艺术课已经开始了。

The art class has started.

youdao

他到校时，第一节课已经开始了。

When he got school, the first class had begun.

youdao

艺术课，化学课，历史课或数学课已经开始。

Art class, chemistry class, history class or maths class have started.

youdao

而在此之前，电影课的影响已经开始走出了中国。

Even before then , films course had been well-known in other countries.

youdao

而在此之前，电影课的影响已经开始走出了中国。

Even before then , films course had been well-known in other countries.

youdao