上课时坐好，保持安静。

Sit and keep silence in class.

youdao

上课时一定要保持安静。

Do keep quiet in class.

youdao

上课时，我们不应同时发言，而应轮流发言。

In class we should not talk at the same time; we should take turns.

youdao

许多孩子在大班上课时学习效果不好。

Many children can't function effectively in large classes.

《牛津词典》

因为到了上课时间，她急忙跑到教室。

As it was time for class, she hurried to the classroom.

youdao

在上课时不要向外看。

Don't look out in class.

youdao

到上课时间了。

It's time for classes.

youdao

上课时，他总是一言不发，安静地像个害羞的小姑娘。

During class, he would never say a word and was quiet like a shy girl.

youdao

上课时，我算得上是世界上最忙的人了。

When I am in class, I think I'm the busiest student in the world!

youdao

下次上课时，教授发还了试卷。

The next class period, the professor handed the tests back out.

youdao

他们上课时总是这么吵吵闹闹的吗？

Are they always making noises like this in class?

youdao

上课时你必须认真地听老师讲。

You must listen to your teacher carefully in class.

youdao

在上课时你应该仔细听老师讲课。

You should listen closely to the teacher in class.

youdao

我们将打电话联系你安排上课时间。

We will call you to schedule the class .

youdao

四天制教育的变化包含增加一小时上课时间。

Change involves adding another hour.

youdao

当开始上课时，学生们停止了交谈。

When the class began, the student stopped talking.

youdao

老师开始上课时先提了个问题。

The teacher began his class with a question.

youdao

这个小男孩在上课时睡着了。

This little boy fell asleep during the lesson.

youdao

上课时老师要他进行翻译。

In class the teacher asked him to translate.

youdao

由于上课时讲话，老师严厉地批评了她。

The teacher came down on her for talking in class.

youdao

新英语老师上课时先给我们讲了个笑话。

The new English teacher began our class with a joke.

youdao

他们的孩子在下午上课时也被夺去生命。

Their children were killed as they sat down for afternoon classes.

youdao

每天早上，她让艾萨克上课时读一段文章。

Every morning, she let Isaac read a paragraph from an article in the class.

youdao

首先，我们上课时必须仔细地听讲和阅读。

First, we must listen and read carefully in class.

youdao

如果你不得不在上课时离开，那就悄悄地走。

If you must leave during class, do so quietly.

youdao

如果你不得不在上课时离开，那就悄悄地走。

If you must leave during class, do so quietly.

youdao