Language现在完成时.ppt

现在完成时 构成 用法 现在完成时与一般过去时的区别 Have been to 与 Have gone to 延续性动词与非延续性动词 常和表示从过去某一时刻延续到现在的一段时间的状语连用.如： for+时间段 for12 weeks/three minutes since+ 时间点(起点)since 9 oclock this morning since＋一段时间＋ago＝for＋时间段; since two weeks ago=; for a year=; since 2000= since+从句(常用一般过去时) The Greens have lived in Beijing since they moved to Beijing from Paris. 注意： come, go, leave, arrive, join, buy, die, bury(埋葬), marry等动词表示的动作是一时的，不能延续的，因此不能与for, since等表示一段时间的状语连用。 * * NO.1 finish finished finished 原形 过去式 过去分词 lose lost lost see saw seen ------------------------------------------ ------------------------------------------ GO She has finished her homework. We have seen the film. I have lost my wallet. GO 肯定句： 助动词 have（has）+ 过去分词 否定句： 助动词 have（has）+ not +过去分词 一般疑问句： 助动词 have（has）+ 主语+过去分词 (丢的动作对现在来说已经过去, 对现在造成的结果就是手表没有了,还找不到.) 1.表示过去发生或已经完成的动作对现在造成的影响或结果. 常与yet（已经，还，用于疑问或否定句）, already（已经，用于肯定句）, just（刚刚）, ever（曾经）和never（从来不）等副词连用.) I have lost my watch. 我把我的手表给丢了. GO 用法 A: Have you finished your homework yet? B: I have already finished it. B A: 你已经完成作业了吗？ B: 我已经完成了． A: Have you finished your homework yet? B: I’ve just finished it. B A: 你已经完成作业了吗？ B: 我刚刚完成了． Have you finished your homework yet? A: B: No, I haven’t finished it yet. B 你已经完成你的作业了吗？ A: B: 不,我还没有完成作业． A: Have you ever been to Canada? B: No, I’ve never been there. B A: 你曾经去过加拿大吗？ B: 我从来没有去过那里． I have lived here since 2004. I have lived here since I came here. She has been in Canada for seven years. 2.表示过去已经开始, 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的状语连用.表示持续动作或状态的词应是延续性动词.常与since + 过去的时间点，for + 一段时间，up to now/present, so far, in the last/past …years 等时间状语连用。 GO for two weeks since a year ago for 9 years 1. --- Have you ____ been to Beijing? --- No, _____. 2.I have ______ finished my work. 3.I have finished my work_______. 4.Have you finished your work______? 5.She has taught English _____ 10 years. 6.He has worked in the factory ______three years ago. 7.I have learnt 2000 English words_