The Present Continuous Tense
现在进行时态
1.定义:表示现在正在进行的动作。2.构成:主语+be(am, is, are)+动词-ing(现在分词)。

句型转换
1. lam reading.(对画线部分提问)Whatareyou doing?
2. Is Kate eating lunch at school?(作肯定回答)
- Yes,she_ is.
3.The students are having English class.(改为否定句)
The students aren’t having English class.