怎样区别英文的第一第二第三第四？
first 1st 1 one second 2nd 2 two
third 3rd 3 three fourth 4th . 4 four
fifth 5th 5 five sixth 6th 6 six
seventh 7th 7 seven eighth 8th 8 eight
ninth 9th 9 nine tenth 10th 10 ten
eleventh 11th 11 eleven twelfth 12th 12 twelve
thirteenth 13th 13 thirteen fourteenth 14th 14 fourteen
fifteenth 15th 15 fifteen sixteenth 16th 16 sixteen
seventeenth 17th 17 seventeen eighteenth 18th 18 eighteen
nineteenth 19th 19 nineteen twentieth 20th 20 twenty
twenty-first 21st 21 twenty-one twenty-second 22nd 22 twenty-two
twenty-third 23nd 23 twenty-three twenty-fourth 24th 24 twenty-four
twenty-fifth 25th 25 twenty-five
以此类推：
thirtieth 30th 30 thirty fortieth 40th 40 forty
fiftieth 50 fifty sixtieth 60 sixty
seventieth 70 seventy eightieth 80 eighty
ninetieth 90 ninety one hundredth 100th 100 hundre
