I.顾名思义,preposition意为前位、前置,然而前置词有时后置,因而又产生了postposition(后置词)一说。无论前置或后置,其功能只有一个,即介系,在两个词语之间挂钩搭桥。尽管介词各有自己的词义。但极其模糊,可变性很强,往往受搭配词语之间的关系听制约。介词of的搭配能力特别强。它可以联系动词与名词,可以联系形容词与名词,还可以联系名词与名词,等等。现分类举例如下: I. As the name implies, preposition means anterior, anterior, but the antecedent is sometimes postpositioned, which in turn creates a postposition. Either front or rear, its function is only one, that is mediated, in the two words linked to bypass. Although prepositions have their own meaning. But extremely vague, highly variable, often with the relationship between the words listening control. Prepositions of the combination of ability is particularly strong. It can contact verbs and nouns, you can contact adjectives and nouns, you can also contact nouns and nouns, and so on. Examples of categories are as follows: