1.分数的形式
（1）分子用基数词，分母用序数词；分子大于一时分母用复数。
1/4 a/one fourth 1/6 a/one sixth
2/3 two thirds 3/5 three fifths
4/5 four fifths 3/7 three sevenths
four and three fifths 2 two and three fourths
（2）特殊分数形式
1/2 a/one half 1/4 a/one quarter
3/4 three quarters 1/5 one in five
3/5 three out of five
2.百分数和小数
（1）百分数用percent或per cent表示，即“%”。
The price has been reduced by 20 percent （or 20%）since May.
自五月以来价格降低了百分之二十。
The number of visiting patients is 30 percent （or 30%）less than the same time last year.
就诊的患者人数较去年同期下降了百分之三十。
（2）小数用point表示“ .”。
6.54 six point five four
0.618 zero/o point six one eight
762.376 seven hundred and sixty-two point three seven six