过去进行时
Past Continuous
过去进行时描述过去某一特定时刻正在进行的动作。由 was/were + 动词-ing 构成，常与过去一般时连用，以表示持续的动作被较短的事件打断。
何时使用
用于过去某一时刻正在进行的动作、过去同时进行的两个动作，或较长的过去动作被较短的动作打断时（常与 "when" 或 "while" 搭配）。
结构
S + was/were + V-ingThey were playing football all afternoon.
他们整个下午**都在踢**足球。
S + wasn't/weren't + V-ingShe wasn't sleeping when I called.
我打电话时她**不在睡觉**。
Was/Were + S + V-ing?Were you studying at 8 o'clock last night?
你昨晚8点在**学习**吗？
信号词
- while
- when
- at that moment
- at 8 o'clock yesterday
- all morning
- all day
例句
I was reading when she called.
她打电话时我**正在读书**。
They were playing football all afternoon.
他们整个下午**都在踢**足球。
What were you doing at 8 o'clock last night?
昨晚8点你**在做什么**？
She was cooking while he was watching TV.
她**在做饭**的时候他**在看**电视。
It was raining when we left the house.
我们离开家的时候**正在下雨**。
拼写规则（第三人称单数）
| 大多数动词 | 加 -ing | play → playing, read → reading |
|---|---|---|
| 以不发音的 -e 结尾 | 去 -e 加 -ing | make → making, drive → driving |
| 以辅音-元音-辅音结尾的短动词 | 末尾辅音双写 + -ing | run → running, sit → sitting |
常见错误
I was read when she called.
I was reading when she called.
过去进行时需要 was/were + V-ing，不能只用动词原形
While I was studying, she arrived.
While I was studying, she arrived. ✓ (this is correct!)
这其实是正确的！"while" + past continuous 被 past simple 打断
提示
记住经典模式："I WAS doing X when something happened." 过去进行（was doing）= 长时间的背景动作。过去一般（happened）= 打断它的短动作。