在课程开始之前，想想你学到了些什么。

Before classes start up again, think about what you learned.

youdao

在课程开始之前或者是在家里，如果你知道这个课要讲什么，试着在课程开始之前看看这章的内容。

Before class starts or at home, if you know what the lecture is on, try to read the chapter before class starts.

youdao

在十年级的时候，我就开始研究那些小册子中的大学录取条件。在我进入大学之前，就学习这些课程。

I started looking at college brochures in 10th grade; took extra courses to finish at the head of my class.

youdao

But before I get started, I have to point out something a little bit unusual about this class We're being filmed.

但在我开始之前,我要告诉大家这个课程的一点特别之处,我们会被录像

耶鲁公开课 - 心理学导论课程节选

We're actually going to do one more clicker question to get started with today, and as we do, I'll explain something we're going to be trying today, which is a little bit of a friendly competition in terms of answering the clicker questions correctly.

我们将在开始讲授今天的课程之前,再多做一个选择题，我先来说明一下做这件事的原因，这实际上是一个,回答选择题的小比赛。

麻省理工公开课 - 化学原理课程节选

And before we go into some of the technicalities of the class such as the syllabus, I want to end with a story about Peter Drucker.

在我们开始讲本课程的一些细节比如教学大纲之前，我想先讲一个关于Peter，Drucker的故事。

哈佛公开课 - 幸福课课程节选