基数词

更新时间:2024-03-04 10:04

基数词,外文名cardinal number,是指描述事物数量的多少的数词。英语中数词主要分为基数词和序数词两类。所谓基数,在数学上的理解是可以比较大小的数。英语中的基数词是用于描述事物数量的多少

口诀

基数词记忆口诀:

基数词,很容易,

0至12,词各异。

13,19,teen结尾。

整十后,有ty。

几十几,也容易:

先说几十,再说几。

中间短杠“-”加上去。

hundred,是一百,

百内数字记心怀。

几百几,挺容易:

先说几百,再说几。

中间and加上去。

thousand,是一千,

千内数字记心间。

形式

基数词 : 表示数目的词称为基数词。其形式如下:

(1).从1——10 one,two,three,four,five,six,seven,eight,nine,ten.

(2).从 11——19 eleven,twelve, thirteen, fourteen, fifteen, sixteen, seventeen,eighteen, nineteen.

这里除 eleven, twelve, thirteen, fifteen, eighteen为特殊形式外,fourteen,sixteen,seventeen,nineteen都是由其个位数形式后添加后缀-teen构成。

(3).从 20——99 整数几十中除twenty,thirty, forty,fifty,eighty为特殊形式外,sixty,seventy,ninety都是其个位数形式后添加后缀-ty构成。表示几十几时,在几十和个位基数词形式之间添加连字符“-” 21 twenty-one 76 seventy-six

(4).百位数个数基数词形式加“hundred”,表示几百,在几十几与百位间加上and.

101 a hundred and one 320 three hundred and twenty 648 six hundred and forty-eight

(5).千位数以上 从数字的右端向左端数起,每三位数加一个逗号“,”。从右开始,第一个“,”前的数字后添加 thousand,第二个“,”前面的数字后添加 million,第三个“,”前的数字后添加 billion。然后一节一节分别表示,两个逗号之间最大的数为百位数形式。

2,648 two thousand six hundred and forty-eight

16,250,064 sixteen million two hundred and fifty thousand and sixty-four

5,237,166,234 five billion,two hundred and thirty-seven million,one hundred and sixty-six thousand,two hundred and thirty-four

(6).基数词在表示确切的数字时,不能使用百、千、百万、十亿的复数形式;但是,当基数词表示不确切数字,如成百、成千上万,三三两两时,基数词则以复数形式出现。

There are hundreds of people in the hall. 大厅里有数以百计的人。

Thousands and thousands of people come to visit the Museum of Qin Terra-Cotta Warriors and Horses every day. 每天有成千上万的人来参观秦兵马俑博物馆。

复数形式

有时两个复数形式的基数词连用可写为: hundreds of thousands of , tens of hundreds of 等等。

They went to the theatre in twos and threes. 他们三三两两地来到了剧院。

(7).表示人的不确切岁数或年代,用几十的复数形式表示。

He became a professor in his thirties. 他三十多岁时成为了教授。

She died of lung cancer in forties. 她四十来岁时死于肺癌

It was in the 1960s. 那是在二十世纪六十年代。

句法功能

基数词在句中可作主语、宾语、定语、表语同位语

基数词主要表示事物或人物的个数。

The two happily opened the box. 两个人高兴地打开了盒子。(作主语)

I need three altogether. 我总共需要三个。(作宾语)

Four students are playing volleyball outside. 四个学生在外面打排球。(作定语)

We are sixteen. 我们是16个人。(作表语)

They three tried to finish the task before sunset. 他们三个人尽力想在日落前完成任务。(作同位语)

写法

0 nought;zero;O

1 one

2 two

3 three

4 four

5 five

6 six

7 seven

8 eight

9 nine

10 ten

11 eleven

12 twelve

13 thirteen

14 fourteen

15 fifteen

16 sixteen

17 seventeen

18 eighteen

19 nineteen

20 twenty

21 twenty-one

22 twenty-two

23 twenty-three

30 thirty

40 forty

50 fifty

60 sixty

70 seventy

80 eighty

90 ninety

100 one hundred

101 one hundred and one

156 one hundred and fifty-six

192 one hundred and ninety-two

200 two hundred

300 three hundred

400 four hundred

500 five hundred

600 six hundred

700 seven hundred

800 eight hundred

900 nine hundred

1,000 one thousand

1,001 one thousand and one

1,300 thirteen hundred;one thousand and three hundred

2,000 two thousand

2,034 two thousand and thirty-four

6,502 six thousand five hundred and two

38,000 thirty-eight thousand

45,672 forty-five thousand six hundred and seventy-two

500,000 five hundred thousand

1,000,000 one million

3,123,400 three million,one hundred and twenty-three thousand four hundred

8,000,000 eight million

47,000,000 forty-seven million

900,000,000 nine hundred million

1,000,000,000 a milliard,one milliard(美作:a billion,one billion)

1,050,000,000 one billion and fifty million

10,000,000,000 ten billion

200,000,000,000 two hundred billion

1,000,000,000,000 a trillion,one trillion

6,000,000,000,000six trillion

(9). 表示分数时分子用基数词,分母序数词

1/3 one-third(三分之一) , 3/4 three-fourths(四分之三) , 3/37 three and thirty-sevenths(三十七分之三)

:one(一),two(二),ten(十),twenty(二十),one hundred(一百),two thousand(两千),ten million(一千万),three billion(三十亿)等

总而言之,多数位的基数词写法为:几十几用“-”连接,有专有单位数与无专有单位数有“and”连接,间零可用“and”连接。

例句

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