大懒猪001
1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th,18th, 19th, 20th, 21st, 22nd, 23rd, 24th, 25th, 26th, 27th, 28th, 29th, 30th. 20以后就是拿20的加上第1到第9 就是twenty-first ,后面到29以此类推 31为thirty-first ,直到39以此类推 41为 forty-first ,后面同上 50为fiftieth;第1、2、3是例外,第1-1st 第2-2nd 第3-3rd 第四以后都是数字加th,比如4th,5th,但从20以后如果遇到个位数为1、2、3的还得按照1st、2nd和3rd来写,比如第32为32nd。
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