内容介绍：45 个常见介词的基本用法介词短语=介词+名词1、about 基本含义：a-b-out “A 在 B 外面” 引申含义：“A 和 B 的联系” 1、在…周围：The kids are sitting about their teacher.I like the necklace about her throat. 2、环绕：The bird always flies about the fores