
公考顾老师为您分享以下优质知识
以下是英语序数词的记忆口诀及表格帮助您快速掌握基数词变序数词的规则:
特殊变形:一、二、三单独记(first, second, third)
常规变形:4-19加-th(如fourth, fifth),注意例外:
五(five→fifth)、十二(twelve→twelfth)需将ve变f再加th
八(eight→eighth)去t,九(nine→ninth)去e
整十数:20-90变y为ie再加-th(如twenty→twentieth)
复合数字:几十几仅变个位(如twenty-one→twenty-first)
基数词 | 序数词 | 缩写 | 规则说明 |
---|---|---|---|
one | first | 1st | 特殊变形 |
two | second | 2nd | 特殊变形 |
three | third | 3rd | 特殊变形 |
four | fourth | 4th | 直接加th |
five | fifth | 5th | ve→f+th |
eight | eighth | 8th | 去t加th |
nine | ninth | 9th | 去e加th |
twelve | twelfth | 12th | ve→f+th |
twenty | twentieth | 20th | y→ie+th |
twenty-one | twenty-first | 21st | 仅变个位 |
拼写陷阱:
five→fifth(非fiveth)
forty→fortieth(注意无u)
缩写形式:1st/2nd/3rd特殊,其余加th(如4th, 11th)
日期:May 1st(序数词前无the)
楼层:the fifth floor(需加the)
通过口诀和表格结合记忆,能更高效掌握序数词变形规则。如需完整列表或更多示例,可参考或。