问题描述: buying是什么用法you are thinking about buying it 1个回答 分类:英语 2014-11-19 问题解答: 我来补答 about 是介词 介词后面用动名词(1) to为介词后加动名词,如 devote to献身于 ,come to 谈到(2) of后加动名词 I am fond of playing tennis.(3) before/by/on/from 后加动名词 如 He washed his hands before having lunch. 展开全文阅读