英语人教版八年级下册Unit !0 Section B.ppt

现在完成时延续性动词和非延续性动词,东洲中学肖琳,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。,延续性动词,延续性动词表示能够延续的动作延续性动词可以与表示时间段的状语连用。如：learnworkstandlieknowwalkkeephavewaitwatchsingreadsleeplivestay等。,表示时间段的短语,For+一段时间如for2years;Since+从句如sincehecamehereSince+时间点名词如：sincelastyear,since5daysago;howlong;foralongtime等,例句,Hehaslivedherefor6years.Youcankeepthebookfor5days.Istayedtherefor2weekslastyear.Howlongdidyoustaytherelastyear?,非延续性动词,非延续性动词也称终止性动词、瞬间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,finish,come,go,move,borrow,lend,buy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.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.,延续性动词和非延续性动词之间的转换,leave-beawayborrow-keepbuy-havebegin/start-beondie-bedeadfinish-beoverjoin-bein+组织机构/beamemberof+组织机构,opensth-keepsthopenfallill-beillgetup-beupcatchacold-haveacoldcomehere-beheregothere-betherebecome-be,getto/arrive/reach-be(in)leave-beawayfromgettoknow-knowgo(get)out-beoutputon-wearcatchacold-haveacoldcomeback-bebackfallasleep-beasleep,例句,Theoldmandied4yearsago.-Theoldmanhasbeendeadfor4years.-Itis4yearssincetheoldmandied.-Fouryearshaspassedsincetheoldmandied.HejoinedtheParty2yearsago.-HehasbeeninthePartyfor2years.Iboughtthebook5daysago.-Ihavehadthebookfor5days.,补充练习,1.Whenhearrivedatthebusstop,thebus_for20minutes.A.hasleftB.hadleftC.hasbeenawayD.hadbeenaway,1.Whenhearrivedatthebusstop,thebus_for20minutes.A.hasleftB.hadleftC.hasbeenawayD.hadbeenaway,2.I_theLeaguefor5yearssofar.A.joinedB.havejoinedC.havebeenin,2.I_theLeaguefor5yearssofar.A.joinedB.havejoinedC.havebeenin,3.Thefactory_sincetheFebruaryof1988.A.hasbeenopenB.hasopenedC.wasopenD.opened,3.Thefactory_sincetheFebruaryof1988.A.hasbeenopenB.hasopenedC.wasopenD.opened,4.MaryandRose_friendssincetheymetin2000.A.havemadeB.havebeenC.madeD.havebecome,4.MaryandRose_friendssincetheymetin2000.A.havemadeB.havebeenC.madeD.havebecome,5.Youmustnt_untilhecomesback.A.beawayB.leaveC.beleft,5.Youmustnt_untilhecomesback.A.beawayB.leaveC.beleft,6.Themeeting_foraweeknow.A.hasfinishedB.hasendedC.hasbeenover,6.Themeeting_foraweeknow.A.hasfinishedB.hasendedC.hasbeenover,7.MissGao_thisschoolfornearly5years.A.hasbeeninB.hascometoC.hastaught,7.MissGao_thisschoolfornearly5years.A.hasbeeninB.hascometoC.hastaught,8.Ben_ateacherfor4years.A.hasbeenB.hasbecomeC.wasD.became,8.Ben_ateacherfor4years.A.hasbeenB.hasbecomeC.wasD.became,9.I_homeforaweek.A.havereturnedB.havebeenbackC.returned,9.I_homeforaweek.A.havereturn