competition在此处是复数,要加s。逗号后最好改成 and received, 去掉for,句子就对了。
I actively participated in various competition about art, and received the first prize in provincial race 3 times.
我积极参加了一些关于艺术方面的比赛,3次获得了省级奖项
I took an active part in some competitions about art, and won the provincial awards for 3 times.
I actively participated in various competition about art, receiving the first prize in provincial race for 3 times.
建议修饰如下:
I actively participated in various arts competitions and won three first prizes 三次冠军 (?)at provincial level.
克食堂陆靥阐明锻