问题描述: On his way home he often sees an old man sit under the tree.改错 1个回答 分类:英语 2014-10-25 问题解答: 我来补答 On his way home he often sees an old man sitting under the tree. 再问: 为什么将sit 改为sitting?谢谢 再答: see sb doing sth看见某人正在做某事(看到的是部分过程)再问: 为什么将sit 改为sitting?谢谢 展开全文阅读