问题描述： 现在进行时的用法 看到哪些词用现在进行时 1个回答 分类：英语 2014-12-12 问题解答： 我来补答 现在进行时1.概念：表示现阶段或说话时正在进行的动作及行为.2.时间状语：now,at this time,days,etc.look .listen(进行时的一般标志)3.基本结构：be+doing He is doing his homework now.4.否定形式：be+not+doing.He is not doing his homework now.5.一般疑问句：把be动词放于句首.Is he doing his homework now. 展开全文阅读
