过去进行时：背景时态
was/were + -ing 描绘过去的背景场景：当某事发生时正在发生什么。镜头滚动，然后电话响起。
过去进行时
故事背后的场景
过去进行时就像一部电影摄影机：它记录过去某个时刻正在进行的动作。与此同时，一般过去时作为打断者介入——即发生的那件事。
背景
正在进行的动作I was cooking when the phone rang
打断者
一般过去时介入The phone rang while I was cooking
同时两件事
并行动作While she was cooking, he was cleaning
确切时刻
过去的固定时间At 8 p.m., we were watching TV
⚠️ was/were + 动词-ing。I/he/she/it 用 was；you/we/they 用 were。
公式
was/were + 动词-ing
该公式是带有时间机器的现在进行时：was 或 were 加上 -ing 动词。否定句加 not，疑问句交换语序。
Iwas sleepingat midnight
Theywere playingfootball
Shewasn't listening
Were youwatchingTV at 9?
常见错误
四种摄影失误
当 -ing 缺失、was 和 were 位置互换，或习惯试图将动作拍摄为场景时，摄影机就会出错。
I was went to the shop.
I was going to the shop.
💡 过去进行时 = was/were + -ing，而非 not + 一般过去时。
She were cooking dinner.
She was cooking dinner.
💡 was 与 she 搭配；were 与 you/we/they 搭配。
I was work when she called.
I was working when she called.
💡 -ing 不可协商。
I was working every day last year.
I worked every day last year.
💡 常规动作使用一般过去时——进行时用于正在进行的时刻。
快速测验
测试你刚才学到的内容
三分钟，五道题——检查记住了什么。我们保证没有作文题。
She ___ a book when I arrived.
💡 附加信息2 个部分
场景与中断点
时间段与时间点
在时间轴上，背景是一个长时段，中断点是一个单点。这就是这个时态的完整故事。
I was cooking dinner when…
…the phone rang
⚠️ 范围=场景。点=中断点。
简单时态还是进行时？
一个问题决定时态
过去事件有两种形式：已完成事件和进行中的场景。问清楚你指的是哪一种。