英语数词写法1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,

one fist
two second
three third
four fourth
fivfe fifth
six sixth
seven seventh
eight eighth
nine nineth
ten tenth
eleven eleventh
twelve twelfth
thirteen thirteenth
fourteen fourteenth
fifteen fifteenth
sixteen sixteenth
seventeen seventeenth
eighteen eighteenth
ninteen ninteenth
twenth twentieth
thirty thirtieth
forty fortieth
fifty fiftieth
sixty sixtieth
seventh seventieth
eighty eightieth
ninety ninetieth

1 one first
2 two second
3 three third
4 four fourth
5 five fifth
6 six sixth
7 seven seventh
8 eight eighth
9 nine ninth
10 ten tenth
11eleven eleventh
12...

one/first,two/second,three/third,four/forth,five/fifth,six/sixth,seven/seventh,eight/eighth,nine/ninth,ten/tenth,eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen ninteen 这些词的序数词就是在此后...

数字 基数词 序数词
1 one first
2 two second
3 three third
4 four forth
5 five fifth
6 six sixth
7 seven seventh
8 eight ...