the ability to do sth 与the ability in doing sth之间有什么区别?

问题描述:

the ability to do sth 与the ability in doing sth之间有什么区别?
the ability to do sth 和the ability in doing sth之间有什么区别?
可不可以再清楚写呢?
最好有例子和翻译。

前半句是有做某事的能力;
后半句是做某事的能力.
前半句可视为强调人,后半句强调能力.