1.evidence / evidences

evidence 作"证据" 解时,是抽象名词； 作"迹象"解 时,既是可数名词又是不可数名词。

Is there any evidence for his guilt? There are evidences that somebody has been living here.

2.relation / relations

relation 作抽象名词解时,指"联系,关联"； 作可数名 词解时,指"亲戚,亲属"。

The cost of this experiment has no relation to the results.

All of his relations came to spend their holidays at his home.

3.property / properties

property 作集体名词解时,为"(财产的)总称"； 作可数名词解时(通常用其复数形式),为"性能,特性；(舞台上或电影中)表演用的可移动物件"。

The police found some stolen property hidden in the chief's house.

Many plants have medical properties.

4.doubt / doubts

doubt 作抽象名词表示"怀疑"； 作可数名词表示"怀疑的念头,疑虑"。

There is not much doubt about it. Sudden doubts came to his mind.

5.term / terms

term作可数名词解时, 表示"术语；学期"等；复数表示"措辞；条件；关系"等。

Most schools have a fall term and a spring term. I can't accept his terms.

6.compliment / compliments

compliment 作"称赞；尊敬"时, 通常为可数名词(多以单数形式出现)； 作"致意,祝贺"时,用其复数形式。

He paid his boss a high compliment. Give my best compliments to your parents.

7.amusement / amusements

amusement 作"消遣；娱乐"解时,是抽象名词；作"娱乐活动"解时,常用其复数形式。

His favorite amusement is hunting.

There are plenty of amusements in a big city-plays, moving pictures, football matches, and so on.

8.ash / ashes

ash作"灰,灰末"解时,是不可数名词；作"灰烬；废墟 "解时, 多用其复数形式。

Don't drop your cigarette ash on the carpet. A large number of houses were burnt to ashes.

9.attainment / attainments

attainment 作抽象名词时,表示"达到"； 复数形式表示"造诣,学识"。

The right of speaking freely is one of the necessary means to the attainment of the truth.

Once language developed, the possibilities for humankind's future attainments and cultural growth increased.

10.responsibility / responsibilities

responsibility 作抽象名词，表示"责任心"；复数表示"家务事"或对家庭承担的“责任，义务”。

11.resource / resources

resource作可数名词,表示"自然资源；消遣方法"；作不可数名词,表示"智略,机敏,创造精神"。 They were quick to exploit the natural resources of the country.

His resource has saved him from death many times.

12.art / arts

art 作“(一门)手艺, 技能”解时,常用名词单数形式；指大学里开设的文史哲等课程时,却用复数形式arts 或 arts subjects。

She has an art for making people feel at ease. History and literature are among the arts.

13.society / societies

society 作"社会"解时, 是不可数名词；作"社团,团体"解时,是可数名词。

We all have to learn how to behave ourselves in society.

He joined various university societies and clubs.

14.force / forces

force作抽象名词解时,意为"力量,暴力"；作可数名词解时,意为"自然力,势力"。

He didn't use much force. Religion and politics are powerful forces in society.

15.ethic / ethics

ethic以单数形式出现时,表示"伦理学system"；复数表示"道德规范principles"。

the Christian ethic 基督教伦理 The ethics of his decision are doubtful.

16.violation / violations

violation 作抽象名词解时,是"违背,违反"；作可数 名词解时,是"违犯行为"。

He was fined for his violation of the traffic laws. These are gross violations of human rights.

17.business / businesses

business 作不可数名词,表示"买卖；商业"；作可数名词,表示"商业机构,商店"。

We don't do much business with foreign companies.

Many small businesses have gone bankrupt recently.

18.privilege / privileges

privilege 作不可数名词,表示"(有钱有势者的)特权"；作可数名词,表示"特别给予的好处或待遇、优惠"。

The beautiful girl had led a life of luxury and privilege.

What are the privileges that go with the job?

19.loss / losses

loss 作抽象名词表示"丧失,损失"； 作可数名词, 表示"(生意等)亏损的钱"。

The loss of his wife was a great blow to him. Oil suffered losses in the export market.

20.propect/ prospects

propect的单数形式,表示"景色,景象"； 其名词复 数形式,表示"前景,前程,前途"。

The hill commands a fine prospect. In recent years, the prospects of car manufacture are good.

21.production / productions

production 作"生产、制造"解时,是抽象名词；作 "(文艺)作品"解时,是可数名词。

Production is at all times and under all conditions social production.

They saw several National Theatre productions.

22.product / products

product 作"商业产品总称"解时,是不可数名词； 作"某事物的产物"解时,是可数名词。

We should improve the gross national product. They are the products of post-war influence.

23.institution / institutions

institution 作"建立；任命"解时,是不可数名词；作" 慈善机关,福利院；风俗,习惯"解时,是可数名词。

Wise men favor the institution of a savings bank in every big city.

Working houses, homes for poor or orphan children and asylums are institutions.

24.youth / youths

youth 作不可数名词,表示"青少年时期;青春"；作可数名词,表示"青年男子,小伙子"。

Her youth gives her an advantage over the other runners.

As a youth, he showed little promise.