问题描述： some years later robots can walk with two legs.改为否定句 1个回答 分类：英语 2014-10-27 问题解答： 我来补答 some years later robots can't walk with two legs. 再问： some为什么不变any 再答： some years later在这是作状语，不用改为any 区别：There are some people in the room .-> There aren't any people in the room 展开全文阅读
