1.class用作动词的意思是“把…归入某等级”,是及物动词,接名词或代词作宾语。
2.class还可作“把…看作”解,接以形容词或“as+n.”充当补足语的复合宾语。
3.class常与介词as, among, with连用。

class under(v.+prep.)
把…列入 consider (sb/sth) to belong to the same type as sb/sth
▲class sth under sth
They classed this insect under the Coleoptera.他们把这种虫列入甲虫类。

class with(v.+prep.)
把…与…归入一类 consider (sb/sth) to belong to the same type as sb/sth or be equal with sb/sth
▲class sb/sth with sb/oneself/sth
How dare you class my husband with yourself?你怎敢把我的丈夫当成像你那样一类的人?
The critic classed him with the best writers of the age.那位评论家把他列入当代第一流的作家中。

用作及物动词
▲S+～+n./pron.
They classed two specimens together.他们把两个标本列入同类。
Class the books in this category.按目录把书分类。
◇ 用于be ～ed结构
At the second year's examination, he was not classed at all.他在第二年的考试中落选了,不能被编班。
用作宾补动词
▲S+～+n./pron.+adj.
His paper classed him very low.他的考卷使他排名很低。
▲S+～+n./pron.+as n.
I classed him as a genius.我认为他是一个天才。
People class the immigrant workers as resident aliens.人们把移民来的工人归入外侨类。
Modern astronomers class the sun as a “Yellow Dwarf”.现代天文学家认为太阳属于黄矮星类。
◇ 用于be ～ed结构
North Carolina is classed as an agricultural state.北卡罗来纳州是农业州。
In some countries, people who disagree with the government are classed as criminals.在某些国家,凡是同政府持有不同意见的人都被视为罪犯。

［同义词］ n. classification, division, family, grade, group, kind, order, rank, set, sort, species, subdivision v. assort, classify, grade, rank
［词源］  ＜法语classe＜拉丁语classis(种类,阶级)

1.class用作名词意思是“阶级,社会等级”,指具有政治、社会或经济地位的群体,是集合名词,可与单数或复数的动词连用,多用复数形式,作“社会等级制度”解时不可数。
2.class也可作“班级”解,是可数的集合名词。可作单数使用,也可作复数使用,在美式英语中作单数用得更多些。作单数使用时,表示一个中性的无生命的整体,要用it或which来指代,谓语动词要用单数形式; 如用作复数,则表示组成这个集体的一个个有生命的成员,要用they或who来指代,谓语动词要用复数形式。使用时关键在于一致,至少在同一个句子内要一致。
3.class也可表示一节具体的“课”,是可数名词。也可抽象化,表示“上课”这一概念,这时class是不可数的,其前不用定冠词。
4.class还可表示衣着、行为等的优雅、高尚或令人赞赏的风度、外表等。

first class
第一流,头等 best in a group
The pianist was quite good but he was not in the first class.那位钢琴家弹得相当不错,但还不是第一流的。
William made straight for a first class smoker.威廉姆向头等吸烟车厢径直走去。
The first class carriages are in front.头等车厢在前面。

in a class by oneself
独一无二 better than everyone; unequalled
You can't compare him with others.In languages, at any rate, he is in a class by himself, none of the others reach anywhere near his standard.你不能把他与其他的学生相比。无论如何，在语言方面他在班上是独一无二的,没有人能达到他的水平。

in a class of one's own
无与伦比 anything else of his/its kind
Pele was in a class of his own as a footballer.贝利是举世无双的足球健将。
As an opera singer,Caruso was in a class of his own.作为一名歌剧演唱家,卡鲁索无与伦比。

no class
低劣的 bad
The house she has just bought has no class.她刚买的房子是等外品。
I don't like him and besides, he's no class.Watch his manners at meal times.我不喜欢他,再说他很低级,看看他吃饭那副样子。

real class
高级的 advanced
Quiet dignity under fire, real class.遭到攻击时表现出的无言尊严真是绝了。

the classes
上层社会 the upper classes
The classes seldom know the troubles of low classes.上层社会很少知道下层社会。
At the age 40 he entered the classes.年满40时，他进入了上层社会。

top of the class
第一流的 best in a group
Among cricketers,Ian Botham has to be top of the class.板球运动员当中,伊恩·博塞姆必定是一流的。

