1. my father can play chess. 陈述句
我的父亲会下棋.
Can your father play chess?一般现在时
你的父亲会下棋吗?
Yes, he can. 肯定回答
No, he can't. 否定回答.

2. my father can play chess陈述句
我的父亲会下棋.
What can your father do? 特殊疑问句,对play chess的提问
你父亲会什么?