方为介词in at on的用法!咧:in school 还是at school 还是on school?为什么?

问题描述:

方为介词in at on的用法!
咧:in school 还是at school 还是on school?为什么?

介词的时间用法:时间点用 at - at 5 o'clock,at noon 时间段用 in - in 1997,in the afternoon,in the weekend 但若是星期几之前用 on - on Monday,on Friday,on Saturday evening 介词的空间用法:准确的地点用 at...