序數 分數

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
fourteenth 14th
fifteenth  15th
sixteenth   16th
seventeenth  17th
eighteenth 18th
nineteenth   19th
twentieth  20th

twenty first  21st
twenty second  22nd
twenty third   23rd
twenty fourth 24th
one thousand and twenty first   1021st
one thousand and twenty five   1025th

序號一般來說只有1,2,3是不規則，其餘都是一般數字加上th

分數表示

1/2  (one-half) (one 與half間的橫槓可不加~ one half 亦可)

1/3  (one-third)

1/4  (one-fourth)

若分子為2以上. 分母則用序數的複數形(一般加s)

2/3  (two-thirds)

3/4  (three-fourths)

5/8  (five-eighths)

3/2  (three-halves)

3 2/5 (three and two-fifths)


1 2/7 裡的整數1 可唸"one and two-sevenths"
也可唸成"a whole and two-sevenths"

分子與分母間的橫槓. 一般在英文裡都不說.

但也聽過有外國人唸 "over". 尤其是數字較大的.

258 / 374 (two hundred and fifty eight
over  three hundred and seventy fourths)