介词第一节 概说1 概说介词(preposition) 表示它后面的名词或代词等与其他句子成分的关系.介词之后一般有名词或代词或相当于名词的其他词类、短语或从句做它的宾语,称介词宾语.介词和介词宾语合称介词短语.介词与动词、名词、形容词常有比较固定的搭配,学习时应特别注意。 2 介词的种类简单介词: at, by, for, in, from复合介词: into, onto, without, within双重介词: from under, since before, until after, from across短语介词: in front of, because of, ahead of有的介词可以兼作副词( 如around, over) ，有的介词可以兼作连接词( 如after, before, until) 3 介词的作用定语: The key to the door is still here.状语: The book is very popular with old people.表语: Japan is to the east of China.作宾语补足语: Make
