(1) in和after均可接表时间段的名词,表示“在„„时间之后”。
但in + 一段时间(用一般将来时),after + 一段时间(用一般过去时)。 Eg: He will come back in a few days. 他过几天就回来。 He died after a few days. 几天后他死了。
(2) after还可接表具体时间的名词,而in一般不可以。
Eg: He will come here after three o’clock this afternoon. 他今天下午3点钟以后来这儿。
(3) after还可表次序,含有“连接”的意思。
Eg: After you! 你先请。
Day after day/year after year 日复一日/年复一年 B comes after A; C comes after B. 字母B在A之后,C在B之后。
(4) behind往往表示位置或方向的前后,不表示时间。
Eg: There is a garden behind the house. 房子后面有一个花园。 He sits behind me. 他坐在我后面。
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