在英语学习中，使用while过去进行时可以描述连续的动作或场景。例如："我昨天晚上在看电视，当我妈妈进来的时候，我正在看电影"，"当我们在公园散步的时候，天气突然变得非常阴暗"，"昨天下午，我正在做作业，突然想起要去参加朋友的生日聚会"。
- 我昨天晚上在看电视，当我妈妈进来的时候，我正在看电影。
While I was watching TV last night, I was watching a movie when my mom came in.
- 当我们在公园散步的时候，天气突然变得非常阴暗。
While we were walking in the park, the weather suddenly became very dark.
- 昨天下午，我正在做作业，突然想起要去参加朋友的生日聚会。
Yesterday afternoon, while I was doing my homework, I suddenly remembered that I had to go to my friend's birthday party.
