when引导的时间状语从句的省略句的用法(越详细越好)
问题描述：
when引导的时间状语从句的省略句的用法(越详细越好)
答
1) I wear worn-clothes when staying at home. (doing)2) I give good advice when asked. （done）3) She always felt depressed when alone. (adj.)4) I have always thought about you when in trouble.