介词at on in 表时间不同的用法

介词at on in 表时间不同的用法

at 表示具体的时间点。如：at 8:30.
on表示具体的、特定的某一天。如：on a cold day; on Sep.10.
in表示某个时间段。如：in the morning, in the evening.

例句辨析：
at
1、At one o'clock the rain had ceased.
一点时，雨已停了。
2、I went to sleep, and at two o'clock in the morning I woke up.

我睡着了，凌晨两点的时候醒了过来。
3、Let's make it definite--we'll meet at 6 o'clock.

咱们说死了，6点钟见面。

on
1、I thought we might go for a drive on Sunday.
我想星期天我们可以开车去兜兜风。
2、I'm busy on weekdays. May I see you on Sunday?

我平时很忙，我可以在周日与你见面吗？
3、On Sunday morning Bill was woken by the telephone.

星期天早晨，比尔被电话铃声吵醒了。

in
1、I had a chat with Lars in the morning and spoke Swedish.
上午，我用瑞典话和拉尔斯聊了一会。
2、I went to sleep, and at two o'clock in the morning I woke up.

我睡着了，凌晨两点的时候醒了过来。
3、They have to get up early in the morning.

他们大清早就得起床。

at+钟点 at7:00 on+某一天 on July 1st/ on Sunday /on the night of last Sunday in+年/月/季节 in 2016/ in October/ in spring 固定用法除外

一般时间多用三个介词，分别是：at, on, in。而这三个介词大概的顺序也是从小到达的排列。
比如：at: （小）多用于具体的时间 at 6' clock， at night
 on: (中) 多用于星期， on monday 
 具体到几月几号 on may 1st
 in: (大) 多用于世纪 in the 21th c
 年 in 2009
 季节 in winter, in summer
 月 in january, in may
 早、中、晚 in the morning, in the afternonn
我给孩子上课大致是这么分的，不知道对你有没有帮助。

"在下个星期3的下午"：in the next wendesday afternoon.
在2009年1月1日的下午1点:at 1 pm,in 2009 jan.1st