你们上午几点开始上课?When() your lessons () in the morning?

问题描述:

你们上午几点开始上课?When() your lessons () in the morning?

did started

如果问的是通常情况:do begin
如果问的是过去的时间:did begin

明显是一般现在时:
when do your lessons start in the morning?

When(do) your lessons (begin) in the morning?