一、学习目标
- 掌握 was/were + doing 的结构。
- 理解过去某一时刻正在发生的动作。
- 能和一般过去时配合表达背景与插入事件。
二、核心概念
| 概念 | 学习时要抓住的意思 |
|---|---|
| 过去进行时 | 过去某时正在进行的动作。 |
| 背景动作 | 持续中的动作,为另一个动作提供背景。 |
| 时间点 | at that time、at 8 yesterday 等提示过去进行。 |
三、重点知识
| 重点 | 判断方法 | 例句 |
|---|---|---|
| 肯定句 | was/were + doing | I was reading at eight. |
| when | 短动作插入 | I was sleeping when he called. |
| while | 两个动作同时进行 | While I was reading, she was writing. |
四、知识点讲解
过去进行时的重点是把过去时间线上的“正在进行”画出来。
1. 学习步骤
- 找过去时间点或上下文。
- 判断动作当时是否正在进行。
- 遇到 when/while 时区分长动作和短动作。
2. 记忆提示
was用于 I/he/she/it 和单数主语。were用于 you/we/they 和复数主语。
五、易错点
| 易错点 | 常见错误 | 正确做法 |
|---|---|---|
| be 动词形式错 | They was playing. | They were playing. |
| doing 漏掉 | I was read. | I was reading. |
| when 后都用进行时 | When he was coming, I slept. | He came when I was sleeping. |
六、例题
1. 填空
They ___ (play) soccer at 5 yesterday afternoon.
答案: were playing。
2. 合并句子
I was doing homework. My father came back. 用 when 合并。
答案: I was doing homework when my father came back.
七、练习题和答案
1. 练习题
- She ___ (watch) TV at nine last night.
- We ___ (not sleep) then.
- ___ you ___ (read) when I called?
- 翻译:当老师进来时,我们正在讨论问题。
- 用 while 写一个两个动作同时进行的句子。
2. 答案
- was watching
- weren’t sleeping
- Were; reading
- We were discussing the problem when the teacher came in.
- 示例:While I was reading, my brother was drawing.