介词between与among的用法辨析

A.介词between 表示“在两者之间”如：Don’t sit between the two girls.

B.介词among表示“在…当中（三者或以上）”如：They lived among the mountains in the past.

介词besides与except的用法辨析

A.介词besides表示“除…之外（全部计算在内）”如：We have seen the crocodile besides Li Fang.

B.介词except表示“除…之外（不计算在内）”如：We are all Chinese except Tomin our class.