2014新版八年级下册Unit10SectionA(GrammarFocus-4c)

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1、Unit10I'vehadthisbikeforthreeyears.SectionA3Grammarfocus–4c1.Howlonghaveyouhadthatbikeoverthere?I’vehaditforthreeyears.2.Howlonghashissonownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.3.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.boughtthebike        

2、      now________

3、_______________________________

4、__________20086years2014HowlonghasJeffhadthisbike?Jeffhashadhisbikefor6years.Jeffhashadhisbikesince6yearsago.Jeffhashadhisbikesince2008.HowlonghasJeffhadthisbike?WhendidJeffbuyhisbike?Answerthefollowingquestions:Heboughtitin2008.Jeffhashadhisbikefor6

5、years.时间状语:1.for+一段时间e.g:for8years2.since+过去的时间点e.g:since19993.since+一段时间+agoe.g:since23yearsago语法:现在完成时含义:表示动作从过去某一时间开始一直延续到现在。这一动作可能刚刚开始,也可能在继续,其动作是否继续下去,由上下文而定。这个时态多用于延续性动词。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

6、可以相互转换。PresentPerfectTense现在完成时e.g.Myunclehasworkedatthisfactoryfortenyears.=Myunclehasworkedatthisfactorysincetenyearago.I’ve lived heresince1990．自从1990年以来我就住在这里。I haven’t seen himforthree 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 schoolsincefive yea

7、rs 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—wearcatchac

8、old—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—beongoout—beoutclose—beclosedopen—beopengetto/arrive/reach—be(in)die—bedeadleave—beawayfinish—beoverfallsleep—beasleepjoin—bein/beamemberofbecome—bemakefriends—befriendscome/go/—be+相应的介词短语1.She_______thisbo

9、okfornearlythreeweeks.A.hasborrowedB.haslentC.hasboughtD.haskept2.Tenyearshaspassed____theCCTVeventPeopleWhoMovedChinatookplacein2002.A.whenB.whileC.beforeD.since√√Exercises4aRewritethesentencesusingf