英语基数词1~21单词,序数词21单词11点前搞定顺便把序数词写下,给红旗哦

irst second third fourth fifth sixth seventh eighth nineth tenth eleventh twelveth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth ninteenth twentyth twenty-first

one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen ninteen twenty twenty-one
first second third fourth fifth 其余的都加th twenty-first

one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen ninteen twenty twenty-one first second third fourth fifth sixth seventh eighth ninet...