问题描述: After working for a long time,.但为什么是Having working for a long time. 1个回答 分类:英语 2014-10-22 问题解答: 我来补答 没有Having working for a long time.只有以下两个:Having worked for a long time.Having been working for a long time.这种用动名词开头的句子很多的. 展开全文阅读