Unit 12 Section A Grammar Focus -4c 课件2023-2024学年人教版九年级英语全册

Unit 12 Life is full of the unexpected Grammar focus -4c louisa louisa By the time she ran outside, the bus had already left. When she ran outside,the bus had already left. 过去的过去 过去 she ran outside the bus left louisa 2 the policeman got to the shop Tom ran away By the time the policeman got to the shop, Tom had run away. When the policeman got to the shop, Tom had run away. 过去的过去 过去 louisa 3 Jenny woke up the concert was over By the time Jenny woke up, the concert had been over. When Jenny woke up, the concert had been over. 过去的过去 过去 louisa 4 Grammar Focus When I got to school, I realized that I had left my backpack at home. By the time I got to school, the bell had rung. Before I got to the bus stop, the bus had already left. I was about to go up to my office when I decided to get a coffee first. As I was waiting in line with the other office workers, I heard a loud sound. louisa 一、概念 过去完成时表示一个动作或状态在过去某一 时间或动作之前已经完成或结束，也可能是 早已完成或结束，即“过去的过去”；也可以 指过去的动作延续到过去的某个时刻。 二、结构 “had +动词的过去分词” 过去完成时 louisa 三、用法 表示过去某一时间或动作之前已经发生或完 成的动作或存在的状态。句中常用by, before, when, until等词引导时间状语。 它是以过去某一时间为起点，所以过去完成 时是一个相对的时态，表示的是“过去的过 去”。只有和过去某时间或某动作相比较时 才能用到它。 例: Most of the guests had left when he arrived at the party. 当他到达晚会时，他发现大多数客人已经 离开了。 louisa 2. 过去完成时还可表示过去某一时刻之前发生 的动作或状态持续到过去某个时间或持续下去， 常与for, since等词连用。 例： When Jack arrived, Mary had been away for almost an hour. 当杰克到时，玛丽已经离开快一个小时。 My grandmother had been dead since November last year. louisa 总 结 1. 过去完成时的构成：_____+___________ 2. 过去完成时表示： __________________________________ __________________________________ 3. 过去完成时常与___________________________ 等引导的时间状语连用。 had 过去分词 when, before, by the time 过去某一时刻或动作之前已经发生或完成的动作。过去的过去 louisa 过去完成时的时间状语 when by the time before as soon as until once after When I got up,my brother had gotten into the shower. By the time I reached school,the teacher had began teaching.