初中英语现在完成时教学教材.ppt

现在完成时 说课人：学大城西校区 初中英语组 王林瑗 三、教学内容及流程 现在完成时的定义 现在完成时的基本结构 现在完成时的标志词 瞬间性动词转化为延续性动词 have/has been to 与 have/has gone to的区别 现在完成时与一般过去时的区别 春天还会远吗 ? will it still be far in spring? 冬天已经来了, Winter has already come, 现在完成时态 Winter has already come. 现在完成时的构成形式 have done has 助动词 过去分词 用来表示之前已经发生或完成的动作或状态，而其结果却和现在有联系: 动作或状态发生在过去,但它的影响现在还存在。 They have left. --他们已经离开了,也就是说现在他们人不在这里 I have had my lunch. --我已经吃过午饭了,也就是说我现在不饿 现在完成时的含义 也可表示持续到现在的动作或状态。 He has learned English since 2001. --从2001年开始学的,现在还在继续学着呢 now past future 一般过去时 现在完成时 现在完成时 表示的是在过去某个时间开始并持续到现在的动作/状态, 或者发生在过去却对现在造成的影响 They have left. He has learned English since 2001. 和现在完成时连用的时间状语 Meaning Example already 已经 I have already done my homework. yet 还（未） I have not finished my homework yet. never 从不，从没 I have never read this story. ever 曾经 Have you ever watched this film? recently 最近 We have not seen Nancy recently. just 刚刚 He has just seen Nancy. for+时间段 …时间 She learned English for nine years. since+时间点 自从… I have not eaten anything since 9 a.m. in the past… 在过去的… He has changed a lot in the past three years. 延续性动词：表示可以延续一段时间的动作或状态。如：be,drink,fly,eat,keep,lie,live,rain等。 瞬间性动词：表示不能延续的动作，即动作发生后立即结束。如：begin,arrive,borrow,buy,break,close,come,fall,finish,go,leave,lend,mary,reach,receive,open,,start,stop等。 瞬间性的动词是不能持续的，所以不能和表示一段时间的状语连用。 比较延续性动词与瞬间性动词? ? since 用来说明动作起始时间— “自从……” for用来说明动作延续时间长度— “长达……” 　　I have lived here for more than twenty years.　　I have lived here since I was born. 　　My aunt has worked in a company since 1949.　 　　I have not heard from my uncle for a long time. 比较since和for 二、用since和for填空1.____two years 2.____two years ago3.___last month 4.___ 19995.___yesterday 6.__4 o’clock7__4 hours 8.___an hour ago9.___we were children 10.__ lunch time11.___ she left here12. He has lived in Nanjing __ the year before