class复数形式是加es，即classes。class可作名词、动词和形容词，作为名词时，意为班级、课、上课、系列课程等；作为动词时，意为把…归入某等级、把…看作；作为形容词时，意为很好的、优秀的、出色的。
class的基本含义及用法介绍
1、可作名词，意思有班;班级;课;上课;(某科目的)系列课程。
例句：We were in the same class at school.
我们在上学时同过班。
The whole class was/were told to stay behind after school.
全班被告知放学后留下。
See me after class.
下课后来见我。
I've been taking classes in pottery.
我一直在上陶器制作技术课。
The party tries to appeal to all classes of society.
这个政党尽力吸引社会各阶层人士。
It was good accommodation for a hotel of this class.
就这种档次的旅馆来说，住宿条件算是不错了。
2、可作动词，意思有把…归入某等级;把…看作。
例句：Immigrant workers were classed as aliens.
移民来的工人被归入侨民类。
Since the birds interbreed they cannot be classed as different species...
由于这些鸟进行杂交繁殖，不能把它们归为不同的物种。
3、还可作形容词，意思有很好的;优秀的;出色的。
例句：She's a real class act .
她真是魅力非凡。
Kite is undoubtedly a class player.
凯特绝对是个一流选手。
