《【精品】八年级英语下册 unit 10 i've had this bike for three years（第3课时(grammar focus-4c)同步语法精讲精练课件 （新版人教新目标版（可编辑.ppt》由会员分享，可在线阅读，更多相关《【精品】八年级英语下册 unit 10 i've had this bike for three years（第3课时(grammar focus-4c)同步语法精讲精练课件 （新版人教新目标版（可编辑.ppt（9页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、八年级英语下册 Unit 10 Ive had this bike for three years（第3课时）(Grammar Focus-4c)同步语法精讲精练课件（新版）人教新目标版现在完成时表示从过去某一时刻延续到现在的动作或状态，常与for，since引导的时间状语连用。for一段时间，since过去时间点或从句(从句的谓语动词用过去式)。eg：I have lived here for twenty years.我住在这里已有20年了。We have built many factories since 1985.自1985年以来，我们建了许多工厂。He has always hel
2、ped me with my English since he came here.自从他到这里以后，他总是帮助我学习英语。有的动词所表示的动作不是瞬间就可以完成的，要持续一段时间，这样的动词叫延续性动词。不能延续下去的动词，叫非延续性动词或瞬间动词。如：buy，borrow等，这些动词在完成时中可改为相应的表示延续性的词或短语来与表 示 一 段 时 间 的 状 语 连 用。如：buyhave，borrowkeep，comebe，joinbe，diebe dead，beginbe on等。eg：He joined the army two years ago.他两年前就参军了。(同义句)He
3、has been in the army for two years.He has been a soldier for two years.二、用for或since填空。6Jill has been in Ireland Monday.7Mr.Liu has been in London three days.8My aunt has lived in Australia 15 days.9Margaret is in her office.She has been there 7 oclock.10India has been an independent country 1974.11T
4、he bus is late.Weve been waiting 20 minutes.12Nobody lives in those houses.They have been empty many years.since for forsincesinceforfor三、同义句转换。13We joined the League in 2015.We the League since 2015.14The meeting has been on for half an hour.The meeting half an hour 15We borrowed the bikes from our friends two days ago.We our friends bikes two days.16Jack left his hometown in 2016.Jack his hometown 2016.17I bought the iPad a week ago.I the iPad a week ago.have been inbeganagohave hadforhas been away fromsincehave hadsince