现在进行时 ByJessicaWhat is Ali doing? He is walking. He is reading a book. He is dancing. He is flying a kite.What are they doing? They are playing basketball. They are running.现在进行时的含义与构成 含义：表示 此时此刻 此时此刻或 一段时间内 一段时间内正在进行的 动作或发生的事情 Heisreadingabook. 他正在看书。 Sheisteachingataschool. 她在一所学校教书。 标志性词语：now Look! Listen! at present at the moment 构成：主语+be （am,is,are ）+doing （现在分词 ） 构成：主语+ be+ doing Tomisdoinghishomework. 第一人称+am+doing 第二人称+are+doing 第三人称+is+doing Im/Youre/Hes/Shes/Were/Theyreworking. 口诀：我用am
