我们从初中就开始接触介词和连词,这些词为数不多,但却是英语中难以掌握的词类,也是历年高考中的考点,我们从两类词的定义、类别、功能、考试热点等几个方面进行讲述。一、介词介词是一种虚词,不能独立充当句子成分,需与动 We begin to contact with prepositions and conjunctions from junior high school. These words are few, but they are difficult to grasp in English part of the word, but also test centers over the years, we from the definition of two types of words, categories, features, exams, several hot spots Aspects. First, the preposition Preposition is a kind of function words, can not act independently as a sentence component, need and action