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英语的基数词1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/09 14:23:12
英语的基数词
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基数词
英语中数词主要分为基数词和序数词两类.
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 21——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 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涌博物馆.
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.
(8).基数词的句法功能
基数词在句中可作主语、宾语、定语、表语、同位语.
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)
这是一些基数词的写法:
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
32 thirty-two
40 forty
50 fifty
60 sixty
70 seventy
80 eighty
90 ninety