2020年春人教版九年级下册（安徽）英语作业课件：Unit 12 单元语法专题(共12张PPT)

单元语法专题& Section a( Grammar Focus~4c) 语法知识专讲 过去完成时8 过去完成时的概念 过去完成时表示过去某一时间或某一动作以前 已经完成了的动作。它表示动作发生的时间是“过去 的过去”。过去完成时的构成 肯定句:主语十had+动词的过去分词+其他 否定句:主语十had+not十动词的过去分词十其他 般疑问句:Had+主语十动词的过去分词 其他 二、过去完成时的基本用法 1.表示过去某一时间或某一动作之前已经完成的 动作。 e.g.: Tom had learned some English words before he went to america.汤姆在去美国之前就已经学 了一些英语单词 By the end of last month, they had finished the work.在上个月末,他们已经完成了工作 2.表示从过去某一时间开始,一直延续到过去另一时 间的动作。 e.g.: I had been at the bus stop for 15 minutes when a bus finally came.当终于来了一辆公共汽车 的时候,我已经在公共汽车站等了15分钟了 6. The little girl (lie) in bed for almost a month since she (fall) sick 7. He told his mother that he (run) out of money to buy new be OoKs When i got back to the shop, my bag (take) away by someone else 、单项填空。 y parents to work by the time I up. egan; get B have begun; had got C. had begun; got D began; have got (2.You didnt watch the movie? Yes, but by the time I to the cinema, the movie for several minutes A. goes; has begun B got; had been on C. got; had begun D go