现在进行时

　　主要叙述正在发生的事情。

　　句末常出现now;句首常出现look, listen。

　　组成主语+be +动词ing形式

　　I am reading English.

　　They are swimming.

　　He is playing football.

　　否定句：在be后加not

　　I am not reading English.

　　They are not swimming.

　　He is not playing football.

　　疑问句：将be 放到第一位。

　　Are you reading English?

　　Yes, I am./ No, I am not.

　　Are they swimming?

　　Yes, they are. / No, they aren’t.

　　Is he playing football?

　　Yes, he is. / No, he isn’t.

　　动词变ing形式

　　1.在动词末尾加ing. 如：play- playing

　　2. 末尾有e，要去e加ing. 如：ride – riding

　　3. 末尾以辅音元音辅音结尾，双写末尾的辅音字母.如：swim-swimming