【1到100序数词】在英语中，序数词用于表示顺序或排名，如“第一”、“第二”等。掌握1到100的序数词对于学习英语的人来说是非常基础且重要的内容。以下是对1到100序数词的总结，并附有表格形式的展示，方便查阅和记忆。
一、序数词的基本构成规则
1. 数字1-3：
- 1 → first
- 2 → second
- 3 → third
2. 数字4-20：
- 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
3. 数字21-99：
- 21 → twenty-first
- 22 → twenty-second
- 23 → twenty-third
- ...
- 30 → thirty-third（注意：这里不是thirty-thirteenth）
- 31 → thirty-first
- 40 → fortieth
- 50 → fiftieth
- 60 → sixtieth
- 70 → seventieth
- 80 → eightieth
- 90 → ninetieth
4. 数字100：
- 100 → one hundredth
二、常见错误与注意事项
- 特殊变化：像“first”、“second”、“third”这样的序数词没有固定的规则，需要单独记忆。
- 连字符使用：当数字超过20时，如“twenty-first”，应使用连字符连接。
- 复数形式：在某些情况下，如“the first three people”，可以使用复数形式，但序数词本身不变。
- 缩写形式：有时会用“1st”、“2nd”、“3rd”等来表示序数词，尤其在非正式场合中。
三、1到100序数词表
| 数字 | 序数词 | 数字 | 序数词 | 数字 | 序数词 |
| 1 | first | 34 | thirty-fourth | 67 | sixty-seventh |
| 2 | second | 35 | thirty-fifth | 68 | sixty-eighth |
| 3 | third | 36 | thirty-sixth | 69 | sixty-ninth |
| 4 | fourth | 37 | thirty-seventh | 70 | seventieth |
| 5 | fifth | 38 | thirty-eighth | 71 | seventy-first |
| 6 | sixth | 39 | thirty-ninth | 72 | seventy-second |
| 7 | seventh | 40 | fortieth | 73 | seventy-third |
| 8 | eighth | 41 | forty-first | 74 | seventy-fourth |
| 9 | ninth | 42 | forty-second | 75 | seventy-fifth |
| 10 | tenth | 43 | forty-third | 76 | seventy-sixth |
| 11 | eleventh | 44 | forty-fourth | 77 | seventy-seventh |
| 12 | twelfth | 45 | forty-fifth | 78 | seventy-eighth |
| 13 | thirteenth | 46 | forty-sixth | 79 | seventy-ninth |
| 14 | fourteenth | 47 | forty-seventh | 80 | eightieth |
| 15 | fifteenth | 48 | forty-eighth | 81 | eighty-first |
| 16 | sixteenth | 49 | forty-ninth | 82 | eighty-second |
| 17 | seventeenth | 50 | fiftieth | 83 | eighty-third |
| 18 | eighteenth | 51 | fifty-first | 84 | eighty-fourth |
| 19 | nineteenth | 52 | fifty-second | 85 | eighty-fifth |
| 20 | twentieth | 53 | fifty-third | 86 | eighty-sixth |
| 21 | twenty-first | 54 | fifty-fourth | 87 | eighty-seventh |
| 22 | twenty-second | 55 | fifty-fifth | 88 | eighty-eighth |
| 23 | twenty-third | 56 | fifty-sixth | 89 | eighty-ninth |
| 24 | twenty-fourth | 57 | fifty-seventh | 90 | ninetieth |
| 25 | twenty-fifth | 58 | fifty-eighth | 91 | ninety-first |
| 26 | twenty-sixth | 59 | fifty-ninth | 92 | ninety-second |
| 27 | twenty-seventh | 60 | sixtieth | 93 | ninety-third |
| 28 | twenty-eighth | 61 | sixty-first | 94 | ninety-fourth |
| 29 | twenty-ninth | 62 | sixty-second | 95 | ninety-fifth |
| 30 | thirtieth | 63 | sixty-third | 96 | ninety-sixth |
| 31 | thirty-first | 64 | sixty-fourth | 97 | ninety-seventh |
| 32 | thirty-second | 65 | sixty-fifth | 98 | ninety-eighth |
| 33 | thirty-third | 66 | sixty-sixth | 99 | ninety-ninth |
| 100 | one hundredth | 100 | one hundredth |
四、小结
掌握1到100的序数词是英语学习中的基本功之一，尤其在写作、口语表达以及阅读中都非常重要。通过理解其构成规则并结合表格进行记忆，可以更高效地掌握这些词汇。同时，注意常见的拼写错误和使用习惯，有助于提高语言准确性。
