【1到100的英语单词序数词怎么写】在学习英语的过程中，掌握序数词（ordinal numbers）是非常重要的。序数词用于表示顺序、排名或位置，如“第一”、“第二”等。本文将总结从1到100的英语序数词，并以表格形式展示，方便查阅和记忆。
一、序数词的基本规则
1. 一般情况下，序数词是在基数词后加 -th。
- 例如：four → fourth, five → fifth
2. 特殊情况：
- one → first
- two → second
- three → third
- five → fifth
- twelve → twelfth
3. 以y结尾的数字，通常将 y 改为 i，再加 -eth。
- 例如：twenty → twentieth, thirty → thirtieth
4. 其他特殊变化：
- eight → eighth
- nine → ninth
- twelve → twelfth
二、1到100的英语序数词表
| 序号 | 英文基数词 | 英文序数词 |
| 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、使用建议
- 在正式写作中，序数词通常用 阿拉伯数字 + 小写英文字母 表示，如：1st, 2nd, 3rd, 4th...
- 在口语中，也可以直接说 first, second, third...
- 注意某些数字的拼写容易混淆，如 fifteenth 和 fifteenth，需仔细区分。
通过以上整理，你可以更清晰地了解1到100的英语序数词写法。建议多加练习，结合实际语境使用，有助于更好地掌握这些词汇。