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延续性动词与非延续性动词动词按其动作发生的方式、发生过程的长短可分为延续性动词与非延续性动词。•一、延续性动词可以与表示时间段的状语连用。表示时间段的短语有:•for+一段时间,如：for2years，foralongtime;since从句,如：sincehecamehere;•since+时间点名词,如：sincelastyear,since5daysago;howlong等。•二.非延续性动词也称终止性动词、瞬间动词或点动词,表示不能延续的动作,这种动作发生后立即结束。•如:open,die,close,begin(start),finish,come,go,move,borrow,lend,buy等。•非延续性动词在肯定句中与表示时间点的状语连用，如：twoyearsago;at5o'clock;eg：Hedied5yearsago.•终止性动词所表示的动作极其短暂且不能持续，所以在完成时的肯定句中不能和表示一段时间的状语连用。•如：for3years，sincehecamehere，howlong，ect.且看下面三个错误句子：•1)Jimhascomehereforfiveyears.•2)Hehasdiedfor3years.•否定的终止性动词可以与表示时间段的时间状语连用。现在完成时中延续性动词和非延续性动词延续性动词：studylearnsleeplivesingdanceswimdrinkteachkeep非延续性动词：buyborrowlenddieleavebegincome/go这些动词不能和howlong;for….since…连用要把它们变成其他相应的词.--------------------------------------------------------------------------------（buy买了…）have/hashad…（borrow借了…）have/haskept…（start/begin开始了…）have/hasbeenon（leave离开了…）have/hasbeenaway(from)..（来到某地/去某地….）have/hasbeenin…（die死了…）have/hasbeendeadfor…since….如果终止性动词在现在完成时句子中需要同有段时间状语连用，解决这一逻辑矛盾的方法就是将终止性动词转换为延续性动词。•三、延续性动词与终止性动词之间的转换•1、用相应的延续性动词替换句中的终止性动词：•borrow---keep,buy---have,•become/come/go---be,•catchacold---haveacold,•opensth.---keepsth.open,•puton--wear,eg.Iboughtthebook5daysago.Ihavehadthebookfor5days.•2、将终止性动词转换为be+介词短语begin/start---beon,finish---beover,join---bein+组织机构/beamemberof+组织机构,gotoschool—beinschool,getto/arrive/reach/come/go/move---bein/at+sw.puton—beon•eg.Hehasbeeninschoolfor9years.3、将终止性动词转换为be+名词jointhearmy—beasoldier,jointheLeague/Party—beaLeague/Partymembergotoschool—beastudent•eg.HejoinedtheParty2yearsago.•HehasbeeninthePartyfor2years.•4、用be+adj./adv.结构替换非延续性动词•close/open—beclosed/open,•come/goback/return---beback,•comehere---behere,die---bedead,•fallasleep---beasleep,fallill---beill,•finish/end/complete→beover,•gothere---bethere,go/leave---beaway（from）,•go(get)out→beout,getup---beup,•marry→bemarried,move—beoutof•eg.Theoldmandied4yearsago.•Theoldmanhasbeendeadfor4years.•5、去掉短语中的结束性动词•begintostudy—study,cometowork=work,•gettoknow---know,•eg：Wehaveknowneachotherfor3years.•6、用“Itis/Hasbeen+time+since…”句型表达原句的内容。但主句一般用现在时或完成时，since引导的时间状语或短语从句用一般过去时。•eg：Itis/Hasbeenthreeyearssincewegottoknoweachother.•7，用“time+havepassedsince…”句型表达同样的意思。•eg.Hehasbeenawayhishometownfor5years.•Fiveyearshaspassedsincehelefthishometown.•8，把一时间状语改为过去时间状语，原动词的完成时改为过去一般时。•eg.Helefthishometownfiveyearsago.•他参军三年了。•Hehasjoinedthearmyfor3years.•Hehasbeeninthearmyfor3years.•Hehasbeenasoldierfor3years.•Itis/Hasbeen3yearssincehejoinedthearmy.•Hejoinedthearmy3yearsago.1.我买这本书三年了。(1).Iboughtthebookthreeyearsago.(2)Ihavehadthebookfor3years.(3)Ihavehadthebooksince3yearsago.Howlonghaveyouhadthebook?2.他借这本书两个月了（1）Heborrowedthebooktwomonthsago.(2）Hehaskeptthebookfor2months.(3)Hehaskeptthebooksince2monthsago.Howlonghashekeptthebook?3.李梅离开济南一年了.(1)LiMeileftJinanoneyearago.(2)LiMeihasbeenawayfromJinanforoneyear.(3)LiMeihasbeenawayfromJinansince1yearago.HowlonghasLiMeibeenawayfromJinan?请大声读句子，每个读三遍。会议开始20分钟了。(1)Themeetingbegan20minutesago.(2)Themeetinghasbeenonfor20minutes.(3)Themeetinghasbeenonsince20minutes.Howlonghasthemeetingbeenon?Tom来中国10个月了。（1）TomcametoChina10monthsago.(2)TomhasbeeninChinafor10months.(3)TomhasbeeninChinasince10monthsago.HowlonghasTombeeninChina?请大声读句子，每个读三遍。Marry的祖父去世三年了。(1）Marry’sgrandfatherdied3yearsago.(2)Marry’sgrandfatherhasbeendeadfor3years.(3)Marry’sgrandfatherhasbeendeadsince3yearsago.HowlonghasMarry’sgrandfatherbeendead?请大声读句子，每个读三遍。1.Tom___forseveralhours.A.wenttobedB.hasbeeninbedC.hasgonetobedD.hasbeentobed2.Howlonghaveyou____thiscity?A.beentoB.beeninC.cometoD.goneto3.Myaunt____theTVfor4months.A.hasboughtB.wasboughtC.washadD.hashad4.MrBrown____thecarfor3months.A.boughtB.hadboughtC.hashadD.buys5.Theoldman___fortwodays.A.hasdiedB.hasbeendeadC.diedD.dies6.Mysisterhas____for8years.A.becomeadriverB.leftthecityC.arrivedinthecityD.livedhere7.Howlonghaveyou___?A.joinedtheteamB.becomeateamleaderC.beenintheteamD.lefttheteam8.Youarelate.Thefilm____for10minutes.A.hasbegunB.hasbeenonC.hasfinishedD.hasstarted9.Howlonghasshe_____thenewspaper?A.borrowB.lendC.keptD.buy