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数词的种类

类 别例 词
基 数 词one,twenty,hundred,thousand,million,three hundred and
sixty-seven(367)
thirty-seven thousand six hundred and
fifty-five(37,655)
序 数 词first,seventieth,hundredth,fifty-seventh
four thousand six hundred
eighty-eighth
(第4,688)
分 数3/5(three fifths)
5/11(five elevenths)
(two and four ninths)
小 数12.54(twelve point five four)
0.332(zero point three three two)
0.05(zero
point zero five)

基数词和序数词的用法

1. 基数词的用法

(1) 作定语。如:

There are only three boys in the class. 班上只有3名男生。

Ten people will come to the party. 十个人要来参加聚会。

(2) 作主语。如:

It is said that thirteen is an unlucky number. 据说13是个不吉利的数字。

Three of them will play football. 他们中有三人要去踢足球。

(3) 作宾语。如:

It is worth three hundred. 这件东西值300。

The city has a population of three million. 这个城市有三百万人口。

(4) 作表语。如:

I am eighteen. 我18岁。

Two and two is four. 二加二等于四。

(5) 作同位语。如:

Are you two coming? 你们俩来吗?

They ten will go abroad. 他们十个人将出国。

2. 序数词表示法

(1) 有时序数词前面可加不定冠词来表示“再一”,“又一”这样的意思。如:

We'll have to do it again. 我们得重做一次。

Shall I ask him a third time? 还要再问他一次吗?

When Nash sat down, a fourth man rose to speak.

纳什坐下后,第四个人又起来发言。

(2) 序数词的主要作用

作主语。如:

The first day of May is International Labor Day.五月一日是国际劳动节。

作表语。作表语时,序数词前的定冠词往往省去。如:

Lind was second last year. 林德去年是第二。

作宾语。如:

He was among the first to arrive. 他是首批到达的人员之一。

作定语。如:

May is the fifth month of the year. 五月是一年中的第五个月。

作同位语。如:

Who is the woman, the second in the second line? 在第二列第二个的那个妇女是谁?

但要注意:在很多情况下,我们可以用基数词代替序数词来表示顺序。如:

the second part = Part two (第二部分)

the first chapter = Chapter one (第一章)

the fourth section = Section four (第四节)