Unit 8 Section A GF现在完成时2024-2025学年人教版英语八年级下册

Unit 8 Have you read Treasure Island Yet? GF 1、 概述 1. 定义：以现在为参照，已经完成的事，翻译为“已经”。 2. 一般过去时&现在完成时 eg. I bought this bike yesterday. （陈述事实） I’ve bought this bike, so I can ride it with you. （过去的事对现在造成了影响） 2、 结构 1. have/has + done 助动词 过去分词 eg. I have had this book for a week already. 2. done（过去分词） 规则变化（同过去式） play → _______ → _______ study → _______ → _______ hope → _______ → _______ drop → _______ → _______ We have _______ (学习) English for 10 years already. 不规则变化P136-137 3、 句型变化 肯定句：主语+have/has+过去分词+其他. Tim has already read this story three times. 否定句：主语+have/has not+过去分词+其他. ____________________________________ 一般疑问句：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. ____________________________________ 特殊疑问句：特殊疑问词+have/has+主语+过去分词+其他? ____________________________________ 什么故事他读了四次？ ____________________________________ 这个故事他读了多少次？ 4、 用法 1. 过去已经结束的事，对现在造成了影响，一般already, yet连用 I’ve already made the breakfast. Let’s eat! He hasn’t known the answer yet. Has he known the answer yet? ________ 通常用于肯定句中，一般用于have/has之后，实义动词前，也可放在句尾。 ________ 通常用于否定句和疑问句中，一般放在句末。 2. 到目前为止的生活经历，一般与once，twice，three times，never，ever(常用疑问句)连用 ________ you ever ________ Harry Potter yet? (read) He ________ Yu Gong Moves the Mountain twice. (read) They ________ never ________ the museum. (visit) 3. 动作从过去开始，一直持续到现在 *动作的处理 a. 本身是延续性的动词，直接用 study—studied—studied have—had—had Lee has played the piano for 12 hours. b. 动作不是持续性的 buy—own/have borrow—keep die—be dead get married—be married leave—be away arrive—be in This couple got married ten years ago. This couple have been married for ten years. *时间段的处理 a. for + 时间段 ten years; a while, 2 days. a century b. since 自从 时间点 since 2025；从句 since he was 8 years old c. so far 到目前为止 d. recently 最近 学科网（北京）股份有限公司 $$