一般过去时的讲解研究.ppt

Grammar;知识结构;动词过去式的变化;1. 动词be的变化：;3. 实义动词的变化： 实义动词分规则变化和不规则变化。 规则变化有以下几种： (1) 一般情况下在动词后加-ed。 e.g. play—played visit—visited 　 walk—walked clean—cleaned ;(2) 以不发音的e结尾的词，在词尾 加-d。 e.g. live—lived like—liked 　 dance—danced 　 hope—hoped ;(3) 以一个元音加一个辅音字母结尾的 重读闭音节结尾的单词，要先双写 这个辅音字母，再加-ed。 e.g. stop—stopped 　 drop—dropped 　 plan—planned ;(4) 以辅音字母加y结尾的单词，先改y 为i，再加-ed。 e.g. study—studied 　 carry—carried 不规则变化需要按一定的规律逐个 记忆。;规则动词词-ed的读音清念 /t/ ,元浊/d/ ; /t/ /d/ 之后念/id/;◆不规则变化(需逐个记忆)： do — did come — came go — went sit — sat have — had can — could take — took give — gave put— put get — got 　 swim — swam 　eat — ate tell— told sleep — slept see — saw wear — wore lie — lay drink — drank find — found write — wrote can — could will — would sing — sang read — read;do — did 　　　 go — went 　 read — read　　 see — saw get — got　　　 sit — sat 　　　　 have/has — had 　 am/is — was ;III. 写出下列单词的过去式 talk milk am /is are go ride feed take do see;I ___ 12 years old this year. ;They ____ in China today.;每天，早餐我吃鸡蛋和牛奶。;I get up at 6:30 every morning. I ___ up at 9:00 last Sunday.;They don’t watch TV in the evening. They _________ TV last night.;◆一般现在时:句中be动词用am/is/are, 实义 动词用三单或原形,表示现在的状态或 现在经常反复发生的动作和行为。 ★时标:always usually often sometimes never every day on Sundays ◆现在进行时:句中动词用am/is/are +doing 形式,表示现在正在进行的动作。 ★时标: now at the moment listen look do sth. at+具体时刻 It’s+具体时刻;◆一般过去时:句中be动词用was/were,实义动 词用动词过去