able的名詞形式怎么寫

　　句型

　　1、His ability falls short.

　　他的能力不足。

　　2、The acting abilities of both were well-known.

　　這兩個人的表演才能是眾所周知的。

　　3、Almost everyone has some musical ability.

　　幾乎人人都有一些音樂才能。

　　4、He had the all-round ability as a director.

　　他有當導演的多方面才能。