1.I was listening to the radio when the telephone rang.（一般过去时,推荐）
I am listening to the radio when the telephone rings.（一般现在时）
2.He watched TV after finishing his homework.
3.I have had my breakfast（或lunch,dinner）
4.This story sounds interesting. 1.I was listening to the radio when the telephone rang.（一般过去时,推荐）
I am listening to the radio when the telephone rings.（一般现在时）
2.He watched TV after finishing his homework.
3.I have had my breakfast（或lunch,dinner）
4.This story sounds interesting.