9. 序数词1到20英文怎么写 1 one2 two3 three4 four5 five6 six7 seven8 eight9 nine10 ten11 eleven12 twelve13 thirteen14 fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20 twenty
到20的英语序数词
1）序数词第一至第二十的数字为：
first (1st)
second (2nd)
third (3rd)
fourth (4th)
fifth (5th)
sixth (6th)
seventh (7th)
eighth (8th)
ninth (9th)
tenth (10th)
eleventh (11th)
twelfth(12th)
thirteenth (13th)
fourteen (14th)
fifteenth (15th)
sixteenth (16th) seventeen (17th)
eighteenth (18th)
nineteenth (19th)
twentieth (20th)
注：英语序数词第1-19除了e69da5e887aa3231313335323631343130323136353331333433633364first、second、third 有特殊形式外 ， 其余均由基数词加后缀-th 构成 。