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
扩展资料
序数词变化规律：
1、序数词1-19除第一, 第二, 第三, 第五, 第八, 第九, 第十二变化不规则外, 其余均由在基数词后加上 -th。
2、几十几的序数词,只是把个位数变成序数词， 十位数不变。
序数词有缩写形式，也要记住： first（第一）缩写为1st, second (第二)缩写为2nd， third（第三）缩写为 3rd，其他数序词是以-th结尾的，如： fourth（第四） 缩写为4th。
第二十至第九十九的序数词：
20 – 90整十位数序数词 – 将对应的基数词词尾中的y变为i，然后加eth构成。
21–99非整十位数位序数词 – 十位数仍有基数词，个位数则用相应的序数词。十位数和个位数之间用连字符“-”连接。
百位以上的序数词：
将基数词的结尾部分变为序数词即可。
第一百one hundredth；100th
第二百零四two hundred and fourth；204th
在英语中，使用序数词时前面要加定冠词 the，但是，在下面的情况下则不加 the：
1．当序数词前有形容词性物主代词或名词所有格修饰时，序数词前不用 the。
Mother was my first teacher in my life.妈妈是我生命中的第一个老师。
Tom is Lily's third boyfriend. 汤姆是莉莉的第三个男朋友。
2．当表达分数时，序数词前不用 the。
One fifth of the students here are from the country. 这儿1/5的学生来自农村。
Three fourths of the students here are from the country. 这儿的3/4的学生来自农村。
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本回答被网友采纳
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
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