前面加冠词the，例如：

1、He was on a real high after winning the competition.他赢了那场比赛后高兴极了。

2、The competition is open to young people under the age of 18.这项比赛让18岁以下的青少年参加。

3、She won first prize in the competition.她在竞赛中获得头奖。