一、指代不同
1、in the afternoon:在下午。
2、on the afternoon:下午。
二、语法不同
1、in the afternoon:一般说“在下午”用介词in,但当afternoon前有修饰成分如“某日的下午”或“星期×的下午”时用on,但当其前又有时间状语时,on也可换为in。
2、on the afternoon:afternoon与this,that,yesterday,tomorrow,every,all等限定词连用时相当于副词短语,其前不使用介词。afternoon用作状语时,其前也不使用介词。
1、Somewhat after onein the afternoon, Tom resignedly underwent the ordeal of being dressed for dinner.
过了下午一点钟,汤姆无奈地接受了换装赴宴的折磨。
2、There is only sunshinein the afternoon.
只有下午才有阳光。
3、Next day, Heidi came to Clarain the afternoon and said, "Can I always, always read to you now, Clara?"
第二天下午,海蒂来找克拉拉,对她说:“克拉拉,我现在可以一直,一直读给你听吗?”
4、At about one o'clockin the afternoon, he lost his way and couldn't find any other people.
大约在下午一点的时候,他迷路了,也找不到其他人。
5、I have my lunch at the school cafeteria and I usually leave around 3:30in the afternoon.
我在学校的自助餐厅吃午饭,通常下午三点半左右离开。