Unit 12 Section A Grammar Focus课件-2024-2025学年人教版英语九年级全册

Section A Grammar Focus Unit 12 Life is full of the unexpected. Revision By the time I got outside, the bus had already left. had left got outside now 过去 过去的过去 现在 Grammmar 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 other office workers, I heard a loud sound. Past Perfect Tense 过去完成时 构成 定义 时间点 had +动词过去分词 表示在过去某一时间或动作之前已经发生或完成了的动作。它表示动作发生的时间是“过去的过去”。 经常与by, before, when,by the time 等引导时间状语连用 过去完成时一般与before, after, when，by the time, till/ until 等引导的时间从句连用，从句用 1 eg. When I got to school, the bell had rung. 当我到学校时，铃已经响了。 2 在由told. heard, realize, thought 等词引导的宾语从句中，一般用过去完成时。 eg. He said he had seen me before. 他说他之前见过我。 4a Make sentences using by the time or before. 1. Tim went into the bathroom. Mary got up. 2. The coffee became cold. I put cream in the coffee. 3. The teacher collected the math homework. I got to school. By the time Mary got up, Tim had already gone into the bathroom. By the time I got to school, the teacher had collected the math homework. Before I put cream in the coffee, the coffee had become cold. 4. I completed the work for my boss. The workday ended. 5. The movie started. I arrive at the cinema. 6. My mother finished making the apple pie. I got home from my language course. I had completed the work for my boss before the workday ended. The movie had started, before I arrived at the cinema. By the time I got home from my language course, my mother had finished making the apple pie. 4b Fill in the blanks with the correct forms of the words in the box. 过去完成时VS 现在完成时，一般过去时 现在完成时表示的动作发生在过去, 但侧重对现在产生的结果或造成的影响,与现在有关. 其结构为”助动词have/has+过去分词”; 过去完成时则是一个相对的时态, 它所表示的动作不仅发生在过去,更强调“过去的过去”。 时间状语不同。过去完成时在时间上强调“过去的过去”，而一般过去时只强调过去某一特定的过去时间。 铅笔一支 笔记本一个 单词一遍 唱一首歌 模仿对话 棒棒糖一支 拆 红 包 Summary Homework 1.练习过去完成时句子。 2.区别现在完成时，过去完成时，一般过去时。 Thank you 夜的钢琴曲十五 石进 夜的钢琴曲 Demo集 122727.43 XXX - 酷我音乐 $$