《初级英语 语法易过关》词法篇 Lesson 10 数词（PDF版学案）

esson 10
数词
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爷爷，数词是表示数日多少的词吗？
数词不仅能表示数目，还能表示顺序皱！
耶教词是不是也有分类呢？
当然！根据表示意义的不同，数词可以分为基数词和序数词。
基数词
基数词是描述事物数量多少的词。
1.基数词的构成
(1)基数词1~12，拼写形式各不同
1
2
3
4
5
6
one
two
three
four
five
six
7
8
9
10
11
12
seven
eight
nine
ten
eleven
twelve
(2)基数词13~19，词尾加-teen(13,15和18拼写较特殊)
13
14
15
16
17
18
19
thirteen
fourteen
fifteen
sixteen
seventeen eighteen
nineteen
(3)基数词2099
①整十数基数词词尾加-ty(20,30,40,50和80拼写较特殊)
20
30
40
50
60
70
80
90
twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety
②非整十数基数词由“整十数基数词+个位数基数词”构成，中间用“”
连接
21
32
43
54
65
twenty-one
thirty-two
forty-three
fifty-four
sixty-five
54
76
86
97
98
99
seventy-six
eighty-six
ninety-seven
ninety-eight
ninety-nine
(4)基数词100~999
①整百数基数词由“个位数基数词+hundred”构成
100
200
300
one hundred
two hundred
three hundred
400
500
600
four hundred
five hundred
six hundred
700
800
900
seven hundred
eight hundred
nine hundred
②非整百数基数词由“整百数基数词+整十数基数词+个位数基数词”构
成，百位数和十位数之间用and连接，十位数和个位数之间用“.”连接
101
111
one hundred and one
one hundred and eleven
220
656
two hundred and twenty
six hundred and fifty-six
781
999
seven hundred and eighty-one
nine hundred and ninety-nine
(5)基数词1000及以上，先将数字从右往左数，每三位数用“，”隔开。从
右往左第一个逗号表示“千”读作thousand:第二个逗号表示“百万”
读作mil训ion:第三个逗号表示“十亿”读作bil训ion
1000(一千)
10,000(一万)
100,000(十万)
one thousand
ten thousand
one hundred thousand
1,000,000(一百万)
10,000,000(一千万)
100,000,000(-亿)
one million
ten million
one hundred million
1,000,000.000(十亿)
one billion
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