什么时候用at+时间,什么时候用in+时间,什么时候用on+时间啊
1个回答

at表示“在……时刻”,与具体的钟点搭配使用,如:

We open at seven and close at ten.

We start work at 8 o’clock

on表示“在……时候”,与日期、星期搭配使用.如:

I leave on Monday 25th November.

He plays football on Friday.

*in表示“在……期间”,与具体的年代、月份、季节或一天中的某个时段搭配使用.如:

The postman comes in the morning(s) and in the afternoon(s).邮递员每天上午和下午来送信.

注意:on Monday与on Mondays意义不完全相同.on Monday有两个意思,第一表示特指的某个星期一,第二表示每逢星期一;而on Mondays只表示每逢星期一.

注意:具体某天的上午、下午或晚上要用介词on,如:

They will have dinner together on Sunday evening.

*注意:以下名词与介词的固定搭配:

My children play in the street in the daytime. (在白天)

I can hear the cars at night. (在晚上)

I go to my mother’s house at the weekend. (在周末)

I go to my mother’s house on the weekend.(美式英语)

I play tennis at weekends. (每逢周末)