Classes have already started, so I have a lot to do.

学校已经开始上课了，所以我有很多事情要做。

youdao

Staff: I'm sorry, but the last date for registration has passed. The classes have already started.

职员：对不起，报名已经截止，课程已经开始了。

youdao

DAWN has just broken but classes have already started at the village school in Aqualaar, in the Garissa district of Kenya’s arid north-east.

尽管天刚破晓，阿奎拉乡村学校就已经开始授课了（阿奎拉位于肯尼亚东北部气候干燥的加里萨区）。

youdao

Five new players already have enrolled and started classes.

WSJ: With staff in place, Syracuse, Shafer mold team