“nine”的中文意思是数字9,表示一个数量单位。
ninetieth的中文是“第九十”。
在英语中,数字的表达方式有很多种,其中一种是将数字与基数词结合使用,基数词表示数量,而序数词则表示顺序,ninetieth是一个序数词,表示第九十的意思。
序数词的构成规则如下:
1、一般情况下,序数词的构成是在相应的基数词后面加上后缀-th,twenty(二十)变成twentieth(第二十)。
2、如果基数词以-y结尾,且-y前面的字母不是辅音字母,那么需要将-y改为-i,再加上后缀-eth,twenty(二十)变成twentieth(第二十)。
3、如果基数词以-e结尾,那么只需要加上后缀-th,ten(十)变成tenth(第十)。
4、对于以-ve结尾的基数词,需要将-ve改为-f,再加上后缀-th,fifteen(十五)变成fifteenth(第十五)。
5、对于以辅音字母+y结尾的基数词,需要将y变为i,再加上后缀-eth,twenty(二十)变成twentieth(第二十)。
6、对于以-th结尾的基数词,需要去掉-th,再加上后缀-ieth,forty(四十)变成fortieth(第四十)。
7、对于一些特殊的序数词,需要单独记忆,first(第一),second(第二),third(第三),fourth(第四),fifth(第五),sixth(第六),seventh(第七),eighth(第八),ninth(第九),tenth(第十),eleventh(第十一),twelfth(第十二),thirteenth(第十三),fourteenth(第十四),fifteenth(第十五),sixteenth(第十六),seventeenth(第十七),eighteenth(第十八),nineteenth(第十九),twentieth(第二十)。
下面是一些常见的序数词及其对应的基数词:
序数词 | 基数词 |
first | one |
second | two |
third | three |
fourth | four |
fifth | five |
sixth | six |
seventh | seven |
eighth | eight |
ninth | nine |
tenth | ten |
eleventh | eleven |
twelfth | twelve |
thirteenth | thirteen |
fourteenth | fourteen |
fifteenth | fifteen |
sixteenth | sixteen |
seventeenth | seventeen |
eighteenth | eighteen |
nineteenth | nineteen |
twentieth | twenty |
twenty-first | twenty-one |
twenty-second | twenty-two |
twenty-third | twenty-three |
twenty-fourth | twenty-four |
twenty-fifth | twenty-five |
twenty-sixth | twenty-six |
twenty-seventh | twenty-seven |
twenty-eighth | twenty-eight |
twenty-ninth | twenty-nine |
thirtieth | thirty |
thirty-first | thirty-one |
thirty-second | thirty-two |
thirty-third | thirty-three |
thirty-fourth | thirty-four |
thirty-fifth | thirty-five |
thirty-sixth | thirty-six |
thirty-seventh | thirty-seven |
thirty-eighth | thirty-eight |
thirty-ninth | thirty-nine |
fortieth | forty |
forty-first | forty-one |
forty-second | forty-two |
forty-third | forty-three |
forty-fourth | forty-four |
forty-fifth | forty-five |
forty-sixth | forty-six |
forty-seventh | forty-seven |
forty-eighth | forty-eight |
forty-ninth | forty-nine |
fiftieth | fifty |
fifty-first | fifty-one |
fifty-second | fifty-two |
fifty-third | fifty-three |
fifty-fourth | fifty-four |
fifty-fifth | fifty-five |
fifty-sixth | fifty-six |
fifty-seventh | fifty-seven |
fifty-eighth | fifty-eight |
fifty-ninth | fifty-nine |
sixtieth | sixty |
sixty-first | sixty-one |
sixty-second | sixty-two |
sixty-third | sixty-three |
sixty-fourth | sixty-four |
sixty-fifth | sixty-five |
sixty-sixth | sixty-six |
sixty-seventh | sixty-seven |
sixty-eighth | sixty-eight |
| sixty-ninth
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