第1个回答 2022-06-09
可以对时间at half past nine (在9:30)进行提问,疑问词用when,时态为一般过去时,助动词用did,主语I变you,went变go,答案如下:
When did you go to bed?本回答被网友采纳
第2个回答 2022-06-09
可以变为:When did you go to bed?
第3个回答 2022-06-09
I went to bed at half past nine变成特殊疑问句
When did you go to bed?