in,at,on加上时间on july 1st,2008.还是in july 1st,2008?in,on,at加上时间有什么区别?
问题描述：
in,at,on加上时间
on july 1st,2008.还是in july 1st,2008?in,on,at加上时间有什么区别?
答
在某一天用on，某一年用in，具体时间用at。
答
on july 1st,2008
具体哪一天用on,某一年用in,具体时间点用at.