【1到100的序数词是什么】在英语中，序数词是用来表示顺序或位置的词，如“第一”、“第二”等。掌握1到100的序数词对于学习英语语法和日常交流非常重要。以下是对1到100的序数词的总结，并附有表格以便查阅。
一、序数词的基本构成规则
1. 1-3：
- 第一（first）
- 第二（second）
- 第三（third）
2. 4-20：
- 从第四（fourth）开始，通常在基数词后加“-th”，但有一些例外：
- 第五（fifth）
- 第六（sixth）
- 第七（seventh）
- 第八（eighth）
- 第九（ninth）
- 第十（tenth）
3. 11-19：
- 除了第十一（eleventh）和第十二（twelfth），其余都以“-th”结尾，如：
- 第十三（thirteenth）
- 第十四（fourteenth）
- 第十五（fifteenth）
- 第十六（sixteenth）
- 第十七（seventeenth）
- 第十八（eighteenth）
- 第十九（nineteenth）
4. 20以上：
- 以“-ty”结尾的基数词，变成序数词时，在“-ty”前加“-i”，然后加“-eth”：
- 第二十（twentieth）
- 第三十（thirtieth）
- 第四十（fortieth）
- 第五十（fiftieth）
- 第六十（sixtieth）
- 第七十（seventieth）
- 第八十（eightieth）
- 第九十（ninetieth）
5. 其他数字：
- 如“21”为“twenty-first”，“32”为“thirty-second”，以此类推。
二、1到100的序数词表
| 序号 | 基数词 | 序数词 |
| 1 | one | first |
| 2 | two | second |
| 3 | three | third |
| 4 | four | fourth |
| 5 | five | fifth |
| 6 | six | sixth |
| 7 | seven | seventh |
| 8 | eight | eighth |
| 9 | nine | ninth |
| 10 | ten | tenth |
| 11 | eleven | eleventh |
| 12 | twelve | twelfth |
| 13 | thirteen | thirteenth |
| 14 | fourteen | fourteenth |
| 15 | fifteen | fifteenth |
| 16 | sixteen | sixteenth |
| 17 | seventeen | seventeenth |
| 18 | eighteen | eighteenth |
| 19 | nineteen | nineteenth |
| 20 | twenty | twentieth |
| 21 | twenty-one | twenty-first |
| 22 | twenty-two | twenty-second |
| 23 | twenty-three | twenty-third |
| 24 | twenty-four | twenty-fourth |
| 25 | twenty-five | twenty-fifth |
| 26 | twenty-six | twenty-sixth |
| 27 | twenty-seven | twenty-seventh |
| 28 | twenty-eight | twenty-eighth |
| 29 | twenty-nine | twenty-ninth |
| 30 | thirty | thirtieth |
| 31 | thirty-one | thirty-first |
| 32 | thirty-two | thirty-second |
| 33 | thirty-three | thirty-third |
| 34 | thirty-four | thirty-fourth |
| 35 | thirty-five | thirty-fifth |
| 36 | thirty-six | thirty-sixth |
| 37 | thirty-seven | thirty-seventh |
| 38 | thirty-eight | thirty-eighth |
| 39 | thirty-nine | thirty-ninth |
| 40 | forty | fortieth |
| 41 | forty-one | forty-first |
| 42 | forty-two | forty-second |
| 43 | forty-three | forty-third |
| 44 | forty-four | forty-fourth |
| 45 | forty-five | forty-fifth |
| 46 | forty-six | forty-sixth |
| 47 | forty-seven | forty-seventh |
| 48 | forty-eight | forty-eighth |
| 49 | forty-nine | forty-ninth |
| 50 | fifty | fiftieth |
| 51 | fifty-one | fifty-first |
| 52 | fifty-two | fifty-second |
| 53 | fifty-three | fifty-third |
| 54 | fifty-four | fifty-fourth |
| 55 | fifty-five | fifty-fifth |
| 56 | fifty-six | fifty-sixth |
| 57 | fifty-seven | fifty-seventh |
| 58 | fifty-eight | fifty-eighth |
| 59 | fifty-nine | fifty-ninth |
| 60 | sixty | sixtieth |
| 61 | sixty-one | sixty-first |
| 62 | sixty-two | sixty-second |
| 63 | sixty-three | sixty-third |
| 64 | sixty-four | sixty-fourth |
| 65 | sixty-five | sixty-fifth |
| 66 | sixty-six | sixty-sixth |
| 67 | sixty-seven | sixty-seventh |
| 68 | sixty-eight | sixty-eighth |
| 69 | sixty-nine | sixty-ninth |
| 70 | seventy | seventieth |
| 71 | seventy-one | seventy-first |
| 72 | seventy-two | seventy-second |
| 73 | seventy-three | seventy-third |
| 74 | seventy-four | seventy-fourth |
| 75 | seventy-five | seventy-fifth |
| 76 | seventy-six | seventy-sixth |
| 77 | seventy-seven | seventy-seventh |
| 78 | seventy-eight | seventy-eighth |
| 79 | seventy-nine | seventy-ninth |
| 80 | eighty | eightieth |
| 81 | eighty-one | eighty-first |
| 82 | eighty-two | eighty-second |
| 83 | eighty-three | eighty-third |
| 84 | eighty-four | eighty-fourth |
| 85 | eighty-five | eighty-fifth |
| 86 | eighty-six | eighty-sixth |
| 87 | eighty-seven | eighty-seventh |
| 88 | eighty-eight | eighty-eighth |
| 89 | eighty-nine | eighty-ninth |
| 90 | ninety | ninetieth |
| 91 | ninety-one | ninety-first |
| 92 | ninety-two | ninety-second |
| 93 | ninety-three | ninety-third |
| 94 | ninety-four | ninety-fourth |
| 95 | ninety-five | ninety-fifth |
| 96 | ninety-six | ninety-sixth |
| 97 | ninety-seven | ninety-seventh |
| 98 | ninety-eight | ninety-eighth |
| 99 | ninety-nine | ninety-ninth |
| 100 | one hundred | one hundredth |
三、小结
掌握1到100的序数词是学习英语语言基础的重要部分。通过了解其构成规律和常见例外，可以更轻松地记忆和使用这些词汇。在实际应用中，序数词常用于表达排名、日期、编号等，因此熟练掌握它们对提升语言能力非常有帮助。