上课之前，你必须购买阅读材料。
You are required to purchase the readings before classes begin.
请在上课之前把你们的练习交上来。
上课之前，我的老师准备了一些卡片。
在上课之前，小朋友们，我们猜个谜语，好不好？
上课之前你得填一些表格。
我和他成为朋友是在一天早晨上课之前。
We'd made friends one morning before school, when he saw me sitting alone, pretending to do homework.
每天清晨去大学上课之前。
上课之前你得填一些表格。
上课之前，那个懒惰的小孩还没预习好。
在您决定上课之前，我们将安排试上课。
In the class before you decide, we will arrange trial class.
开始上课之前，请我们恳求上主的福祈祷。
Before we start the class, let us ask the blessing from the Lord.
请在第一天上课之前安排申请好有关帐号。
约翰在上课之前大体浏览了一遍阅读作业。
上课之前准备妥当，衣冠端正，姿势亦端。
Before class begins, one must come prepared, with neat attires and proper posture.
上课之前你要预习课文。
新学期的学费必须在第一次上课之前缴付。
The full amount should be paid before the first lesson of each term at the latest.
大家早上好。上课之前我点一下名。露西在吗？
正式上课之前，老师要对全班学生进行点名。
在学校上课之前，我们会有一个英语单词听写。
And before the class in the school, we will have an English words dictation.
在上课之前你必须写出教案，学校会定期检查。
You have to write teaching plans for every class. School will check them.
上课之前及时到达。
昨天上课之前的热身运动使我今天的腿都不能伸直。
Yesterday, as a warm-up exercise before class so I can stretch out the legs.
今天是教师节，上课之前我们祝所有的老师教师节快乐。
Today is teachers' day. We say happy teachers' day to all of our teachers before class.
今天是教师节，上课之前我们祝所有的老师教师节快乐。
Today is Teachers'Day. We say happy Teachers' Day to all of our teachers before class.
阮风华不得不在上课之前进行自学，然后每天放学之后学习5个小时。
Ruan had to earn his teachings by applying himself before and after school for five hours everyday.
然而第二天上课之前教授听说了她们的计划，所以他策划了一番。
The professor, however, got wind of their scheme just before class the following day, so he bided his time.
今天在学校里我急着在上课之前上厕所，就找了一幢不熟悉的建筑。
Today, I was in an unfamiliar building on campus and I needed to use the bathroom before class started.
肖已经和他以前的好朋友兼室友疏远了，因为室友去上课之前磨磨蹭蹭让他受不了。
Xiao has been estranged from his roommate and former buddy because he was short-tempered with him for dawdling before leaving for classes.
肖已经和他以前的好朋友兼室友疏远了，因为室友去上课之前磨磨蹭蹭让他受不了。
Xiao has been estranged from his roommate and former buddy because he was short-tempered with him for dawdling before leaving for classes.
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