问题描述: His earphones were on the desk just now.改为否定句:改为一般疑问句:肯定回答:否定回答: 1个回答 分类:英语 2014-10-28 问题解答: 我来补答 否定句:His earphones weren't on the desk just now.一般疑问句:Were his earphones on the desk just now?肯定句回答:Yes,they were.否定句回答:No,they weren't. 展开全文阅读