基數詞(表示數量多少的詞，大致相當於代數裏的自然數)
zero,one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen,
sixteen,seventeen,eighteen,nineteen,twenty,twenty-one,twenty-two,twenty-three,twenty-four,
twenty-five,twenty-six,twenty-seven,twenty-eight,twenty-nine,thirty,forty,fifty,sixty,
seventy,eighty,ninety,onehundred,onehundredandone。
