3. 你知道when和while的区别和用法吗？
When I opened the door, the cat ran out.
我打开门时，猫跑了出去。(opened是瞬间动作，先开门，后跑，动作有先后顺序。)
She fell asleep when she was listening to music.
她听音乐时睡着了。(listening是持续动作，睡着发生在听音乐这个动作时段之内。)
When he gets up every morning, he drinks a cup of coffee.
他每天早上起床时，都会喝一杯咖啡。(描述习惯性动作，主从句均用一般现在时。)
While they were playing football, it started to rain.
他们踢足球时，开始下雨了。(playing是持续动作，踢足球与下雨同时发生。)
My friend called me while I was cooking dinner.
我做晚饭时，朋友打电话给我。(cooking是持续动作，做饭期间电话响起，动作同时进行。)
总结: when与while的核心区别

【即学即练】阅读下面短文，用when或while填空，使语篇逻辑通顺。
Last Saturday, I had a relaxing day. (1) I woke up at 8: 00, my mom had already prepared breakfast. I ate pancakes (2) she was making coffee. (3) I finished eating, I decided to go for a walk in the park. (4) I was walking along the path, I met my classmate, Lily. We talked about our school life (5) we were sitting on a bench. (6) it was getting late, we said goodbye to each other. (7) I got home, I took a nap. In the afternoon, (8) I was reading a book, my dad brought me a new puzzle. I spent two hours solving it!

表格部分：
①延续性动词
②过去进行时
即学即练部分：
(1) When
(2) while
(3) When
(4) While
(5) while
(6) When
(7) When
(8) While

表格填空解析
①while强调动作的持续性，因此仅能接延续性动词；
②when引导的从句，除了一般过去时，还可使用过去进行时，此时主从句动作可同时发生。
即学即练填空解析
结合when和while的核心区别：when可接延续性/非延续性动词，主从句动作可同时或先后发生，侧重“某一时刻”的触发；while仅接延续性动词，主从句动作同时发生，侧重“某一持续过程”的伴随。
(1) "woke up"是非延续性动作，侧重“醒来”的时刻，用When；
(2) "she was making coffee"是延续性动作，“吃煎饼”和“做咖啡”同时进行，用while；
(3) "finished eating"是非延续性动作，侧重“吃完”的时刻，用When；
(4) "I was walking"是延续性动作，强调走路过程中遇到同学，用While；
(5) "we were sitting"是延续性动作，“交谈”和“坐着”同时发生，用while；
(6) "it was getting late"侧重天色变晚的时间点，用When；
(7) "got home"是非延续性动作，侧重“到家”的时刻，用When；
(8) "I was reading"是延续性动作，强调看书过程中爸爸送拼图，用While。