Unit 12 Section A Grammar Focus-4c 语法课件2023-2024学年人教版英语九年级全册

Unit 12 Life is full of the unexpected. Section A GF-4C New words n.街区 n.工作者；工人 v.盯着看；凝视 n.不信；怀疑 prep.在……上面 adv.在上面 v.着火；燃烧 (burnt, burnt; burned, burned) block worker stare disbelief above burn n.奶油；乳脂 n.工作日 n.果馅饼；果馅派 n.豆；豆荚 n.市场；集市 pie bean market cream workday Grammar Focus Read aloud and find out the Past perfect tense. When I got to school, I realized that I had left my backpack at home. By the time I got back 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. 过去完成时 一般过去时 过去完成时是英语中的一种时态，用来表示在过去某个时间点或动作发生之前已经发生或完成的动作或状态。它通常与另一个过去的动作或时间点相呼应，用来强调先后顺序。是“过去的过去”。 过去完成时 1. By nine o’clock last night, we had got 200 pictures from the spaceship. 2.I had been at the bus stop for 20 minutes when a bus finally came. 3.He said he had worked in that factory since 1949. 4.The train had left before Tina reached the station. Grammar Focus When I got to school, I realized that I had left my backpack at home. By the time I got back 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. Past Perfect Tense (过去完成时态） 1. 方框里是什么语法？ 2. 其基本结构是： had+过去分词 When I got to school, I realized that I had left my backpack at home. By the time I got back to school, the bell had rung. Before I got to the bus stop, the bus had already left. Grammar Focus 主句为过去完成时，从句是一般过去时，主句动作发生在从句之前。 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. 两个动作同时进行，主从句都是一般过去时或过去进行时。 7 Grammar Focus 过去完成时 过去的过去 过去某时 现在 将来 过去完成时 从过去之前的某个时间点到过去的某个时间点为止 （先发生） （后发生） (1)概念 表示某动作或状态在过去某一时间或动作之前 已经发生或完成， 它表示动作发生的时间是“过去的过去”。 (2)构成