选修...课程的英文：
take classes in
Students have a free choice of courses in their final year.
学生在最后一学年可以自由选修课程。
I will definitely regret it if I take a class without any of my friend in it.
如果我选修的课程没有朋友去上,我绝对会后悔的
v. 拿，取；带；获得；采取；承担；吃；耗费；乘，搭；以为；理解；走；抓住
a catch; a take; a taking
捕获量
take a nap; take a snooze
小睡一下;睡午觉
take service with
在￥帮佣
take a lark with
同￥开玩笑
Will you take a check?
你要再核对一下吗？
n. 班级；阶级；种类
v. 分类；把…分等级
adj. 很好的
It is a step class.
这是踏板操训练班。
The class dismissed.
下课了。
The class teacher sectioned the class for dialogues.
老师把班级分组进行对话练习。
The class teacher dismissed the class on time.
教师按时下课。
A second - class letter is slower than a first - class.
二类信比一类信件慢。