able的名詞形式是什麼?

They overestimated his ability when they promoted him.

他們提拔他的時候高估了他的.能力。

Contestants were grouped according to age and ability.

參賽者按年齡和能力分組。

His outstanding ability earned him a place on the team.

他非凡的能力為他在隊中贏得了一席之地。