单击此处编辑母版标题样式单击此处编辑母版文本样式第二级第三级第四级第五级*Unit10Unit10I'vehadthisbikeforthreeyears.SectionA3Grammarfocus–4c1.Howlonghaveyouhadthatbikeover there? I’vehaditforthreeyears.2.Howlonghashissonownedthetrain andrailwayset? He’sowneditsincehisfourthbirthday.3.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’t playedforawhilenow.表示从过去已经开始持续到现在的动作或状态，可以和表示“从过去某一时刻延续到现在的一段时间状语”连用，如“for+时间段”、“since+过去时间点”、“since+过去时的从句”、“since+一段时间+ago”。且for与since引导的时间状语可以相互转换。PresentPerfectTense现在完成时e.g.Myunclehasworkedatthisfactoryfortenyears.=Myunclehasworkedatthisfactorysincetenyearago.I’ve lived here since 1990．自从1990年以来我就住在这里。  I haven’t seen him for three years.我三年没有看见他了。  含有for，since的现在完成时的用法歌诀:过去的动作或状态，一直持续到现在，for、since把时间带。歌诀She’s been at this school since five years ago.  自从五年前以来她就在这个学校。  此种用法中表示持续性的动作或状态的动词必须是延续性动词(否定句除外)。1.这本书我买了5年了。Ihaveboughtthebookforfiveyears.()I’vehadthebookforfiveyears.()×√句中动词的特点2.你哥哥参军多长时间了？Howlonghasyourbrotherjoinedthearmy?()Howlonghasyourbrotherbeeninthearmy/beenasoldier?()×√1.转换为相应的延续性动词，用于现在完成时。borrow—keepbuy—haveputon—wearcatchacold—haveacoldgettoknow—knowgettosleep—sleep非延续性动词和延续性动词之间的转换2.转化为“be+形容词/副词/介词/名词” begin/start—beon goout—beout close—beclosed open—beopen getto/arrive/reach—be(in) die—bedead leave—beawayfinish—beoverfallsleep—beasleepjoin—bein/beamemberofbecome—bemakefriends—befriendscome/go/—be+相应的介词短语1.She_______thisbookfornearlythreeweeks.A.hasborrowedB.haslentC.hasboughtD.haskept2.Tenyearshaspassed____theCCTVeventPeopleWhoMovedChinatookplacein2002.A.whenB.whileC.beforeD.since√√Exercises4aRewritethesentencesusingfororsince.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavebeenhungryfortenhours/sincetenhoursago.JimhasbeeninJapanforthreeyears.3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.4bFillintheblankswiththecorrectformsoftheverbsinbrackets.I_______________(neverbe)tothewaterparkbefore.Iwantto_____(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey___________(alwayswant)tohaveadog.haveneverbeengohaveneverownedalwayswant3.We_________(have)apianosincelast November.We_______(buy)itfrom theLifamilywhentheymovedtothe USlastyear.4.CathyandAmy____________(notbe) backtotheirhometownfortwoyears. They______(miss)theirhometowna lotandhopetovisittheplacenextyear.havehadboughthaven’tbeenmiss5.Thismuseum_________(be)herefor over20years.It_____(be)oneofthe oldestbuildingsinthissmalltown. hasbeenis4cFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n)_______?Howlonghaveyouhadit?2.Doyouowna(n)_______?Howlonghaveyouownedit?ThingsHowlongTonyfavoritebookbasketballfortwoyearssincehewas10yearsoldstudent1Student2