(
课件网) 新目标人教版Go for it 八年级 (下) Unit10 I've had this bike for three years. Section B 3a -Self Check 复习写作课公开课 现在完成时 Let’s enjoy a video. Warm up The present perfect tense(现在完成时） 复习目标： １、熟练掌握现在完成时态的构成、用法及时间状语。 ２、巩固规则动词过去式及过去分词的变化规则。 ３、能正确运用现在完成时态解决考题。 现在完成时的定义 1.过去发生的动作对现在造成的影响或结果。 2.过去已经开始，持续到现在的动作或状态 I had breakfast I have just had /eaten my breakfast. (现在我不饿了) I’m not hungry now I moved here in 2014 I still live here I have lived here for three years. I have lived here since 2010/three years ago. now past Eg: I _____ (learn) English for three years. have learnt 句型结构 肯定句：主语+have/has+过去分词+其他. 否定句：主语+haven’t/hasn’t+过去分词+其他. 一般疑问句及其回答： Have/Has +主语+过去分词+其他？ 肯定回答：Yes,主语+have/has 否定回答：No，主语+haven’t/hasn’t 助动词have / has + 动词的过去分词 1.规则动词的过去分词和过去式相同。 ①直接在原形后+ed? ②词尾是e时，直接加d? ③若词尾为“辅音字母加y”，则变y为i加ed。 ④末尾只有一个辅音字母的重读闭音节，双写末尾辅音字母加ed. 规则变化 总结过去分词的变化规则 现在完成时的构成： eg：stopped? dropped shopped planned preferred chatted 2.不规则动词的过去分词须单独记忆。 主语+have/has+动词的过去分词 Exercise 按要求改写下列句子: 1) They have seen the film already. 否定句： 一般疑问句： 肯定和否定回答： 2)His mother has just done the dishes. 否定句： 一般疑问句： 肯定和否定回答： 小试牛刀 A:这类词常强调动作完成。 already（已经，还，肯定句） yet（否定句，疑问句） never（从来没有） ever (曾经) twice （两次） recently(近来） before（句末） just （刚刚） D B 2011安徽 He promised to pick me up at the school gate. However. he __ yet. A. didn't arrive B. doesn't arrive C. isn't arriving D . hasn't arrived 2011芜湖—China develops so fast. —That’s true. It _____ a lot already. A. changes B. changed C. will change D. has changed 2011襄阳-- Why won’t you go to the movie with me, Gina? - -- Because I _____ it twice. A. see B. have seen C. saw D. will see D 时态的选择，时间状语是关键 现在完成时态句中常见的时间状语 (1)since＋时间段＋ago＝for＋时间段 since two weeks ago= (2)since + 时间点＝for＋时间 Since2003= (3)since+从句(常用一般过去时) 【2012乐山市】—Have you known Dr. Jackson for a long time? —Yes, since she the Chinese Society. A. joined B. joins C. has joined B.表示从过去一直持续到现在的时间. A 自从两周前 自2003年 for two weeks for 14 years C：其他常见的时间状语 in the last /past few years/months 在过去的几年/月里 these days 这些天 so far 迄今为止….. eg: _____you ____ (see) Mr. Black these days . Yes ,I met him when I was walking in the street yesterday. Have seen have/has been to 去过某地表示某人的一种经历,和once,twice,already,ever,never等连用.? 去某地了,说话时某人已离开此地, 在去某地的途中或已在某地 一直在某地(已经一段时间).常和for …, since… how long 等连用.? have/has gone to have/has been（in） 1.— He ... ...
