what time和when的区别 哪个直接用at 哪个用it's

What time 和 when 区别
都可以对时间提问,但侧重点不同.
1、what time 一般用来询问点钟,或者问某事在某天的哪个具体时刻发生,希望知道的时间更具体,如：
what time does the shop open?　　What time is it?
答：at 8:00.答：it’s 8:00.
2、when可以对点钟、日期、年份、月份等非钟点时间内容进行提问,如：
when are you going to leave shanghai?　When is your birthday?
we are going to leave shanghai next week.My birthday is …
3、询问做某事的时间,两者在问点钟时可以互换,如：
what time do you go to bed?
when do you go to bed?
4、 when 可以作连词,引导状语从句,意为“当---的时候”,而what time 没有这种用法,如：
哪个直接用at 哪个用it's 从区别的第一点的例子可以可知道
如果问某人什么时候做什么事?用 At +时间 来回答.
如果问现在几点了?用It's+时间 回答.

扩展阅读：when与what time用法 ... when is your birthday ... at night和in the evening ... be busy to do还是doing ... when you think of me ... busy后面跟to do还是doing ... have fun ... how的用法 ... what's time ...