她们在教室后面说悄悄话。

They were having a private conversation at the back of the classroom.

老师听见学生在教室后面说话。

The teacher hears the students talking in the back of the classroom.

那个青少年懒散地坐在教室后面。

The teenager slouched in the back of the classroom.

老师让那些调皮的学生站在教室后面。

The teacher made the naughty students stand at the back of the classroom.

老师注意到学生在教室后面打瞌睡点头。

The teacher noticed the student nodding off in the back of the class.

作为一名迟到者，他不得不坐在教室后面。

As a latecomer, he had to sit at the back of the classroom.

我看见许多老师坐在教室后面。

I saw many teachers seated at the back of the classroom.

我看到一些村子里的人坐在教室后面。

I saw some villagers seated at the back of the classroom.

坐在教室后面的是几位老教师，他们在认真地听新教师的课。

Sitting at the back of the classroom were several old teachers, listening attentively to the new teacher.

让我们随便看一个课程的…历史老师这样写道:戴拉蒙德今年什么都没学会，因为他将自己所有的时间都浪费在教室后面的聊天上。

Let's choose a subject… here we are, History:Diarmuid has failed to learn anything this year because he spends all his time chatting at the back of the classroom.