Unit8 SectionA Grammar-4c课件 2022-2023学年人教版八年级英语下册

Unit 8 Have you read Treasure Island yet? Section A Grammar-4c By Emmy Learning aims To learn some new words: fiction, technology, French… To learn the present perfect tense with “already” and “yet”. Try to read more classical literature. Have you read Little Women yet? Yes, I have. / No, I haven’t. Has Tina read Treasure Island yet? Yes, she has. She thinks it’s fantastic. Have you decided which book to write about yet? Yes, I have. I’ve already finished reading it. It was really good. Grammar Focus Read each sentence and find out what they have in common. 用法： 1.表示过去发生或已经完成的某一动作对现在造 成的影响或结果。 e.g. –Have you had your lunch yet? –Yes, I have. I’ve just had it. (现在我不饿了。) 现在完成时 2. 表示动作或状态从过去某一时刻开始，一直 延续到现在，而且可能还要继续下去。 e.g. I haven’t seen her these days. I’ve known Bob for three years. I’ve been at this school for over two years. 时间状语： already, yet, just, ever, never, before 现在完成时的构成 肯定句: 主语+have/has + 动词过去分词+其他 否定句: 主语+haven’t/hasn’t +动词过去分词+其他 一般疑问句：Have/Has +主语+动词过去分词+ …? 肯定答语: Yes, 主格代词+ have/has. 否定答语: No, 主格代词+ haven’t/hasn’t. see-saw-seen; be-was, were-been eat-ate-eaten; break-broke-broken go-went-gone; take-took-taken send-sent-sent; find-found-found make-made-made; have-had-had 动词过去分词的变化形式大部分与动词过去式形式相同，但是不规则动词的变化形式没有规律，需要记忆 Have you ever seen the film “Harry Potter”? I’ve spent 3 years in the countryside. 1.表示动作到现在为止已经完成或刚刚完成 现在完成时的用法 2.动作发生在过去，强调对现在的结果、影响等 I have finished my work. We have set up many new factories. I’ll go home as soon as I have finished my homework. Please lend me that book if you have finished reading it. 3.现在完成时可以用在条件或时间状语从句中，表示将来某个时刻之前已经完成的动作。 例 句 already “已经”，常用于肯定句中。一般置于助动词have/has之后，v.-ed 之前，但也可以放在句末。 just “刚刚”，常用于肯定句中。一般置于助动词have/has之后，v.-ed 之前。 yet 在现在完成时句型中常置于句末： “已经”，常用在疑问句中, 2) “还，仍然”，常用于否定句和疑问句 与 already; just; yet 连用 1. He ____ not ______ (begin) to work ____. 2. I ____________ (finish) my homework _______. 3.