在学习英语的过程中，序数词是一个重要的知识点。序数词用来表示事物的顺序，例如第一、第二、第三等。当我们需要表达某个事物是第几个时，就需要使用序数词。今天，我们就来详细列出从1到100的所有序数词原形，帮助大家更好地理解和记忆。

序数词的构成有一定的规则，但也有一些特殊情况需要注意。一般来说，序数词是在基数词后面加上后缀“-st”、“-nd”、“-rd”或“-th”。例如，“one”的序数词是“first”，“two”的序数词是“second”，“three”的序数词是“third”。而大多数数字的序数词则以“-th”结尾，比如“four”变成“fourth”。

以下是1到100的序数词原形列表：

1st - first

2nd - second

3rd - third

4th - fourth

5th - fifth

6th - sixth

7th - seventh

8th - eighth

9th - ninth

10th - tenth

11th - eleventh

12th - twelfth

13th - thirteenth

14th - fourteenth

15th - fifteenth

16th - sixteenth

17th - seventeenth

18th - eighteenth

19th - nineteenth

20th - twentieth

21st - twenty-first

22nd - twenty-second

23rd - twenty-third

24th - twenty-fourth

25th - twenty-fifth

26th - twenty-sixth

27th - twenty-seventh

28th - twenty-eighth

29th - twenty-ninth

30th - thirtieth

31st - thirty-first

32nd - thirty-second

33rd - thirty-third

34th - thirty-fourth

35th - thirty-fifth

36th - thirty-sixth

37th - thirty-seventh

38th - thirty-eighth

39th - thirty-ninth

40th - fortieth

41st - forty-first

42nd - forty-second

43rd - forty-third

44th - forty-fourth

45th - forty-fifth

46th - forty-sixth

47th - forty-seventh

48th - forty-eighth

49th - forty-ninth

50th - fiftieth

51st - fifty-first

52nd - fifty-second

53rd - fifty-third

54th - fifty-fourth

55th - fifty-fifth

56th - fifty-sixth

57th - fifty-seventh

58th - fifty-eighth

59th - fifty-ninth

60th - sixtieth

61st - sixty-first

62nd - sixty-second

63rd - sixty-third

64th - sixty-fourth

65th - sixty-fifth

66th - sixty-sixth

67th - sixty-seventh

68th - sixty-eighth

69th - sixty-ninth

70th - seventieth

71st - seventy-first

72nd - seventy-second

73rd - seventy-third

74th - seventy-fourth

75th - seventy-fifth

76th - seventy-sixth

77th - seventy-seventh

78th - seventy-eighth

79th - seventy-ninth

80th - eightieth

81st - eighty-first

82nd - eighty-second

83rd - eighty-third

84th - eighty-fourth

85th - eighty-fifth

86th - eighty-sixth

87th - eighty-seventh

88th - eighty-eighth

89th - eighty-ninth

90th - ninetieth

91st - ninety-first

92nd - ninety-second

93rd - ninety-third

94th - ninety-fourth

95th - ninety-fifth

96th - ninety-sixth

97th - ninety-seventh

98th - ninety-eighth

99th - ninety-ninth

100th - one hundredth

通过以上表格，我们可以清晰地看到每个数字对应的序数词形式。记住这些序数词对于写作、口语以及日常交流都非常有帮助。此外，在实际应用中，序数词常用于描述日期、排名、楼层等场景。例如，“I live on the 15th floor”（我住在15楼），“Today is the 20th of December”（今天是12月20日）。

希望大家通过这篇文章能够熟练掌握1到100的序数词原形，并在今后的学习和生活中灵活运用它们！