Don't forget to write to me.

不要忘记写信给我。

He is playing on the slide over there.

他正在那边溜滑梯。

I ought to be on time.

我应该准时到。

I will take an escalator.

我将去搭手扶电梯。

In university, students are trained to become teachers and engineers.

大学的学生被训练成为教师和工程师。

No matter what comes up, don't look back.

不论发生什么事情，你也不要回头看。