That class is out of hand; I should have put a more experienced teacher in charge.那个班已失去控制,我本应该安排一个更有经验的老师去。
The whole class goes solid against the monitor's suggestion.全班都反对班长的建议。
The class has elected its leader.这个班级已选出班长。
The class are, in general, very bright.总的来说,这个班级的学生都很聪明。
The class expended a great amount of time on the project.这个班在这个计划上花了很多时间。
You can question the class orally when the reading is finished.当阅读结束时,你可以口头问班上学生们问题。
The teacher read a poem to the class.老师向班上的同学朗诵了一首诗歌。
The class's unruly behaviour shamed the teacher.这班学生不守规矩的行为使老师感到羞愧。
I started attending the plant's spare-time classes in electricity.我开始上厂里的业余电工学习班。
Everyone in the graduating class wore a cap and gown.毕业班的每一个人都戴礼帽、穿礼服。
I graduated in the class of 1999.我是1999年的毕业生。
I cannot excuse you from attending my classes.我不能允许你不听我的课。
My life these days consists of studying and attending classes.近几天来,我的生活是读书和上课。
On Sunday mornings,I attended classes in industrial history and economics.星期天上午我上工业历史和经济学课。
The pupils wish their teacher good morning before classes begin.上课前学生问老师早上好。
No talking is allowed in class.课堂上不准讲话。
Make good use of your time in class. Listening to what the teacher says in class means less work later.要充分利用课上的时间。上课认真听老师讲课,以后就可以少花力气。
After class students ran outside the classroom for athletic sports.下课后学生们跑出教室搞体育活动。
The teacher cannot tolerate eating on the class.老师不容许在课堂上吃东西。
The hungry people in that country turned out in demonstration which frightened the ruling class.那个国家的饥饿群众纷纷示威游行,使统治阶级大为惊恐。
They believed that the state was “above class distinctions”.他们认为国家是“超乎阶级区分之上”的。
He is full of the concept of class struggle.他充满了阶级斗争思想。
Taxation bears heavily on all classes in Britain.捐税被英国各阶层均视为重担。
She belonged to that class of people who are accustomed to having their own way.她属于那类惯于想干什么就干什么的人。
They belong to the educated class.他们属于知识阶层。
Inequality and poverty breed class conflict.不平等和贫困滋长着阶级对抗。
Class often prevents friendship between certain people.社会等级制度往往使一些人之间不能建立友谊。
As actress Jane is not in the same class as Susan.作为演员,简不如苏珊。
The orchid is a class of plant which I have never tried to grow.兰花这类植物我从来没种过。
She is a girl with class.她是一位很有风度的姑娘。
Those drivers had class.那些司机很有派头。

in class A, of class A
这两个短语的区别在于:in class A强调场所; of class A强调所属。例如:
pupil in class A
在A班的学生
pupil of class A
属于A班的学生
in class, in the class
in class表示“课内,上课时”,而in the class表示“在这个班级里”。例如:
Try to speak as much English as possible in class.课堂上尽可能多说英语。
There are thirty students in the class.这个班级有30个学生。
class, order, rank
这组词都可表示“集团”或“派别”的划分,“身份地位”或“等级”的“差别”。其区别在于:
1.rank一般指一个可以确定的“等级”,尤指“头衔”等; order指在社会中的某个阶层或某个结合紧密的社会性或职业性团体,尤指基督教某个等级的教士或团体; class主要指社会中持有同一个目的的一个社会阶层。例如:
Even middle-class consumers in the U.S. are beginning to kick at the runaway prices.连美国中产阶级的消费者也开始对飞涨的物价表示不满。
He gained the rank of Colonel.他获得了上校军衔。
He is a member of the Order of the Garter.他是获得嘉德勋位的爵士社团中的一员。
2.class还可指按经济地位、职能或按人们所具有的某些共同特征所做的划分。例如:
This ticket doesn't entitle you to travel first class.凭这张车票,你不能坐头等车旅行。
class, course, lesson
这三个词都有“课”的意思。其区别在于:class原指同一班级学习同一学科的人,由此可引申为同学聚集在一起“上课”; course指教学中一段时期内要教完或学完的功课,即“课程”; lesson指课程所分成的“段落”,课本中的“一课”或“每次授课的单位时间”。例如:
There won't be any class today.今天不上课。
I took up a three-year course in English in middle school.在中学，我学习了三年的英语课程。
The new lesson is very difficult.新课很难。
下面这句话有两个意思:
They were in the same class.
他们的考试成绩被列入同一等级。(BrE)
他们是同一年级的学生。(AmE)

1.全班在观点上有分歧。
［误］  The class was divided in its opinion.
［正］  The class were divided in its opinion.
［析］  class是集体名词,当侧重整体时,谓语动词用单数形式; 侧重个体时用复数形式。
2.请在课后读几遍课文。
［误］  Please read the text several times after the class.
［正］  Please read the text several times after class.
［析］  表示“下课后”,应该说after class,在class前没有定冠词。