我们在教室上中文课。

Wǒmen zài jiàoshì shàng Zhōngwén kè.

We have Chinese classes in the classroom.

下课后，大家离开教室去吃午饭。

Xiàkè hòu, dàjiā líkāi jiàoshì qù chī wǔfàn.

After class, everyone leaves the classroom to go have lunch.

下雨的时候，学生们在教室里做作业。

Xiàyǔ de shíhou, xuéshengmen zài jiàoshì lǐ zuò zuòyè.

When it rains, the students do their homework in the classroom.