时间状语从句How did the author feel when waiting tables （做服务生）at t

when 在从句中做时间状语 how did the writer feel at the beginning of the how did lisa feel when she saw the how did you feel when some one out the tret? (How/What) did you feel at the beginning? when 引导时间状语从句 How long have you been waiting?how long 这里是做 时间状语,还是宾语 at the time能不能引导时间状语从句 What was Linda doing?The telephone rang.(用when连成时间状语从句） 怎么区别when是在作名词性（定语）从句还是在做时间状语从句? 宾语从句用when做连词时从句中不能有时间状语? by the time引导的时间状语从句和when引导的时间状语从句有区别吗