We do morning exercises before classes begin.

上课前我们做早操。

youdao

When starting college, most students enjoy a week's stay on campus before classes actually begin.

开始上大学时，大多数学生都喜欢在真正开课前在校园里呆上一周。

youdao

If you have other daily routines, such as exercising or talking on the phone with family, work those into your day-to-day life before classes start so that you get a better idea of how they fit in with your schedule.

如果你有其他的日常习惯，如锻炼身体、与家人通电话，你要在开课前将这些习惯融入到日常生活中，这样就能更好地结合这些习惯来进行日程安排。

youdao

The program includes English classes in the summer before school starts for those who need them.

VOA: special.2009.06.18

and that's about it before classes pick up. It really varies.

但那是在课业重回正轨之前。所以，学习时间很不同。

考试应该这么准备 - SpeakingMax英语口语达人

Some of you would have been in classes that do that before.

有些同学可能之前参加过这种课程

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