英語中用來表示事物的數(shù)量或順序的詞叫做數(shù)詞。根據(jù)數(shù)詞的特征，可將數(shù)詞分為基數(shù)詞和序數(shù)詞;根據(jù)數(shù)字是否為整數(shù)，有可將它分為整數(shù)、分數(shù)和小數(shù);根據(jù)數(shù)字所表示的數(shù)是否確定，有可分為定數(shù)和概數(shù)。數(shù)詞在句中可用作主語、表語、賓語、定語、同位語、狀語等。如：

It’s said that 13 is an unlucky number.

據(jù)說13是一個不吉利的數(shù)字。

He was the first man to think of it.

他是第一個想到這一點的人。

The town is 2,000 feet above sea level.

這座城市海拔2,000 英尺。

Who is that man, the first in the front row?

前排第一個是準?

Mrs. Brown was about to begin, but Jennie spoke first.

布朗夫人正要開始講話，珍妮先講了。

I want the third, because the first two look a bit small.

我想要第三個，因為前面兩個看上去小了點。