bedoing…when 句型详解
掌握英语中“正在做某事时,突然……”的经典表达
什么是 bedoing…when 句型?
“bedoing…when” 是英语中一种常见的句型结构,用于描述“某人正在做某事时,突然发生了另一件事”。
其中,“bedoing” 表示过去进行时(was/were + doing),“when” 引导一个一般过去时的从句。
I was watching TV when the phone rang.
(我正在看电视,这时电话响了。)
基本结构
主句(过去进行时) + when + 从句(一般过去时)
- 主语 + was/were + 动词-ing:表示正在进行的动作
- when + 主语 + 动词过去式:表示突然发生的打断事件
使用要点
- 主句动作是“背景”或“持续状态”,通常较长;
- when 从句动作是“瞬间事件”,打断主句动作;
- when 不能替换为 while(while 强调两个同时进行的动作);
- 主句和从句的主语可以不同。
经典例句
She was cooking dinner when the lights went out.
They were playing basketball when it started to rain.
He was walking home when he saw an accident.
We were having a meeting when the fire alarm rang.
常见错误提醒
❌ 错误:I was watch TV when he came in.
✅ 正确:I was watching TV when he came in.
❌ 错误:When I was eating, the doorbell rings.
✅ 正确:When I was eating, the doorbell rang.