八年级英语下册 Unit 10 Section A 3.ppt

Unit10 Unit10I vehadthisbikeforthreeyears SectionA3Grammarfocus 4c 1 Howlonghaveyouhadthatbikeoverthere I vehaditforthreeyears 2 Howlonghashissonownedthetrainandrailwayset He sowneditsincehisfourthbirthday 3 Haveyoueverplayedfootball Yes IdidwhenIwaslittle butIhaven tplayedforawhilenow 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 段时间 since 过去点时间 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 velivedheresince1990 Ihaven tseenhimforthreeyears 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 sbeenatthisschoolsincefiveyearsago 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 beongoout beoutclose beclosedopen beopengetto arrive reach be in die bedeadleave beaway finish beoverfallsleep beasleepjoin bein beamemberofbecome bemakefriends befriendscome go be 相应的介词短语 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 haven tbeen miss 5 Thismuseum be hereforover20years It be oneoftheoldestbuildingsinthissmalltown hasbeen is 4c Fillintheque