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1. 表示能够延续动作的动词，如：learn,work,stand,lie,know,walk,keep,have,wait,watch,sing,read,sleep,live,stay等。延续性动词可以与表示时间段的状语连用。2. 表示时间段的短语有:for+一段时间,for2years;since从句,sincehecamehere;since+时间点名词,sincelastyear,since5daysago;howlong;foralongtime等。例:Hehaslivedherefor6years.Youcankeepthebookfor5days.Istayedtherefor2weekslastyear.Howlongdidyoustaytherelastyear?二 .非延续性动词1. 非延续性动词也称终止性动词、瞬间动词，表示不能延续动作的动词，这种动作发生后立即结束。如：open,die,close,begin,finish,come,go,move,borrow,lend,buy等。2. 非延续性动词在肯定句中与表示时间点的状语连用，如：twoyearsago;at5oclock例:Hedied5yearsago.3. 否定的终止性动词可以与表示时间段的时间状语连用。例:Ihaventleftherefor3years.Ihaventheardfromhimfor3weeks.三 .延续性动词与非延续性动词之间的转换leave-beaway,borrow-keep,buy-have,begin/start-beon,die-bedead,finish-beover,join-bein+组织机构,beamemberof+组织机构,opensth-keepsthopen,fallill-beill,getup-beup,catchacold-haveacold,comehere-behere,gothere-bethere,become-be,comeback-beback,fallasleep-beasleep,getto/arrive/reach-be(in),leave-beawayfrom,gettoknow-know,go(get)outfbeout,putonfwear,catchacoldfhaveacold等。等。例:Theoldmandied4yearsago.Theoldmanhasbeendeadfor4years.HejoinedtheParty2yearsago.HehasbeeninthePartyfor2years.Iboughtthebook5daysago.Ihavehadthebookfor5days.补充练习1. Whenhearrivedatthebusstop,thebusfor20minutes.A.hasleftB.hadleftC.hasbeenawayD.hadbeenaway2. ItheLeaguefor5yearssofar.A.joinedB.havejoinedC.havebeenin3. ThefactorysincetheFebruaryof1988.A.hasbeenopenB.hasopenedC.wasopenD.opened4. MaryandRosefriendssincetheymetin2000.A.havemadeB.havebeenC.madeD.havebecome5. Youmustntuntilhecomesback.A.beawayB.leaveC.beleft6. Themeetingforaweeknow.A.hasfinishedB.hasendedC.hasbeenover7. MissGaothisschoolfornearly5years.A.hasbeeninB.hascometoC.hastaught8. Benateacherfor4years.A.hasbeenB.hasbecomeC.wasD.became9. Ihomeforaweek.A.havereturnedB.havebeenbackC.returned10. Howlonghe?A.diedB.has,diedC.has,beendead11. Heateightyesterdayafternoon.A.sleptB.wassleepingC.hassleepD.hadslept12. Hethecarforaweek.A.boughtB.hasboughtC.hashad13. Howlongyouill?Twoweeks.A.didfallB.have,fellC.have,been14.Since2000,hehishometown.A.hasleftB.hasmovedawayC.hasbeenawayfrom15.Illlendyouthebook,butyoucanonlyitfor2days.A.borrowB.keepC.take16. Thebusontheroadfor2hourssofar.A.hasstoppedB.stoppedC.hasbeen17. Areyouthejacketthesedays?A.wearingB.puttingonC.dressingD.on18. Hefoe2hours.A.gotupB.hasgotupC.hasbeenup19. Tomisillinhospital.Heacoldforseveraldays.A.isB.catchesC.hascaughtD.hashad20. HowlongcanIthebook?Twoweeks.A.borrowB.lendC.getD.keepKey1-5DCABB;6-10CAABC;11-15BCCCB;16-20CACDDQ垃Q