介词 IN ON AT 在月份,星期几,白天,夜晚 那些怎么用,怎么放

in the morning/afternoon/evening在早晨/中午/傍晚
in+月份
at noon/night在中午/夜晚
on +星期
on+具体日期(on October 2nd)
如果介词后面有形容词..一般用on.如on a cold night