3/4 three fourths或 three quarters
1/3 one third或a third
24/25 twenty-four twenty-fifths
1/2 a half
1/4 one quarter或a quarter
1 1/2 one and a half
1 1/4 one and a quarter
当分数后面接名词时,如果分数表示的值大于1,名词用复数;小于1,名词用单数。
1 1/2 hours 一个半小时(读作 one and a half hours)
2 3/4 meters 二又四分之三米(读作two and three-fourths meters)
4/5 meter 五分之四米
5/6 inch 六分之五英寸
表示“n次方”的说法:指数用序数词,底数用基数词。
10的7次方 the seventh power of ten(ten to the seventh power)
6的10次方 the tenth power of six(six to the tenth power)
1、用“基数词+序数词”表示
例句:The centimeter is one-tenth of the decimeter or one-hundredth of the meter.
厘米是分米的十分之一,或者说是米的百分之一。
However,the number of boys will bea third or less than the girls in the class.
但是,班里男生的人数将比女生少三分之一或更少。
2、用percent等表示
表示百分之一可以说one(a)hundredth,但更常用one percent或per cent,即用百分数表示法来表达。
例句:Our bodies are 65percent water.
我们人体含65%水分。
Seventy-five percent of the earth'ssur- face is covered by water.
地球表面的75%被水覆盖着。
3、用part表示
“基数词(或a)+序数词+part(s)”,例如 a hundred part百分之一;
“基数词+part(s)+in+基数词”,例如 five parts in one thousand千分之五;
“基数词+part(s)+per+基数词” ,例如one part per million百万分之一。
4、用“基数词+介词+基数词”表示
例句:The map is drawn to a scale of one of ten thousand.
这张地图是按万分之一的比例绘制的。