第1个回答 2020-06-30
凡是精确到日的都用on,像年月日、月日、星期几;其他你所列出来的都用in。
下面是从其他地方找到的资料,供参考:
1、年月日--月日年
2003年2月1日
February
1st
2003.
2、日期中有几号的,前面用介词“on”,其余用“in”
in
the
spring
of
1987
in
1999
in
May
on
May
5th
3、在具体某一天用介词on
on
用于日、周日或某日中的一段时间:
on
July
2
7月2日
on
Sunday
在星期天
on
the
morning
of
last
Sunday
上星期天早晨
in
一日中的早、下午、晚,周、季、年、世纪例如:
in
the
afternoon
在下午
in
a
week
一周
in
summer
在夏天
at
点钟;一日中的黎明、中午、黄昏、半夜;
at
six(dawn)6点钟(在黎明)如果时间词前面有next,this,last
every等修饰语时,常不用介词。
第2个回答 2010-04-16
1. at , at six o'clock of 10th.
2. in, in the morning/ afternoon/ evening
3. on, on June 1st
4. at, at six of June 1st
5. on, on the morning/ afternoon/evening of June 1sr
6. in in 1990, in January, in January,1990
7, on on June 1st, 1990
8. at at six of June 1st, 1990
9. on on the morning/afternoon/ evening of June 1st, 1990