初中英语一般过去式讲解ppt.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 looklooked playplayed, 2以e结尾的单词，直接加d：live lived hopehoped useused, 3 以辅音字母+y结尾的，变y为i加ed：study studied carrycarried worryworried, 4 以元音字母+y结尾的，直接加ed：enjoy enjoyed playplayed 5 以重读闭音节结尾的，双写最后的辅音字母+ed：stop stopped planplanned,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：_ 一般疑问句：_肯、否定回答：_ 划线部分提问：_ 3. My brother showed h