问题描述： 怎么时候句子非谓语要用完成时having done?(英语) 1个回答 分类：英语 2014-10-03 问题解答： 我来补答 当两个动作有明显先后顺序时用having done,若两个动作接连比较紧密,则用doing.例如：Finishing the work,I went out with my brother.一写完作业,我就跟弟弟出去玩了.Having finished the work,I went out with my brother.写完作业后,（稍做休息）然后我跟弟弟出去了. 展开全文阅读
