英语人教版八年级下册Unit 10 section A3a-3c.ppt

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1、SectionA3Grammarfocus–4cUnit10I'vehadthisbikeforthreeyears.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现在完成时过去的动作或状态，一直持续到现在，for、since把时间带。e.g.Myu

2、nclehasworkedatthisfactoryfortenyears.=Myunclehasworkedatthisfactorysincetenyearago.I’ve livedheresince1990．自从1990年以来我就住在这里。Ihaven’t seenhimforthree years.我三年没有看见他了。瞬间动词的肯定式不能和时间段连用。但其否定式可以和时间段连用。因为，其否定式表示的是一种状态，而状态总是可以延续的。如：Ihaven’tseenhimforalongtime

3、.我很久没见到他了。Hehasn’tcomehereforsometime.他有段时间没来了。Ihaven’theardfromhersincesheleft.自她离开以后，我一直没收到她的来信。*HehascometoBeijingfortwoyears.HehasbeeninBeijingfortwoyears.*Hehasboughtthatbookforthreeweeks.Hehashadthatbookforthreeweeks.*HehasjoinedtheArmyforoneanda

4、halfyears.Hehasbeeninthearmyforoneandahalfyears.ItistwoyearssincehecametoBeijing.Itisthreeweekssinceheboughtthatbook.ItisoneandahalfyearssincehejoinedtheArmy.×××改错*Hisgrandmahasdiedforninemonths.Hisgrandmahasbeendeadforninemonths.Itisninemonthssincehis

5、grandmadied.×puton—wearcatchacold—haveacoldgettoknow—knowgoout—beoutfinish—beoverfallasleep—beasleepjoin—bein/beamemberofbecome—bemakefriends—befriends非延续性动词和延续性动词之间的转换瞬间性动词延续性动词come—be(in)buy—haveborrow—keepleave—beawaydie—bedeadstop—beoverbegin/start

6、—beonopen----beopenclose----beclosed1.这本书我买了5年了。Ihaveboughtthebookforfiveyears.()I’vehadthebookforfiveyears.()×√判断正误2.你哥哥参军多长时间了？Howlonghasyourbrotherjoinedthearmy?()Howlonghasyourbrotherbeeninthearmy/beenasoldier?()×√KittyhasleftBeijingfortwodays.Kitt

7、yleftBeijingtwodaysago.KittyhasbeenawayfromBeijingfortwodays.Kittyhasboughtherpursesincelastyear.Kittyboughtherpurseayearago.Kittyhashadherpurseforayear.√√√√4aRewritethesentencesusingfororsince.1.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhun

8、gry.Theirlastmealwastenhoursago.3.Ihaveacamera.Iboughtitin2009.JimhasbeeninJapanforthreedays.Theyhavenoteatenfortenhours.Ihavehadacamerasince2009.4.IknowAnn.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.IhaveknownAnnaforth