Unit 12 Section A Grammar Focus-4c & Self Check 课件 2023-2024学年人教版九年级英语上册

Unit 12 Section A (Grammar Focus-4c& Self Check) Life is full of the unexpected. Tang原创课件 小红书Tang 1 When I got to school, I realized that I________my backpack at home? (落下了) By the time I _______school, the bell had rung.(到达) Before I ____to the bus stop,(到达) the bus_________.(离开) I _____________ go up to my office when I decided to get a coffee first.(打算) As I was_________________the other office workers,I heard a loud sound.(排队等) Grammar Focus had left got to was about to got waiting in line with had left P92 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。 3 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. 【图解】 1.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”。 过去完成时用法 ① 表示过去某一时间可用by, before 等构成的短语表示。 ② 也可以用when, before 等引导的时间状语从句表示。 ③ 还可以通过状语从句或通过上下文暗示。 例如：By the time he got here, the bus had left. 在他到达那里之前，汽车已经离开了。 过去的过去 过去 现在 将来 过去完成时 2.表示某一动作或状态在过去某时之前已经开始，一直延续到这一过去的时间。常用表延续的时间状语如： by the end of+ 过去的时间点，by the time+从句等。 过去完成时用法 例如: By the end of last year, she had worked in the factory for twenty years. 到去年年底，她已经在这家工厂工作20年了。 【图解】 过去完成时 过去的过去 过去 现在 将来 过去完成时的结构 【肯定句】：助动词had(用于各种人称和数) + done 【否定句】：had not/hadn’t + done my mom came back now 17:15 17:00am I cleaned up the yard By the time ... By