n. 比赛；演奏
v. 玩耍（play 的 ing 形式）
1.He hurt his back playing squash.
他打壁球时背部受伤了。
2.They were playing at being cowboys.
他们装扮成牛仔玩。
3.Who's playing on the wing?
谁担任边锋？
4.Three boys were playing marbles.
三个男孩儿在玩弹子游戏。
5.I enjoy playing tennis and squash.
我喜欢打网球和壁球。
6.Nina had been playing the piano.
尼娜一直在弹钢琴。