersnotbeeninvented,manyproblemsof
7、spaceflight__________.A.CouldnothavebeensolvedB.CouldnotbesolvedC.CannothavesolvedD.CouldnothavesolvedDDCA________yourassistance,wemightfinishtheplanearlier.A.IfB.WithC.WithoutD.Under2.Butfortheircommonefforts,they_______somuchintheirresearch.A.CouldnothaveachievedB.ca
8、nnothaveachievedC.CannotachievD.didnotachieveTips:有时虚拟语气不用条件从句而用介词,如without,butfor,butthat(=IF…HADNOT)等引起的短语或由连词but,s
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