英文中的第21至第29、第31至39、第41至49的缩写和全写及1至49数字英语...答:第31到第39thirty-first thirty-second ,thirty-third.thirty-fourth.fthirty-ifth.thirty-sixth.thirty-seventh .thirty-eighth.thirty-ninth.1到49 。一到十:One, two, three, four, five, six, seven, eight, nine, ten 十一到二十:eleven, twelve, thirteen, fourteen, fifteen, sixteen ...