1.Im doing my homework；
2.He is playing with a toy；
3.She is watching TV；
4.We are swimming；
5.We are cleaning our classroom；
6.Im making a kite；
7.He is reading a book.
动词-ing形式（v-ing）包括传统语法的动名词和现在分词两个部分。动词的-ing形式具有动词的特征，同时又具有名词、形容词和副词的特征，因此它可以在句中作主语、表语、定语、宾语、宾语补足语和状语。（又称现在分词，现在进行式，动名词)
