2019春八年级英语下册Unit10I’vehadthisbikeforthreeyears语法专练课件新版人教新目标版.ppt

Unit10Ivehadthisbikeforthreeyears.,现在完成时(三)1.延续性动词。延续性动词表示能够延续的动作,如work,keep,have,sleep,live,stay等。可以与表示时间段的状语连用。2.非延续性动词。非延续性动词又称短暂性动词或终止性动词,表示不能延续的动作,这种动作发生后立即结束,如open,die,close,come,go等。在肯定句中与表示时间点的状语连用,在否定句中可以与表示时间段的时间状语连用。,3.延续性动词与非延续性动词的转换。,非延续性动词的完成时态表示动作完成并产生了影响或结果。一般不能与表示时间段的状语连用。若与表示时间段的状语连用,则要把非延续性动词变成相应的延续性动词。常见动词的转化如下表:,4.since和for的用法。since和for都可用于现在完成时,for后面接一段时间,表示动作的持续时间;since后面接时间点,表示动作的起始时间点。例如:Ihavebeenherefortwoyears.我已经在这里待了两年了。Ihavebeenheresince2005.自2005年开始我就在这里。,.根据句意用for或since填空1.Ihavekeptthedictionaryfortwoweeks.2.Ihaventheardfromhimsincelastyear.3.Myunclehastaughtatthisschoolsincetenyearsago.4.AuntWangcameherelastyear.Shesbeenhereforaboutayear.5.GreatchangeshavetakenplaceinmyhometownsinceIleftthere.,.根据句意用所给词的适当形式填空1.Ihavebeen(be)atworksinceeightoclock,butImleavingsoon.2.Wehaventmet(notmeet)eachotherforfiveyears.Bothofusleft(leave)thefactoryfiveyearsago.3.Iwaited(wait)attherestaurantforanhour,andthenIleft.4.Wemustgetanewcar.Wehavehad(have)thisonefortenyears.,.单项填空(A)1.Howlonghaveyou?Foralmost10years.A.ownedthisgardenB.boughtthiscarC.arrivedinShanghaiD.cometothistown(C)2.WillyouwatchtheprogramKeepRunninginZhejiangTVtonight?Yes,ofcourse.Itoneofthemostpopularshowssince2015.A.wasB.becameC.hasbeenD.hasbecome,(A)3.Since2009,ModernFamilyusthefunny,sadandmovingstoriesofthreeAmericanfamilies.A.hasgivenB.willgiveC.gaveD.gives(C)4.Ist