内容正文:
Unit 12
Life is full of the unexpected.
Section A Grammar Focus ~ 4c
九年级全一册
人教版
Learning Goals
Warming Up
Grammar
Summary
Exercises
1
1
2
3
4
5
通过本课的学习,学生能够:
①了解过去完成时态(初中课标未作要求),复习一般过去时态。
②运用各时态描述自己生活中发生的事情。
Learning Goals
Warming Up
Let’s first enjoy a video.
What is the song about?
What tense will we use when telling a story happened long ago?
It tells a story about a princess asleep.
Past 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.
默读 “语法聚焦” 表格中的例句,找出例句中运用的不同时态。
Presentation
一般过去时
过去完成时
过去将来时
过去进行时
Discussion
这些句子,为什么分别使用一般过去时和过去完成时?
在使用不同时态时,这些句子的动作有什么先后顺序?
宾语从句,主句一般过去时,从句动作发生在主句之前,用过去完成时。
When I got to school, I realized that I had left my backpack at home.
by the time/ before + 一般过去时的时间状语从句,主句动作发生在从句之前,主句用过去完成时
By the time I got back to school, the bell had rung.
Before I got to the bus stop, the bus had already left.
when引导的时间状语从句用一般过去时,主句表示decided的时候马上要做的事情,发生在decided这个动作之后,用过去将来时。
I was about to go up to my office when I decided to get a coffee first.
As 引导的时间状语从句用过去进行时,主句表示was waiting那个时间发生的动作,表示过去某个时间发生的动作,主句用一般过去时
As I was waiting in line with the other office workers, I heard a loud sound.
过去完成时由“助动词had (用于各种人称和数) + 过去分词”构成,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”。
过去完成时
过去的过去
过去某时
现在
将来
(先发生)
(后发生)
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
1. 过去完成时的句式结构
(1) 肯定句:
(2) 否定句:
(3) 一般疑问句:
肯定回答:
否定回答:
过去完成时
主语 + had + 过去分词 + 其他.
主语 + hadn’t + 过去分词 + 其他.
Had+ 主语 + 过去分词 + 其他?
Yes, 主语 + had.
No, 主语 + hadn’t.
表示一个动作或状态在过去某一时间动作之前已经发生或完成,常与by、 before等构成的时间短语连用。
2. 过去完成时的用法
He told me that he had met her the night before.
Before I arrived at the airport, the plane had already taken off.
(2)常用在said、told、knew、heard、realized等后面的宾语从句中。
在我到达机场前,飞机已经起飞了。
他告诉我他在前一天晚上已