优质解答
time 倍
1.9年来这家公司的规模扩大了一倍.
The company doubled its size in nine years.
2.这比那个大一倍.（注意：as large again as是…的两倍,比…大一倍）
It is as large again as that.
3.这条街道比那条短四倍.
This street is four times shorter than that one.
4.她用功的程度是我的三倍.
She studies three times as hard as I.
5.他的财富是我的三倍还不止.
He is more than three times as rich as I.
6.我有五倍于汤姆的书.
I have five times the number of Tom's books.
7.这条街比那条街宽三倍.
This street is three times wider than that one.
8.这条线是那条线的四倍长.
This line is four times as long as that one.
英语分数的表示法：
一、用“基数词＋序数词”表示
分数在英语中通常是借助于基数词和序数词来共同表达的.其中基数词表示分子,序数词表示分母.
如：
1．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.
2．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.
从以上例子可以看出：分子除用one外,也可用a；如果分子大于1,分母要用复数形式.但是,1／2不能说a（one）second,而要说a（one）half.例如：
3．The sum of one half,one third and one fourth of a certain number is 13.某数的1／2,1／3和1／4的和是13.
1／4和3／4可以说a（one）fourth和three fourths,但常用a quarter和three quarters表示.应该注意的是,分数修饰名词时,若该名词是不可数名词只能用单数；若是可数名词,用单数或复数均可.但是,若它们在句子中作主语,则谓语动词是用单数还是复数取决于名词,即与分数所修饰的名词保持一致.例如：
4．Only one-fifth of air consists of oxygen．氧气只占空气的1／5.
5．About two thirds of the students attendthe meeting．大约2／3的学生都参加了会议.
带分数也是常见的英语数词表达.所谓带分数,实际上是“整数＋分数”,表达时分而述之,只是整数部分与分数部分要用连词 and连接.当带分数修饰名词时,该名词通常是复数,但若名词置于整数one或a之后,则用单数.“带分数＋名词”作主语时,谓语动词根据临近原则要用复数.例如：
6．You should finish the work within one and a fourth hours．你应在1．25小时内完成工作.
7．The atom breaks up in a minute and a quarter．原子在1．25分钟内裂变.
二、用per cent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.例如：
8．Our bodies are 65percent water．我们人体含65％水分.
9．Seventy-five percent of the earth'ssur- face is covered by water．地球表面的75％被水覆盖着.
10．Eighty-five percent of the students in English department are girls．英语系85％的学生是女生.
三、用part表示
名词part有“……分之一”的意思,分子大于1时,part用复数.表示分数的结构一般有以下三种：
（1）“基数词（或a）＋序数词＋part（s）” a hundred part百分之一
（2）“基数词＋part（s）＋in＋基数词” five parts in one thousand千分之五
（3）“基数词＋part（s）＋per＋基数词” one part per million百万分之一
四、用“基数词＋介词＋基数词”表示
借助介词表示分数,介词前的数词是分子,介词后的数词是分母.例如：
11．Ninety-nine people out of a hundred,if they were asked who first found America,would answer Clumbus．如果要问是谁首先发现美洲,一百个人中有九十九个（百分之九十九）将回答是哥伦布.
这种结构中的介词主要有in,out of,of以及to
12．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.
time 倍
1.9年来这家公司的规模扩大了一倍.
The company doubled its size in nine years.
2.这比那个大一倍.（注意：as large again as是…的两倍,比…大一倍）
It is as large again as that.
3.这条街道比那条短四倍.
This street is four times shorter than that one.
4.她用功的程度是我的三倍.
She studies three times as hard as I.
5.他的财富是我的三倍还不止.
He is more than three times as rich as I.
6.我有五倍于汤姆的书.
I have five times the number of Tom's books.
7.这条街比那条街宽三倍.
This street is three times wider than that one.
8.这条线是那条线的四倍长.
This line is four times as long as that one.
英语分数的表示法：
一、用“基数词＋序数词”表示
分数在英语中通常是借助于基数词和序数词来共同表达的.其中基数词表示分子,序数词表示分母.
如：
1．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.
2．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.
从以上例子可以看出：分子除用one外,也可用a；如果分子大于1,分母要用复数形式.但是,1／2不能说a（one）second,而要说a（one）half.例如：
3．The sum of one half,one third and one fourth of a certain number is 13.某数的1／2,1／3和1／4的和是13.
1／4和3／4可以说a（one）fourth和three fourths,但常用a quarter和three quarters表示.应该注意的是,分数修饰名词时,若该名词是不可数名词只能用单数；若是可数名词,用单数或复数均可.但是,若它们在句子中作主语,则谓语动词是用单数还是复数取决于名词,即与分数所修饰的名词保持一致.例如：
4．Only one-fifth of air consists of oxygen．氧气只占空气的1／5.
5．About two thirds of the students attendthe meeting．大约2／3的学生都参加了会议.
带分数也是常见的英语数词表达.所谓带分数,实际上是“整数＋分数”,表达时分而述之,只是整数部分与分数部分要用连词 and连接.当带分数修饰名词时,该名词通常是复数,但若名词置于整数one或a之后,则用单数.“带分数＋名词”作主语时,谓语动词根据临近原则要用复数.例如：
6．You should finish the work within one and a fourth hours．你应在1．25小时内完成工作.
7．The atom breaks up in a minute and a quarter．原子在1．25分钟内裂变.
二、用per cent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.例如：
8．Our bodies are 65percent water．我们人体含65％水分.
9．Seventy-five percent of the earth'ssur- face is covered by water．地球表面的75％被水覆盖着.
10．Eighty-five percent of the students in English department are girls．英语系85％的学生是女生.
三、用part表示
名词part有“……分之一”的意思,分子大于1时,part用复数.表示分数的结构一般有以下三种：
（1）“基数词（或a）＋序数词＋part（s）” a hundred part百分之一
（2）“基数词＋part（s）＋in＋基数词” five parts in one thousand千分之五
（3）“基数词＋part（s）＋per＋基数词” one part per million百万分之一
四、用“基数词＋介词＋基数词”表示
借助介词表示分数,介词前的数词是分子,介词后的数词是分母.例如：
11．Ninety-nine people out of a hundred,if they were asked who first found America,would answer Clumbus．如果要问是谁首先发现美洲,一百个人中有九十九个（百分之九十九）将回答是哥伦布.
这种结构中的介词主要有in,out of,of以及to
12．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.