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介词 I. 要点 1、介词和种类 (1) 简单介词，常用的有 at, in, on, about, across, before, beside, for , to, without 等。 (2) 复合介词，如 by means of, along with, because of, in front of, instead of 等。 2、介词和其他词类的习惯搭配关系 (1) 和动词的搭配，如 agree with, ask for, belong to, break away from, care about 等。 (2) 和形容词的搭配，如 afraid of, angry with, different from, good at 等。 (3) 和名词的搭配，如 answer to , key to, reason for, cause of, visit to 等。 3、介词短语可以有自己的修饰语，这种修饰语通常有 right, just, badly, all, well, directly, completely 等少数几个副词。如： He came right after dinner. He lives directly opposite the school. 4、 某些介词的意义与用法举例 (1) at, on, in (表时间) 表示时间点用 at，如 at four o'clock, at midnight 等；表示不确定的时间或短期假日也用 at，如 at that time, at Christmas 等。 指某天用 on, 如 on Monday, on the end of November, 指某天的朝夕用 on，如on Friday morning, on the afternoon of September lst 等。 指长于或短于一天的时段用 in，如 in the afternoon, in February, in Summer, in 1999 等。 (2) between, among (表位置) | 
