一到十二的序数词英文单词 one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve. First, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh and twelfth are the ordinal numbers from one to twelve, respectively. One is an ordinal number that signifies the first position in an ordered sequence of numbers. Two is an ordinal number that signifies the second position in an ordered sequence of numbers. Three is an ordinal number that signifies the third position in an ordered sequence of numbers. Four is an ordinal number that signifies the fourth position in an ordered sequence of numbers. Five is an ordinal number that signifies the fifth position in an ordered sequence of numbers. Six is an ordinal number that signifies the sixth position in an ordered sequence of numbers. Seven is an ordinal number that signifies the seventh position in an ordered sequence of numbers. Eight is an ordinal number that signifies the eighth position in an ordered sequence of numbers. Nine is an ordinal number that signifies the ninth position in an ordered sequence of numbers. Ten is an ordinal number that signifies the tenth position in an ordered sequence of numbers. Eleven is an ordinal number that signifies the eleventh position in an ordered sequence of numbers. Finally, twelve is an ordinal number that signifies the twelfth position in an ordered sequence of numbers. Ordinal numbers are written in words as first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh and twelfth. To express the position in a sequence of numbers, ordinal numbers are written using hyphens. For example, the eleventh position in a sequence can be expressed as eleventh or written as 11th. Ordinal numbers are widely used in different fields, such as mathematics, language, philosophy, and science. In mathematics, ordinal numbers are used in counting and determining the cardinal numbers in a set. In language, ordinal numbers are used in expressing words in its position in an ordered sequence, such as grammar rules, or its order in a sequence of words like pronouns. In philosophy, ordinal numbers are used in determining the position of an entity in a philosophical sequence of events. In science, ordinal numbers are used in determining the position of an element in a periodic table. 本文来源：https://www.wddqw.com/doc/b96204ac740bf78a6529647d27284b73f24236cc.html