ability表示“能力”、“能够”,多为不可数名词；表示“才能”、“才干”,多用复数形式。
ability：n.能力；才能；本领；才智；
ability复数： abilities
I try to do my job to the best of my ability.
我尽全力做好我的工作。
His linguistic ability served him well in his chosen profession.
他的语言能力对他所选择的职业大有帮助。
A gentle form of exercise will increase your ability to relax.
和缓的运动锻炼会提高自我放松的能力。
温馨提示：
