Unit4 Grammar in use：Present perfect现在完成时课件 2025-2026学年沪教版（五四制）英语七年级上册

现在完成时 Present Perfect 1 Yes, I have, I’ve just had it. Have you had your lunch yet? yet：现在完成时标志词 疑问句句末：已经 否定句句末：还，尚未 Have you seen it yet? 你已经看过它了吗？ I haven’t seen it yet. 我还没有看过它。 现在完成时情景问答 Think and Answer 1.吃饭的动作发生在什么时候？ 发生在过去 2.现在还需要吃饭吗？ 不需要吃了 past now She has just had it. She has just had it, so she needn’t have it now. 现在完成时情景问答分析 Part 1：现在完成时的定义 DEFINITION 4 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just、ever、never、yet、 already、before连用。 例： I have already had lunch. 我已经吃过午饭了。 表示现在不饿了，不用吃了 现在完成时的定义 现在完成时的定义 2、表示从过去某一时刻开始一直持续到现在的动作或状态。常与时间状语for、since、in the past few years、in the last few years连用。 例： I have lived here for five years. 我住在这里五年了。 表示过去到现在持续性住了五年这一状态 现在完成时的定义 3、表示说话前发生过一次或多次的动作，现在成为一种经验，一般在汉语中译为“过”。常与twice、three times等连用。 例： Lily has been to London twice. 丽丽去过伦敦两次。 表示多次去过，所以她了解伦敦的情况 Part 2：现在完成时的结构 STRUCTURE 现在完成时的结构之肯定句 例：I have learned English for eight years. 我学英语八年了。 She has learned English for eight years. 我学英语八年了。 注意！当主语是第三人称单数时用has，其他人称用have 现在完成时的结构之否定句 例：I haven’t finished my homework. 我没有完成作业。 She hasn’t finished her homework. 她没有完成作业。 have not=haven’t has not=hasn’t 现在完成时的结构之一般疑问句 例：Have you finished your homework. 你完成作业了吗？ Has she finished her homework. 她完成作业了吗？ 将have/has提前 一般疑问句怎么回答？ 肯定回答：Yes,主语+have/has. 否定回答：No,主语+haven’t/hasn’t. 例：-Have you finished your homework. -Yes,I have. 是的，我完成了。 -No,I haven’t. 不，我没完成。 -Has she finished her homework. -Yes,she has. 是的，她完成了。 -No,she hasn’t. 不，她没完成。 现在完成时的结构之特殊疑问句 例：How long have you been here? 你来这里多长时间了？ Where has she gone? 她去了哪里？ 练一练 I’ve already arrived.（改为一般疑问句） _______ you ________ _____? 2.He has just finished the task.（改为否定句） He________ _________ the task____. 3.John’s gone to England with his family.（改为否定句） John_______ ______to England with his family. Have arrived yet hasn’t finished yet hasn’t gone Part 3：现在完成时过去分词的变化规则 CHANGES 过去分词的变化规则：规则变化 1.直接+ed 2.e结尾+d 3.重读闭音节结尾 双写辅音+ed 4.辅音+y结尾 变y为i+ed work hope stop study worked hoped stopped studied 规则变化 过去分词 原型 finish visit ask help plan stop live carry 写出规则动词的过去分词 carried finished visited asked helped planned stoped lived 过去分词的变化规则：不规则变化 cost-cost-cost hit-hit-hit cut-cut-cut buy-bought-bought lend-lent-lent find-found-found come-came-come run-ran-run become-became-become go-went-gone fly-flew-flown take-took-taken AAA型 ABB型 ABA型 ABC型 draw begin eat fall keep know lose meet 写出不规则动词的过去分词 met drawn begun eaten fallen kept known lost 练一练 他已经把灯关了。 ___________________________ 2.我们已经看过那部电影了。 ___________________________ 3.你去过北京吗？ ___________________________ He has turned off the light. We have seen that film before. Have you ever been to Beijing? 请翻译句子。 Part 4：现在完成时易错点分析 DIFFERENCE 现在完成时易错点 一、have/has been to 与have/has gone to的区别 ①.“have/has been to+地名”表示“去过某地，已经回来了”. 例：He has been to America. 他去美国了。（现在已经回来了，人在这里） ②.“have/has gone to +地名”表示“去某地还没有回来”。 例：He has gone to America. 他去美国了。（已经动身去了，人不在这里） 1.My friends the Great Wall twice. 2. you ever Xiamen? 3.He the restaurant, he isn’t here. 4.She Shanghai, she isn’t here. have been to been to has gone to 练一练 “去而已归”用have/has been to； “去而未归”用have/has gone to. Have has gone to 现在完成时易错点 二、already和yet的用法 ①.already多用于肯定句，而yet多用于疑问句或否定句。例： The guests have already arrived.客人已经到了。 The guests have not arrived yet.客人还没到。 ②.already有时也可用于疑问句中表示惊讶、怀疑，或者表示期望有一个肯定的回答。例： Have you had your lunch yet?你吃过午饭了吗？（一般疑问句） Have you had your lunch already?你已经吃过午饭了？（表示惊讶） 1.She has been a good dancer. 2.She has been a dancer. 3.He hasn’t solved the case . 4.Has he solved the case ? already already yet yet 练一练 already常用于肯定句；yet常用于否定句或疑问句 Part 5：即时训练 PRACTICE $