ity为后缀的单词有：
angularity n. 有角,成角状,生硬；
animosity n. 憎恶，仇恨；
annuity n. 年金,养老金,年金领受权；
anonymity n. 无名，匿名；
antiquity n. 古代；古人们；
ability n.能力；能耐，本领；
abnormality n. 反常；变态
What criteria are used for assessing a student's ability?
用什么标准来评定一个学生的能力？
His outstanding ability earned him a place on the team.
他非凡的能力为他在队中赢得了一席之地。
The system has the ability to run more than one program at the same time.
该系统能够同时运行一个以上的程序。
A woman of her ability will easily find a job.
有她那样才能的'女性找工作不难。
These results are a further proof of his outstanding ability.
这些成果进一步证明了他的杰出才干。
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