以when合while引导的从句的时态

when 后面一般接一般现在时态或一般过去时态. 如：
When I was young, I often listened to the radio.
Please tell him about it when you meet him.

While 后面接进行时态 如：
Jim is listening to music while his parents are watching TV.
He felt over while he was riding a bike.

祝学习愉快!