class
本身没有这个意思，也就是说不表示同学的意思，它表示等级，班级。但是所有词的义项都是根据这个词所在的语境选取的。比如：The class agree with the teacher's advise.其中的class也表示同学们。
Class的具体解析
class常见的是作名词，有班级、等级、阶级的意思。No talking in class！课上不许讲话！
n.
等级, 级别
As actress Jane is not in the same class as Susan.
作为演员, 简和苏姗不是同一层次。
阶级, 社会阶级
Society is divided into upper, middle and lower classes.
社会分为上层、中层和下层阶级。
社会等级制度
班, 班级, 年级
The class is too large, we shall have to divide it.
这个班太大了, 我们得拆班。
一节, 课
种类, 门类
Scientists divide animals, plants and rocks into classes.
科学家把动物、植物和矿物分类。
Cocaine is classed as hard drugs。可卡因被归为毒品一类。
优雅, 高尚
She has got class.
她很有气质。
vt.
把…归入某等级
Class the books in this category.
按目录把书分类。
She has thirty pupils in her English class.
她的英语班上有三十个学生。
He has been invited to lecture about his method of writing to a class of English students.
他被邀请给一个英语班的学生讲授他的写作方法。
We have four periods of English a week.
我们每星期上四节英语课。
We had a stiff test in the English class.
英语课上，我们进行了一场很难的考试。
