■另外，请注意体会以下各句，受定语从句修饰的名词（先行词）均带了不定冠词（因为它们均表示不确定的某一个）：
Don’t punish a child who wets the bed. 别惩罚尿床的孩子。
He is a sculptor who works mainly in stone. 他是个雕刻家，以石雕为主。
He’s a family man who rarely goes out with his friends. 他是个恋家男人，很少跟朋友出去玩。
My grandmother has a home help who comes and cleans twice a week. 我奶奶雇了个家务助手，每周去打扫两次。
The scorpion has a sting that can be deadly. 蝎子有可以致命的螫针。
This was a problem that I just couldn’t handle. 这是一个我应付不了的问题。
It is a problem that requires constant monitoring. 这是个需要经常关注的问题。
Boxing is a sport that always attracts large crowds. 拳击这种运动始终吸引大批观众。
It’s not a name that exactly trips off the tongue (=is easy to say). 这不是一个顺口的名字。
I needed a job which would enable me to work at home. 我需要一份能够在家里干的工作。
Good eyesight is a quality which is extremely valuable for a hunting animal. 敏锐的视力对捕食动物来说非常重要。
　　　——风起九州动京华，云涌三国否喑哑。