Question

when引导的时间状语从句 从句可以用进行时吗

Answer 1

when 既可以和延续性动词连用,也可和非延续性动词连用.

When / while / As I was walking in the street ,it began to rain .

I was coking when someone knocked on the door .

While I was doing my homework ,my mother was watching TV .

We sang as we walked along .