现在完成时课件延续性a.ppt

改 错 1. The film has started for an hour. . 2. I have borrowed this book for two weeks. 3. Kitty has bought a book since last week. 4. Our manager isn’t in today. He has been to Guangzhou. been on kept gone 下一页 上一页 主菜单 had 1.用法 （1） （2） 2.标志词： for since 3.短暂性动词——延续性动词 C:Oh,my God!So many flies! W:Don’t worry,sir.They are not dirty at all. C:Why? W:Because they have been in the kitchen since they were born. And the kitchen is always very clean. Grammar 主语+have/ has + done (过去分词) 过去分词(pp)其变化方法和动词过去式基本相同。有部分不同，需要记好。 现在完成时的结构 一.表示过去发生或已完成的某一动作对现在造成的影响和结果。 上一页 下一页 He has just turned off the light. (他刚把灯关了。) 相当于：He turned off the light just now. The light isn’t on now. 即关灯这一动作对现在造成的结果和影响：现在灯不亮了。 I have already finished my homework. (我已经完成了家庭作业。) 主菜单 如:already, never, ever, just, yet, before, so far, in the past few years，twice等 上一页 下一页 主菜单 Have/has been to … 意思是“到过，去过”，表示曾经到过某处，但现在人不在那儿。 have /has gone to… 意思是“去了”，表示已经去了某地，现在人可能在去的途中或已在那儿了。 上一页 下一页 主菜单 上一页 主菜单 1.我已经看过这部电影了 I have seen the film already. 2.你吃午饭了没有？ Have you had lunch yet? 3.她还没有完成作业。 She hasn’t finished her homework yet. 4.吉姆和他的家人去了伦敦。 Jim has gone to London with his family. 二、表示发生在过去持续到现在，并且有可能一直持续下去。 常和since…,for…等连用。 M:I have studied English for six years. 我学英语已经六年了。 They have lived in Beijing since 1980. 他们自１９８０年就一直住在北京。 We’ve known each other since we were children. 我们从小就认识。 上一页 下一页 主菜单 ★ 1、since Mr. Smith has worked here since 1984. （自从1984年以来，史密斯先生一直在这工作。） I have known Daniel since 7 years ago. 自从7年前我就认识丹尼尔。 He’s learned about 500 words since he went to college. （他上大学以来大约学了五千个英语单词） 上一页 下一页 主菜单 一个时间点（过去的年份） 一段时间＋ago 一般过去时的从句 ★2、for＋一段时间 （two weeks/six months/five days）for短语表示动作延续多长时间 。 He has taught in this school for four years. I haven’t seen her for a long time. 上一页 下一页 主菜单 上一页 主菜单 选用 for和 since填空: 1.We haven’t seen each other ______ a long time. 2.His father has been in the Party ______ 10 years ago. 3.The film has been on ______ 20 minutes