十一到二十：eleven, twelve, thirteen, fourteen, fifteen, sixteen seventeen eighteen nineteen twenty
二十一到三十：twenty-one twenty-two twenty-three twenty-four twenty-five twenty-six twenty-seven twenty-eight twenty-nine thirty
三十一到四十： thirty-one thirty-two thirty-three thirty-four thirty-five thirty-six thirty-seven thirty-eight thirty-nine forty
四十一到五十： forty-one forty-two forty-three forty-four forty-five forty-six forty-seven forty-eight forty-nine fifty
五十一到六十：fifty-one fifty-two fifty-three fifty-four fifty-five fifty-six fifty-seven fifty-eight fifty-nine sixty
六十一到七十： sixty-one sixty-two sixty-three sixty-four sixty-five sixty-six sixty-seven sixty-eight sixty-nine seventy
七十一到八十：seventy-one seventy-two seventy-three seventy-four seventy-five seventy-six seventy-seven seventy-eight seventy-nine eighty
八十一到九十：eighty-one eighty-two eighty-three eighty-four eighty-five eighty-six eighty-seven eighty-eight eighty-nine ninety ninety-one
十一到十九都是以teen结尾的。其他都是以ty结尾。
