He recorded the class rehearsing before the performance.
他录下了演出前班级的排练。
He'd never been in a class before and he was not even sure that he should have been teaching.
他以前从未讲过课，他甚至不能确定自己是否应当从事教学。
I had just enough time to finish eating before the bell rang and I was off to my first class.
我在铃响前刚好有时间吃完，然后就去上第一节课了。
You're taking a journalism class and you've done some reporting before in high school, right?
你在上新闻学的课，且以前在高中做过一些报道，对吗？
Before class, review your notes you have taken before you come to class.
课前复习来上课前做的笔记。
Before class ended, one student asked if the last question would count toward our grade.
下课前，一个学生问最后一个问题是否算在我们的分数里。
She had never flown first class before.
她以前从未坐过飞机的头等舱。
We test your English before deciding which class to put you in.
我们测验过你的英语后再决定把你分在哪一班。
Check the markers before the class.
上课前检查一下麦克笔。
They are supposed to do sixty class hours of volunteer work before graduation.
他们应该在毕业前做60个课时的志愿者工作。
Did you preview before the class?
你在上课前有预习的吗？
We've talked about Hume before in class.
我们之前在课上讨论过休谟。
We've talked about Hume before in class, right?
我们之前在课上讨论过休谟，对吧？
This is a really good topic to do with the class before an exam because it's a little bit of a lighter topic.
这对于考试之前的一节课来说是一个非常好的课题，因为这是一个稍微轻松一点的课题。
Let me finish this diagram I started before class.
让我把这张课前画的图画完。
I've never had a music class before.
我以前没有上过音乐课。
It wasn't long before me integrated into my new class.
没过多久，我就融入了新班级。
These students always sing an English song before class.
这些学生总是在课前唱一首英文歌。
The student on duty should hand out the exercise books before class.
值班生应该在上课前分发练习本。
My biology teacher, Mr. White, came to the classroom five minutes before the class began.
我的生物老师怀特先生在上课前五分钟来到了教室。
When I got into college, things changed. I suddenly found myself out of class before noon time.
当我进入大学后，情况发生了变化。我突然发现自己不到中午就下课了。
The mobile phone was a distraction to students during school hours and it also brought teachers so much trouble in class before.
手机会使学生在学校里分心，它也给老师上课带来了很多麻烦。
My chemistry teacher Mrs. Louise usually gave us the instruction paper the night before the lab class and let us read it.
我的化学老师路易丝夫人通常在实验课的前一天晚上给我们说明书，让我们阅读。
Before each math class, I see her either helping the class at the front, or bringing the homework of the class together.
每次数学课前，我都看到她要么在前面辅导同学，要么就是在把全班的作业整理在一起。
Putting up your hand before asking a question helps the class pay attention to the lesson.
在提问前举手可以帮助全班同学注意听课。
Dan's class know Dan is in the hall before they see him.
丹的同学还没见到他，就知道他在大厅里了。
To keep yourself safe in the P.E. class, you are supposed to stretch before exercising.
为了保证自己在体育课上的安全，你应该在锻炼前做伸展运动。
I have to bat out a term paper before class.
我必须在上课前匆匆写出一篇学期论文。
Before class starts or at home, if you know what the lecture is on, try to read the chapter before class starts.
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.
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。
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