Did you preview before the class?
你在上课前有预习的吗？
Check the markers before the class.
上课前检查一下麦克笔。
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。
The bell will ring before the class.
上课前会听到铃声。
Before the class, my teacher prepared some CARDS.
上课之前，我的老师准备了一些卡片。
You need to complete some forms before the class.
上课之前你得填一些表格。
He always reviews the knowledge before the class.
他总是在课前复习知识点。
Your homework must be handed in before the class is over.
你们的作业必须在下课之前交上来。
Readings must be completed before the class number noted.
在每堂课上课前，需读完该课标注中的阅读资料。
The deadline for enrollment is three days before the class.
注册最后期限是上课前三天。
It is called before the class body is evaluated, as Listing 3 shows.
在类主体被处理之前，先会调用它，如清单3所示。
You have to look through these papers before the class is over.
你们得在下课前将这些试卷看一遍。
Before the class was over, I went home without telling my teacher.
课还未完，我没有告诉老师就回家了。
Make sure you get your curriculum schedule before the class begins.
确保在上课前拿到课程表。
Please email your question to the professor the day before the class.
请在上课前一天用电子邮件把这些问题发送给教授。
No one spoke as, papers in hand, the professor stood before the class.
教授拿着试卷站在同学们前面，没有人出声。
Reading of textbook chapters before the class is strongly recommended.
强烈建议在上课前读过教科书的特定章节。
And before the class in the school, we will have an English words dictation.
在学校上课之前，我们会有一个英语单词听写。
Be here a few minutes early. You need to complete some forms before the class.
请早几分钟到，你在上课前要填几份表格。
He bit the dust before the class when the teacher scolded him in the morning.
老师早晨申斥了他，这使他在全班同学面前丢了面子。
I realized why he slipped into the office oddly before the class — It was nothing but his tricks!
我想起来，课前，不知道什么事，红兵曾一闪身进了办公室——原来是他捣的鬼！
Don't eat anything two hours before the class and you may eat little half an hour after the class.
上课前两小时不能进食，课后半小时方可少量进餐。
Jack: Oh, fine, fine. Be here a few minutes early. You need to complete some forms before the class.
啊好好。早几分钟到这里吧，你需要填一下表格。
Confirmed by the client, formal contract will be signed between both parties before the class started.
上述内容都得到客户的肯定后，我们将起草并签订培训合同，正式开始上课。
Be sure to let your instructor know about any orthopedic problems or special needs you may have before the class begins.
确信你的教练知道你的整体状况，或是一些特殊需要。
In this example, the declarative call is placed directly before the class definition, specifying that this permission be applied to the class level.
在这个范例中，宣告式呼叫被直接放入类别定义之前，表示这个使用权限将被套用至该类别等级。
"This happens during our working hours, so when I exercise here, it's like I'm working at the same time," she said, tying her hair back before the class started.
“这个项目是在我们的工作时间进行，所以我在这儿锻炼的时候，就好像同时也在工作，”在课程开始前，她一边说一边把头发扎到脑后。
The men, rugged-looking and some of them with flecks of gray in their beards, look daunted but determined as they take turns standing up before the class to read basic sentences off the blackboard.
这些男人看起来饱经风霜，他们中的一些人的胡子上还有一些灰色的斑点，他们轮流站起来当着全班的面朗读黑板上的简单句子时有些不安却又十分坚决。
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。
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。
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