英语人教版八年级下册unit10语法.ppt

Unit10I vehadthisbikeforthreeyears Grammarfocus 4c 现在完成时PresentPerfectTense 1 过去某一动作 行为对现在的影响eg IhaveleftBeijing 2 过去某一动作 行为一直持续到现在eg IhavebeenawayfromBeijingfor3days 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 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 1 She thisbookfornearlythreeweeks A hasborrowedB haslentC hasboughtD haskept2 Tenyearshaspassed theCCTVeventPeopleWhoMovedChinatookplacein2002 A whenB whileC beforeD since Exercises 4a Rewritethesentencesusingfororsince JimisinJapan Hearrivedtherethreedaysago 2 Theyareveryhungry Theirlastmealwastenhoursago Theyhaven teatenfortenhours 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 Fillinthequestionsandasktwo