介词介词英语中称为“preposition”是由“前缀 pre—(在……前部)+position(位置)”构成的,所以又叫前置词。一般放在名词、代词或动名词的前面.介词是虚词,主要用来表示人、物、事件等与其他人、物、事件之间的关系,如空间位置、时间先后、因果关系、方式方法等.介词与其宾语构成介词短语.可作介词宾语的主要有名词、代词、动 名词(或动名词短语)、名词性从句等。分类特点例词简单介词即一个介词about, across, after, against, among, around, at, below, beyond, during, in, on 等等。合成介词由两个介词构成合成词into, onto, throughout, upon, within短语介词由短语构成according to, because of, instead of, up to, due to , owing to, thanks to 等等。双重介词由两个介词搭配而成from among, from behind, from under, till after, in between 等等。分词介词由现在分词转化而来considering(就……而论), including,regarding,concerning 等。兼类介词由形容词直接转化而来like, unlike, near, next, opposite 等等。介词不能独立在句中做成份,介词后必须与名词、代词、或动名词构成介词短语在句中充当一个成分,表示人、物、事件等与其它人、物、事件等之间的关系.介词短语的功能例 句作定语They didn’t find the solution to the problem.作状语We have breakfast at seven.(表时间)They were late for the meeting because of the heavy rain。(表原因)What do you mean by doing such a thing?(表方法)Nothing in the world could live without air or water.(表条件)作表语When I paid a visit to you yesterday, you were not at home.作宾语补足语I found the old building in a bad condition。介词是英语中最活跃的词类之一,使用频率相当高,其用法跟冠词一样复杂。但根据近年来高考命题的情况来看,考生需要掌握以下内容.1.表示相同或相似概念的介词(短语)的区别表示的概念介词(短语)区 别例 子时间inonatat 在一个时间点上;in 在一段的时间之内;on 在具体日子。①at 8 o’clock, at noon②in the 1990s, in January③on Monday, on a warm morningsincefromsince 指从过去到现在的一段时间,和完成时连用;from 指从时间的某一点开始.①We have not...