英语人教版八年级下册unit 10 grammer--4c.ppt

Unit10,Unit10Ivehadthisbikeforthreeyears.,SectionA3Grammarfocus4c,1.Howlonghaveyouhadthatbikeoverthere?Ivehaditforthreeyears.2.Howlonghashissonownedthetrainandrailwayset?Hesowneditsincehisfourthbirthday.3.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaventplayedforawhilenow.,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.Ivelivedheresince1990自从1990年以来我就住在这里。Ihaventseenhimforthreeyears.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,Shesbeenatthisschoolsincefiveyearsago.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.()Ivehadthebookforfiveyears.(),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。borrowkeepbuyhaveputonwearcatchacoldhaveacoldgettoknowknowgettosleepsleep,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/startbeongooutbeoutclosebeclosedopenbeopengetto/arrive/reachbe(in)diebedeadleavebeaway,finishbeoverfallsleepbeasleepjoinbein/beamemberofbecomebemakefriendsbefriendscome/go/be+相应的介词短语,1.She_thisbookfornearlythreeweeks.A.hasborrowedB.haslentC.hasboughtD.haskept2.Tenyearshaspassed_theCCTVeventPeopleWhoMovedChinatookplacein2002.A.whenB.whileC.beforeD.since,Exercises,4a,Rewritethesentencesusingfororsince.,JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.,Theyhavebeenhungryfortenhours/sincetenhoursago.,JimhasbeeninJapanforthreeyears.,3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.,Ihavehadacamerasince2009.,IhaveknownAnnforthreeyears/sincethreeyearsago.,LindahasbeenillsinceMonday.,4b,Fillintheblankswiththecorrectformsoftheverbsinbrackets.,I_(neverbe)tothewaterparkbefore.Iwantto_(go)nextmonthbeforetheweathergetstoocold.2.They_(neverown)anypets,butthey_(alwayswant)tohaveadog.,haveneverbeen,go,haveneverowned,alwayswant,3.We_(have)apianosincelastNovember.We_(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy_(notbe)backtotheirhometownfortwoyears.They_(miss)theirhometownalotandhopetovisittheplacenextyear.,havehad,bought,haventbeen,miss,5.Thismuseum_(be)hereforover20years.It_(be)oneoftheoldestbuildingsinthissmalltown.,hasbeen,is,4c,Fillin