现在进行时定义定义：现在进行时表示现在正在发生的动 作或存在的状态。结构：1. 肯定句：主语+be ( is am are) +现在分词+其它。如：We are having an English class now.2. 否定句：主语+be (is am are ) +not+现在分词+其它。如：We are not having an English class now.3. 一般疑问句：Be (is am are ) + 主语+现在分词+其它 +？ 回答： Yes, 主语+be (is am are ) . No , 主语+be (is am are ) +not。如：Are you having an English class now? Yes, we are . No, we arent4、 时间状语：now. look! Listen! 如：1. Listen! Lily is dancing in the next room. 2. Look! The dog is running
