过去完成时PPT课件.ppt
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1、过去完成时,Grammar Focus,2. 表示过去某一时刻 或动作之前 已发生或完成的动作或呈现的状态。也就是说发生在“过去的过去”。,1. Past perfect Tense 过去完成时 构成:had过去分词,过去完成时态的用法:,1. 常由by或before, when引导的短语或从句做时间状语或时间状语从句 by 到时候为止 by the end of last week 到上周末为止 by that time 到那时为止 before that year 那年之前 before I arrived 在我到达之前By the end of last year, I had lear
2、ned about one thousand English words.When I got there, they had already left.,2、常用在宾语从句中 He told me he had already finished his homework. I realized he had fooled me again3、体现在上下文中I didnt go to the movies yesterday because I had seen it twice.,6:00 7:00 现在,By the time I got up, my sister had already
3、 washed all the clothes.,By the time my mom came back home, I had cleaned up the yard.,I got home,My little brother went to bed,By the time I got home, my little brother had gone to bed.,I got to school,The teacher came into the classroom,By the time I got to school, the teacher had come into the cl
4、assroom,By the time she got outside, the bus had already left.,By the time she got outside, the bus had already left.,她出去的时候,公共汽车已经开走了。,By the time 到的时候为止后接过去时的句子时, 主语的谓语动词用过去完成时态。,现在完成时: 主语 + have / has done过去完成时: 主语 + had done,1. She had written a number of books _ the end of last year. A. for B.
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