on in 日期on May 12th 还是 in May 12th有百分之百把握再回答!算具体么 没说哪年呀
问题描述：
on in 日期
on May 12th 还是 in May 12th
有百分之百把握再回答!
算具体么 没说哪年呀
答
要用on
在具体某一天前面用介词ON
答
in May 12th
答
具体日期前用on,所以是on May 12th
月份,年份前用in,比如in May ;in 2009