初中 英语一般过去式讲解.ppt

一般过去式讲解 引例： (a-1)?I am in class today. (a-2)?I was in class yesterday. (b-1)?He lives here now. (b-2) He lived here ten years ago. (c-1) My friends are at home today. (c-2) My friends were at home last night. 一般过去式的概念： 一般过去时表示过去某个时间里发生的动作或状态； 过去习惯性、经常性的动作、行为； 过去主语所具备的能力和性格。 一般过去式的用法： 一般过去时常与表示过去的时间状语或从句连用 a）时间状语 Ago（two hours ago（一段时间+ago），yesterday（句子开头或结尾），the day before yesterday,lastweek,last(year,night,month…)，具体时间（如Jan.fourth),just now,at the age of,one day,long ago,once upon a time（很久以前），and so on,this morning.long long ago. b）动词变化规则 规则变化 1．直接加ed：work—— worked look——looked play——played, 　　 2．以e结尾的单词，直接加d：live ——lived hope——hoped use——used, 　　 3 以辅音字母+y结尾的，变y为i加ed：study—— studied carry——carried worry——worried, 4 以元音字母+y结尾的，直接加ed：enjoy ——enjoyed play——played 　　 5 以重读闭音节结尾的，双写最后的辅音字母+ed：stop—— stopped plan——planned 　 不规则变化： make-made-made may-might mean-meant-meant meet-met-met must-must pay-paid-paid put-put-put write-wrote-written win-won-won BE动词的过去式 单数： I was you were (一個人) she was he was it was 复数： we were you were (不只一人) they were 一般过去式的构成形式 practise-1 一、用动词的适当形式填空 1. He ________ (live) in America two years ago. 2. The boy ________ (listen) to the teacher carefully last week. 3. We _______ (watch) a Japanese cartoon last Friday. 4. Nancy ________ (pick) up oranges on the farm last week. 5. I ________ (pull) up carrot with Mike yesterday. 6. They ________ (play) chess in the classroom last PE lesson. 7. My mother _______ (cook) a nice food last Spring Festival. 8. The girls _______ (dance) at the party last Wednesday . 9.The students ________ (study) very hard last month. 10. My parents _____ (plan ) to have a good weekend last Thursday. practise-2 二、句型转换: 1. They played football in the playground yesterday. 否定句：________________________________________________ 一般疑问句：_____________________________肯、否定回答：________ 划线部分提问：________________________________________________ 2. Liu Tao skated with with his cousin last Winter Holiday. 否定句：_