关于英语中的when和while?

题目

关于英语中的when和while?
这里有8句话,哪些是对的?
1、When I was playing,he was doing his homework.
2、While I was playing,he was doing his homework.
3、When I played,he was doing his homework.
4、While I played,he was doing his homework.
5、When I was playing,he did his homework.
6、While I was playing,he did his homework.
7、When I played,he did his homework.
8、While I played,he did his homework.
帮我判断,

答案

2,3,5对的,其余都是错的.
其实告诉你一个简单的方法,前后两小句各是两个长动作（就是doing）的时候,就用while,前后两句是一个长动作,一个短动作的时候,就用when.很easy吧.