六年级英语上册《四大时态》知识归纳，掌握不丢分！
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简介
现在进行时 表示正在发生的事情或进行的动作，常与now,listen,look等词连用，结构是主语+be动词(am, is, are)+动词ing. 如：It is raining now. 外面正在下雨 It is six o’clock now. 现在6点了 My parents are reading newspapers in the sitting room. 我父母正在客厅看报纸 Look! The children are having a running race now. 看！孩子们正在赛跑 问句将be动词移前，否定句在be动词后+not.
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