一年前参加篮球比赛获第三名用英语怎么说？

One year in the past, we were involved in a basketball game and won the third position.这种表达方式稍微有点生硬，但语法上是对的，适合初学者理解句子结构。

Back a year ago, our team joined a basketball tournament and ended up taking third place.这里用back a year ago开头，更有回忆的感觉，took part in也可以换成joined。

A year ago, we participated in a basketball competition and secured third place.这句话完整描述了去年参赛并获季军的经历，用词准确且正式。