摘要:(一)表示时间段的介词 (1)in , after in +时间段.表示从现在起往后推算一段时间 after +时间段.表示过去某时间往后推算一段时间.如: He’ll come back in two days. 但点钟用after( after three o’clock) He left on July 2 and returned after three days. (2)in , during 表示在一段特指的时间内.可用in 或during The work was done in / during the holidays. 表示年份.月份.季节用in , 如:in 1999 ,in June , in winter (3)in last, for the past + 时间段, during 表示在最近一段时间内.句中谓语动词常用现在完成时 I have been in Shanghai in the last few years. (4)for 表示延续一段时间. I’ll study in the U.S for two years I’ve waited for Bingo for half an hour.

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