英语数字与序数词

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
24 twenty- four
25 twenty- five
26 twenty- six
27 twenty- seven
28 twenty- eight
29 twenty- nine
30 thirty
31 thirty- one
32 thirty- two
33 thirty- three
34 thirty- four
35 thirty- five
36 thirty- six
37 thirty- seven
38 thirty- eight
39 thirty- nine
40 forty
41 forty- one
42 forty- two
43 forty- three
44 forty- four
45 forty- five
46 forty- six
47 forty- seven
48 forty- eight
49 forty- nine
50 fifty
51 fifty- one
52 fifty- two
53 fifty- three
54 fifty- four
55 fifty- five
56 fifty- six
57 fifty- seven
58 fifty- eight
59 fifty- nine
60 sixty
61 sixty- one
62 sixty- two
63 sixty- three
64 sixty- four
65 sixty- five
66 sixty- six
67 sixty- seven
68 sixty- eight
69 sixty- nine
70 seventy
71 seventy- one
72 seventy- two
73 seventy- three
74 seventy- four
75 seventy- five
76 seventy- six
77 seventy- seven
78 seventy- eight
79 seventy- nine
80 eighty
81 eighty- one
82 eighty- two
83 eighty- three
84 eighty- four
85 eighty- five
86 eighty- six
87 eighty- seven
88 eighty- eight
89 eighty- nine
90 ninety
91 ninety-one
92 ninety- two
93 ninety- three
94 ninety- four
95 ninety- five
96 ninety- six
97 ninety- seven
98 ninety- eight
99 ninety- nine
100 hundred



1－100的序数词分为四个类。

1、第一类
first (1st) 第一
second (2nd) 第二
third (3rd) 第三
（在括号里的是缩写形式，均在阿拉伯数字后面加上相应序数词的最后两个字母构成，以下各类与此相同。）这类序数词只有三个，在整个序数词里面是特殊的，就和第一类基数词一样，需要逐个地硬记下来。

2、第二类：
fourth (4th) 第四
fifth (5th) 第五
sixth (6th) 第六
seventh (7th) 第七
eighth (8th) 第八
ninth (9th) 第九
tenth (10th) 第十
eleventh (11th) 第十一
twelfth (12th) 第十二
thirteenth (13th) 第十三
fourteenth (14th) 第十四
fifteenth (15th) 第十五
sixteenth (16th) 第十六
seventeenth (17th) 第十七
eighteenth (18th) 第十八
nineteenth (19th) 第十九
这一类序数词共有十六个。均在相应的基数词后面加上后缀－th构成。要注意其中fifth、eighth、ninth、twelth四个词的拼法。

3、第三类：
twentieth (20th) 第二十
thirtieth (30th) 第三十
fortieth (40th) 第四十
fiftieth (50th) 第五十
sixtieth (60th) 第六十
seventieth (70th) 第七十
eightieth (80th) 第八十
ninetieth (90th) 第九十
这一类全是十位整数的序数词，共八个。它们的构成方法是：先将相应的十位整数的基数词词尾－ty中的y改成i，

然后在加上后缀－eth。

4、第四类：
thirty-first (31th) 第三十一
sixty-second (62nd) 第六十二
eighty-seventh (87th) 第八十七
ninety-eighth (98th) 第九十八
这类表示“第几十几”的序数词，跟表示“几十几”的基数词一样简单。在构成方法上均由基数词“几十几”变化而来，十位数不变，仅把个位上的基数词变成序数词就行了。

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具体如下：

1=First
2=Second
3=Third
4=Fourth
5=Fifth
6=Sixth
7=Seventh
8=Eighth
9=Ninth
10=Tenth
11=Eleventh
12=Twelfth
13=Thirteenth
14=Fourteenth
15=Fifteenth
16=Sixteenth
17=Seventeenth
18=Eighteenth
19=Nighteenth
20=Twentieth
21=Twenty-first
22=Twenty-second
23=Twenty-third
24=Twenty-fourth
25=Twenty-fifth
26=Twenty-sixth
27=Twenty-seventh
28=Twenty-eighth
29=Twenty-ninth
30=Thirtieth
31=Thirty-first
32=Thirty-second
33=Thirty-third
34=Thirty-fourth
35=Thirty-fifth
36=Thirty-sixth
37=Thirty-seventh
38=Thirty-eighth
39=Thirty-ninth
40=Fortieth
41=Forty-first
42=Forty-second
43=Forty-third
44=Forty-fourth
45=Forty-fifth
46=Forty-sixth
47=Forty-seventh
48=Forty-eighth
49=Forty-ninth
50=Fiftieth
51=Fifty-first
52=Fifty-second
53=Fifty-third
54=Fifty-fourth
55=Fifty-fifth
56=Fifty-sixth
57=Fifty-seventh
58=Fifty-eighth
59=Fifty-ninth
60=Sixtieth
61=Sixty-first
62=Sixty-second
63=Sixty-third
64=Sixty-fourth
65=Sixty-fifth
66=Sixty-sixth
67=Sixty-seventh
68=Sixty-eighth
69=Sixty-ninth
70=Seventieth
71=Seventy-first
72=Seventy-second
73=Seventy-third
74=Seventy-fourth
75=Seventy-fifth
76=Seventy-sixth
77=Seventy-seventh
78=Seventy-eighth
79=Seventy-ninth
80=Eightieth
81=Eighty-first
82=Eighty-second
83=Eighty-third
84=Eighty-fourth
85=Eighty-fifth
86=Eighty-sixth
87=Eighty-seventh
88=Eighty-eighth
89=Eighty-ninth
90=Ninetieth
91=Ninety-first
92=Ninety-second
93=Ninety-third
94=Ninety-fourth
95=Ninety-fifth
96=Ninety-sixth
97=Ninety-seventh
98=Ninety-eighth
99=Ninety-ninth