
Yang ling is good at Arts.Liu Tao is good at running.The girls are good at Maths.I am good at singing. 举了那么多例子懂了吗?就是后面如果是名词的话就是原型,如果是动词就加ing。

Yang ling is good at Arts.Liu Tao is good at running.The girls are good at Maths.I am good at singing. 举了那么多例子懂了吗?就是后面如果是名词的话就是原型,如果是动词就加ing。