小学五年级英语语法知识点大全（最全整理）！

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.2一般现在时表..