Module 2 Unit 3 导学案 2022-2023学年外研版英语八年级下册

Unit 3　Language in use ◎语法探究 教材链接 1. Have you ever won any prizes before? 2. I haven't travelled much. 3. They have been to many interesting places. 语法详解 现在完成时(1) 一、用法 现在完成时表示过去某一时间已经发生的行为或曾经做过的事情对目前产生的某种影响或结果(这种影响或结果现在还存在)。常用的时间状语或副词有just，already，never，yet，before，so far等。 二、句式结构 1．肯定句：主语＋have/has＋动词的过去分词 (＋其他)．如： He has already had breakfast. 2.否定句：主语＋haven't/hasn't ＋动词的过去分词 (＋其他)．如： He hasn't had breakfast yet. 3．一般疑问句：Have/Has＋主语＋动词的过去分词 (＋其他)? 肯定回答：Yes, 主语＋have/has；否定回答：No, 主语＋haven't/hasn't.如： —Has he had breakfast? —Yes, he has./No, he hasn't. 三、动词过去分词的构成 1．规则变化 规则动词过去分词和过去式的构成规则相同。 一般在词尾加“-ed” work→worked→worked 以“e”结尾的动词，词尾加“-d” live→lived→lived 以“辅音字母＋y”结尾的动词，将“y” 变为“i”，再加“-ed” cry→cried→cried 以重读闭音节结尾且末尾只有一个辅音字母，先双写该辅音字母，再加“-ed” stop→stopped→stopped 2.不规则变化 常见的不规则动词的过去式、过去分词。 动词原形 过去式 过去分词 do did done eat ate eaten go went gone see saw seen buy bought bought find found found have/has had had make made made let let let put put put bring brought brought ◎课时训练 一、单项填空。 (D) 1.Don't turn off the movie, Peter. I ______ it. A．don't watch B．won't watch C．wasn't watching D．haven't watched (A)2.—How do you like Gone With the Wind? —It's so interesting that I ______ it three times. A．have read B．am reading C．will read D．read (B)3.—Has Lucy ______ travelled by ship? —No，she hasn't. She is afraid of water. A．sometimes B．ever C．often D．still (D)4.—______ you ______ your homework? —No，I haven't. I'll do it right now. A．Did；do B．Are；doing C．Will；do D．Have；done (C)5.—______ you ______ him anywhere before? —Yes, it was last year but I can't remember the right place. A．Will；see B．Do；see C．Have；seen D．Would；see 二、句型转换。 1. Have they found out the accident？(作肯定回答) Yes, they have.　　　　　　　　　　　　　　　　　　　　　 2. He has turned off the computer.(改为否定句) He hasn't turned off the computer.　　　　　　　　　　　 3. I have already found my pen. (改为一般疑问句) Have you found your pen yet？　　　　　　　　　　　　　　 4．I have been in the army for 2 years. (改为否定句)