这些学生自愿为演出做了些事 翻译

①These students have voluntarily made a matter for the performance
②These students voluntarily perform done something

These students volunteered to do something for the performance.

注释：volunteer to do sth.自愿做某事

These students volunteered to do something for the performance.
These students were volunteers who did something for the performa-nce.
These students did something for the performance voluntarily.