1.分數詞的一般表示法：分子用基數詞表示，分母用序數詞表示，如果分子大于1，分母用序數詞的復數形式。如：one-fourth，seven-ninths，two and three-fifths，thirty and seven-eighths。
You spend one-second of the monthly expense on body-building .
你將月開銷的二分之一用于健身運動。
We covered one-half (of) the distance on foot.
我們步行了一半路程。
I think we＇ve covered three quarters of the distance now.
我想我們現在已經走了全程的四分之三。
Each piece is called one-fourth (or one-quarter).
每一塊稱為四分之一。
If I ate two pieces, I ate two-fourths, namely one-second.
如果我吃了兩塊，我就吃了四分之二，亦即二分之一。
2.分數詞的特殊表示法。如：a(one) half，a quarter，three quarters，two and a quarter，one and a half，twenty-two over nine。
My bag is at least 21/2 times the weight of yours.
我的包至少是你們的兩倍半重。
I give you one half, and keep the other half for myself.
我給你們一半，自己留了另一半。
A quarter of the students are girls.
學生中的四分之一是女生。
She used one-third of her income on clothing.
她把自己三分之一的收入用于服裝。
Some $30 million, about one-sixth of the total budget, was spent on medical care last year.
去年約占總預算六分之一的三千萬美元用于醫療保健。
This laptop computer is only one-tenth the weight of a normal desk-top computer.
這臺膝上型電腦僅是一臺普通桌上型電腦的十分之一重。