Unit 8 现在完成时课件 2022-2023学年人教版英语八年级下册

现在完成时 Present Perfect Tense 1 目录 CONTENTS 01 定义 02 结构 03 04 标志词 句型转换 2 Sally, clean your room please. But I want to watch TV. 主题色 强调色 正文色 搭配色 3 Mom, I have cleaned my room. 主题色 强调色 正文色 搭配色 4 The room is clean now. I can watch TV. 主题色 强调色 正文色 搭配色 5 我已经打扫了房间。 I have cleaned the room. 我已经完成了作业。 I have finished the homework. 我已经吃过晚饭了。 I have had the dinner. 可以看电视了 可以玩了 已经饱了 发生在过去或者已经完成的动作对现在产生的影响 01 定义1 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。常和already, yet连用。 Do you want to see the film? Sorry. I have already seen the film. I saw it last week. already, yet：已经 区别？ 我已经看过了 （之前看过，现在不想看） I have seen it. 自从遇见你，世界变得好美丽 The world has been beautiful since I met you. （见过她之后，世界到现在都很美丽） 3.他已经和她相遇两次了。 He has met her twice. （现在对她印象更深） 说说下面这些动作对现在产生的影响 1.Someone has broken the window. 2. I have already lost the key. 3. I have just cleaned my hands. 4. Tom has come. 我现在没有钥匙 窗户现在是坏的 手是干净的 汤姆现在在这儿 结构 PART 02 助动词have/has+ 过去分词done 12 过去分词变化规则 规则变化 不规则变化 watch-wahched live-lived plan-planned study-studied 1.直接+ed 2.e结尾+d 3.辅元辅，双写+ed 4.辅+y, y变i加ed P136. 13 句式转换： 【陈述句】 主语 + have/has + done 【简写】 I have = I've we have = we've you have = you've they have = they've he has = he's she has = she's It has = it's 14 句式转换： 【否定句】 主语 + have/has + not + done 【简写】 have not = haven't has not = hasn't 【例句】 I have not found the book. She hasn't paid for the meal. 15 句式转换： 【一般疑问句】 Have/Has + 主语 + done ? 【回答】 肯定：Yes, 人称代词主格 +have/has. 否定：No, 人称代词主格 +haven't/hasn't. 【例句】 —Have you found the book? —Yes, I have. 16 练习：肯定改否定 1.He has finished his work. 2.The world has been beautiful since I met you. 3.He has met her twice. He has not finished his work. The world has not been beautiful since I met you. He has not met her twice. 练习：肯定句改一般疑问句 1.I have finished my work. 改： 2.I have already seen it. 改： 3.He has met her twice. 改： Have you finished your work? Have you already seen it? Has he met her twice? 标志词 PART 03 already yet 肯定句 句中 疑问句 否定句 句末