Module 4 Unit 3 课件 2022-2023学年外研版英语八年级下册

Module 4 Seeing the doctor Unit 3 Language in use. Healthy Living！ 1 知识目标 能力目标 情感目标 能够正确使用现在完成时 与for和since引导的时间 状语从句连用的结构。 能够针对不健康的生活习惯 给出恰当的建议。 能够关心自己及他人健康。 学习目标 Aim 2 Warm up How long have you had your bike? I have had my bike since two years ago. Warm up How long have you studied English? I have studied English for two and a half years. Language practice 1. I haven’t done much exercise since I got my computer last year. 2. I have had him for three months now. 3. Since then, it has become part of my life. Grammar 当表示动作已经完成并对现在有一定影响时，我们一般用现在完成时。同时，可分别 用just, already或yet加以强调或说明。 其结构也是： have / has +动词的过去分词. 常用的时间状语有: already/just 一般置于have/has 之后，用于肯定句中； 在否定句中则要用yet 表示“还，未”。 现在完成时（三） Grammar for 和 since 在现在完成时中的应用 for与since都能与现在完成时连用，但区别较大： （1）for后须接“时间段” He has studied English for five years. 他学英语5年了。 （2）since后须接“时间点” He has studied English since 1999. 他从1999年开始学英语。 Grammar （3）二者可以转换 for + 一段时间 = since + 一段时间 + ago He has been here for five weeks. = He has been here since five weeks ago. 他到这儿已经有五个星期了。 Grammar He has taught here since he came to China. 自从他来到中国就在这儿教书。 We have been friends since we met in school. 我们从在学校见面起就成为了好朋友。 (4) since能引导时间状语从句(主句用现在完成时，从句用一般过去时)，而for则不能。 Grammar （5）现在完成时常用句型： ①It is (has been) +时间段+ since +时间状语或从句 It is four days since last Friday. 从上周五到现在已经四天了。 It has been two years since Jim came to Beijing. 吉姆来北京已经两年了。 Grammar ②This is the first (second…) time that + 从句 句型中的that从句通常使用现在完成时。 This is the first time that Jenny and Danny have been to China. 这是珍妮和丹妮第一次来屮国。 This is the third time that I have seen Karen. 这是我第三次见到Karen。 Grammar （6）均须与延续性动词连用，也可以与非延续性动词的否定式连用。 I have bought this computer since four years ago. (×) I have had this computer since four years ago. (√) I haven’t bought anything for two months.(√ ) I haven't heard from him for 3 weeks. (√) Grammar 实义动词分为: 1) 瞬间动词 2)延续动词 join begin/start borrow finish/end arrive/come leave die buy 瞬间动词 Grammar 瞬间动词 持续动作状态 die leave borrow/