八年级英语下册Unit10SectionA3(教育精品).ppt

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1、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，可以和表示或状态，可以和表示“从过去某一时刻从过去某一时刻延续到现在的一段时间状语延续到现

2、在的一段时间状语”连用，如连用，如“for+段时间段时间”、“since+过去点时间过去点时间”、“since+过去时的从句过去时的从句”、“since+一段时间一段时间+ago”。且。且for与与since引导的时间状语可以相互转换。引导的时间状语可以相互转换。e.g.Myunclehasworkedatthisfactoryfortenyears.=Myunclehasworkedatthisfactorysincetenyearago.Ivelivedheresince1990Ihaventseenhimforthreeyears.含有含有for，since的现在完成时的用法歌诀的现在完

3、成时的用法歌诀:过去的动作或状态，一直持续到现在，过去的动作或状态，一直持续到现在，for、since把时间带。把时间带。Shesbeenatthisschoolsincefiveyearsago.此种用法中表示持续性的动作或状态的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动词必须是延续性动词(否定句除外否定句除外)。1.这本书我买了这本书我买了5年了。年了。Ihaveboughtthebookforfiveyears.()Ivehadthebookforfiveyears.()2.你哥哥参军多长时间了？你哥哥参军多长时间了？Howlonghasyourbrotherjoinedt

4、hearmy?()Howlonghasyourbrotherbeeninthearmy/beenasoldier?()1.转换为相应的延续性动词，用于现在完转换为相应的延续性动词，用于现在完成时。成时。borrowkeepbuyhaveputonwearcatchacoldhaveacoldgettoknowknowgettosleepsleep2.转化为转化为“be+形容词形容词/副词副词/介词介词/名名词词”begin/startbeongooutbeoutclosebeclosedopenbeopengetto/arrive/reachbe(in)diebedeadleavebeaway

5、finishbeoverfallsleepbeasleepjoinbein/beamemberofbecomebemakefriendsbefriendscome/go/be+相应的介词短语相应的介词短语4aRewrite the sentences using for or since.1.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavebeenhungryfortenhours/sincetenhoursago.JimhasbeeninJapanf

6、orthreeyears.3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.4bFill in the blanks with the correct forms of the verbs in brackets.1.I_(neverbe)toth

7、ewaterparkbefore.Iwantto_(go)nextmonthbeforetheweathergetstoocold.2.2.They_(neverown)anypets,butthey_(alwayswant)tohaveadog.haveneverbeengohaveneverownedalwayswant3.We_(have)apianosincelastNovember.We_(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy_(notbe)backtotheirhometownfortwoye

8、ars.They_(miss)theirhometownalotandhopetovisittheplacenextyear.havehadboughthaventbeenmiss5.Thismuseum_(be)hereforover20years.It_(be)oneoftheoldestbuildingsinthissmalltown.hasbeenis4cFill in the questions and ask two students.Then complete the chart.1.Doyouhavea(n)_?Howlonghaveyouhadit?2.Doyouowna(n)_?Howlonghaveyouownedit?ThingsHow longTonyfavoritebook fortwoyearsbasketballsincehewas10yearsoldStudent1Student2