昨天因为你没有来，我们就复习旧课了。

Since you were absent, we reviewed the old lessons yesterday.

youdao

首先，让我们来复习一下旧课。

First of all, let's review the old lessons.

youdao

我们在讲新课之前复习一下旧课。

Let's review the last lesson before starting a new one.

youdao

我们在讲新课之前复习一下旧课。

Let's review the last lesson before starting a new one.

youdao