after表示以过去的某一时间为起点,意为“过……之后”,其后既可接时间点,又可接时间段。但是,如果after用于一般将来时,那么其后应接时间点。如:
1). He left there after two o'clock that afternoon.那天下午两点以后,他离开了那儿。
2). They started to go again after two days.两天以后,他们又走了。
3). I think he'll come here after three o'clock.我想他三点钟后将来这儿。
later指“以后”、“后来”,可以指过去,也可指将来,是副词,常常放在时间段的名词之后。如:
Three days later he got to Beijing.
=After three days he got to Beijing.
他三天以后到达了北京。