七下9单元2课时.pptVIP

动词原形变动词过去式的规则变化 * Unit 9 How was your weekend? 语法：一般过去时 话题：过去的活动 What did you do last weekend? I played computer games. I did my homework. I went to the library. I cleaned my room. visited my friend went to the mountains went to the beach went shopping What did you do last Saturday? went boating went fishing played tennis stayed at home and watched TV What did you do last Sunday? had a party studied for the math test and practiced English did some readingand read a book about history What did you do yesterday（昨天）? 2 1 一般过去时 1.表示过去发生的动作或存在的状态. 2.通常与过去的时间状语连用:yesterday ,last week (month, year等) 3.句子构成: 系动词be的过去时: am(is) →was are →were 陈述句：He was at home yesterday. 否定句：He wasn’t at home yesterday. 疑问句：Was he at home yesterday? Yes ,he was. / No ,he wasn’t. 实义动词的过去时（以work为例）: 陈述句：I worked yesterday. 否定句：I didn’t work yesterday. 疑问句：Did you work yesterday? Yes , I did. / No , I didn’t. 陈述句：He worked yesterday. 否定句：He didn’t work yesterday. 疑问句：Did he work yesterday? Yes , he did. / No , he didn’t. stopped planned stop plan 以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed carried cried carry cry 以“ 辅音字母+y ”结尾的动词，把y 改为i,再加-ed moved died move die 以字母e 结尾的动词，只加-d wanted answered want answer 一般情况在动词原形后加-ed 过去时 原形 构成方法 清念 /t/ ,元浊/d/ ; /t/ /d/ 之后念/id/ 规则动词词-ed的读音 说明： 1、清念 /t/ ，即 ed 在清辅音后面念 /t/ ,例：finished helped passed cooked 2、元浊 /d/ ,即 ed 在元音，浊辅音后面念 /d/ , 例：borrowed enjoyed called moved 3、/t/ /d/ 之后念 /id/ , 即 ed 在 /t/ /d/ 音后面念 /id/ 例：wanted shouted needed counted *