他的成绩落后了，因为他缺了几节课。

His grades are lagging because he missed several classes.

在前几节课我们学习了……

In the preceding classes, we have learned …

我打算挤出时间上几节课。

I plan to get a few lessons in.

你一天教几节课？

How many lessons you teach per day?

非常直接的事情。事实上，以后我还会开几节课来多讲一点这些话题的。

Very straightforward stuff. I will actually have, again, lessons on more of these items for you in the future.

一些游泳池还为游客提供游泳教习课程，大部分人经过几节课的学习后都可以简单游一游。

Swimming lessons are given at some pools for the learners. Most people can learn to swim a little only in a few lessons.

但有一次看了电视上的滑冰选手就有什么东西进入你的内心世界，所以你穿上冰鞋上了那么几节课。

But the sight of the skaters on TV gets something going in the pit of your stomach so you get some skates and take a few lessons.