1~30的基数词和序数词英语
基数词（Cardinal Numbers）
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
序数词（Ordinal Numbers）
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. nineteenth
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
基数词用于表示事物的数量，而序数词用于表示顺序或位置
其他小伙伴的相似问题：
1-30基数词和序数词对照表
如何将基数词变为序数词
1-30序数词英文
