用英语提醒老师已经下课了应该怎么说？

已经下课了：the class is over
你下课了
Your class is over； You class
； You after class
下课了吗 Class is over； Class yet ； After school
可以下课了 Can be a class
一会就要下课了。Class will be over before long.
例句：
1.那么就下课了，没有问题了吗？

Then,we need to dismiss. No more questions?

2.茱莉亚在紧挨着门的过道上坐了下来，看着自己手腕上的兆丰手表——太好了，还有半分钟就下课了。

She sat down on the pavement next to the doors and looked at the Mega Time watch on her wrist. Perfect.
希望能对你有帮助，望采纳！

Sorry,Mr **,the class was over already