1)倍数＋形容词／副词比较级＋than
例如
The girl is ten times cleverer than her brother
2)倍数＋as+形容词／副词/(名词)＋as
例如
His apartment is three times as large as that of mine
Americans eat( )as they actually need every day (CET-4 1998,6)
A) twice as much protein
B) twice protein as much twice
C) twice protein as much
D) protein as twice much本题考查倍数的表达方法,正确形式应为：倍数＋as+形容词／副词/(名词)＋as,故答案为A
3)倍数＋名词
例如
The sun is many times the size of the moon
4)动词＋倍数
例如
The pants have shortened two times since they were bought
5)动词+by+数词/百分比/倍数
例如
The landlord wanted to raise the rent by a third
Between 1974 and 1997, the number of overseas visitors expanded
( )27% (CET-4 2000,1)
A) by
B) for
C) to
D) in
本题考查动词+百分比的表达方法,正确的连接词为by,故答案为A
用英语表达“A 是 B 的 N 倍长（宽，高，大，重等）”，“A 比 B 长（宽，高，大，重等）N 倍” 或“A 的长度（宽度，高度，大小，重量等）是 B 的 N 倍”，可用下列几种句型。
1“A + be + 倍数 + as + 计量形容词原级 + as + B”。
This tree is three times as tall as that one
这棵树是那棵树的三倍高。
His father is twice as old as he
他父亲的年纪有他两倍大。
2“A + be + 倍数 + 计量形容词比较级 + than + B ”
The Yangtze River is almost twice longer than the Pearl River
长江差不多比珠江长两倍。
The dictionary is exactly five times more expensive than that one
这本字典比那本恰好贵5倍。
3“A + be + 倍数 + the + 计量名词 + of + B ”
The newly broadened square id four times the size of the previous one
新扩建的广场是未扩建时的四倍大。
4“The + 计量名词 + of + A + be + 倍数 + that + of + B ”
The size of the newly broadened square is four times that of the previous one
新扩建的广场为以前的四倍大。
5其它I‘m twice/ double his age 我的年龄是他的两倍。
I‘ve paid five times the usual price for the stamp
我出了5倍于往常的价格买这枚邮票。
The average income of the staff has been increased by 50 percent compared with last year
与去年相比，该单位职工的收入增加了50%
The price of TVs are twofold（ adj 两部分的， 双重的） down over these years
近几年来，电视机的价格下降了两倍。
倍数表达法
倍数中的“两倍”用twice或double表示；三倍或三倍以上用“基数词+times”构成
①
a
+
be
+
倍数
+
形容词比较级
+
than
+
b
the
stick
is
three
times
longer
than
that
one
这根棍子是那根的三倍长。
our
new
school
is
twice
bigger
than
the
old
one
我们的新学校是老学校的两倍大。
②
a
+
be
+倍数
+
as
+形容词原级
+
as
+
b
the
stick
is
three
times
as
long
as
that
one
这根棍子是那根的三倍长。
the
hotel
has
twice
as
many
rooms
as
that
one
这家宾馆的房间数是那家的两倍。
③
a
+
be
+
倍数
+
the
+
名词
+
of
+
b
这类名词常见的有size（大小），length（长度），weight（重量），height（高度），amount（数量），price（价格），speed（速度），width（宽度），depth（深度）等。
the
stick
is
three
times
the
length
of
that
one
这根棍子是那根的三倍长。
you
are
twice
her
age
你的年龄是她的两倍。
in
this
area
the
grain
output
is
five
time
that
of
before
this
year
这个地区今年的粮食产量是以往的五倍。
④
其他表达
i’m
double
your
age
我的年龄是你的两倍。
i
have
as
many
books
again
as
you
我的书是你的两倍
1、倍数+比较级
(1) 倍数 asas (意思是“A是B的几倍”。)
I am twice as old as he 我的年纪是他的两倍。
He earns twice as much as he used to 他比往常多赚二倍的钱。
An ordinary subway train, approaching the station, can be twice as loud as the loudest jet 发出的声音可能是喷射机的两倍。
She studies three times as hard as I 她用功的程度是我的三倍。
This line is four times as long as that one 这条线是那条线的四倍长。
We've produced twice as much cotton this year as ten years ago 今年的棉花比十年前多了一倍。
He has got three times as many books as his sister 他拥有的书的数量是他妹妹的三 倍。
在比较级前，还可以用over，more thant 等表示“比……倍还要多”。例如：
He is more than three times as rich as I 他的财富是我的三倍还不止。
I am more than twice as old as he 我的年龄是他的两倍还不止。
He studies more than three times as hard as I 他用功的程度是我的三倍还不止。
He has collected more than three times as many stamps as I 他搜集的邮票是我的三倍还不止。
(2) 倍数+比较级 (意思是：A是B的几倍)
Line A is four times the length of line B 线条 A 是线条 B 的四倍长。
I have five times the number of Tom’s books 我有五倍于汤姆的书。
He has three times my money 他的钱是我的三倍。
The river is ten times the length of the Tamsui River 这条河的长度是淡水河的十倍。
This street is four times shorter than that one 这条街道比那条短四倍。
The mother elephant is one hundred times heavier than the baby elephant这只母象比小象重一百倍。
It is ten times louder than another 它比另外一个的声音大十倍。
This street is three times wider than that one 这条街比那条街宽三倍。
I am twice older than he 我的年纪比他大两倍。
使用morethan 比较级的例句：
He earns five times more money than he did ten years ago 他现在挣的钱比十年前挣的多 5 倍。
There are twice more students in our class than in theirs 我们班的学生人数比他们班多两倍。
比较级也可使用分数、小数等数字。例如：
The box is one-third bigger than that one 这个盒子比那个盒子大三分之一。
Last year the output value of industry was 59 percent higher than that of 1976 去年工业产值比 1976 年增长了 59 ％。
My command of English is not half so good as yours 我英语掌握得还不及你的一半儿好。
在比较级前，还可以用over，more thant 等表示“比……倍还要多”。例如：
It was over twice the distance of the earth from the sun 那是地球到太阳的距离的两倍多。
He has more than three times my money 他的钱是我的三倍还不止。
2、倍数+the 度量词 of
The earth is 49 times the size of the moon 地球的体积是月球的 49 倍。
This river is three times the depth of that one 这条河深度是那条河的三倍。
下边也可看作是这种句式的变化：
The length of the road is four times what it was three years ago 这条路的长度是三年前的 4 倍。
The price of the meat is twice what it was last year 肉价是去年的两倍。
The size of the sun is a million times over that of the earth 太阳的体积比地球的体积大一百万倍。
He is three times up on your age 他的年龄是你的 4 倍(或：比你的年龄大 3 倍)
In this workshop the output of July was 35 times that of January 七月份的产量是元月份的 35 倍
3、其它表示法
(1) 英语中有些词表示特定的倍数，例如： again (一倍), twice, double (两倍), triple (三倍), fourfold (四倍) 等数。
My Aunt is as old again as I am 我姑姑的年龄比我大一倍。
The top-brand clothes are often sold as double the normal price here 售价经常比正常的售价高一倍。
The new work procedure tripled the output 新工艺使产量增加两倍。
The output of grain increased fourfold 粮食产量增加了三倍。
(2) 使用by, compared with 等
Compared with last year， our coal output has increased by three times
与去年相比，我们的煤产量增长了 3 倍。(使用by)
His speed is faster than mine by four times
他的速度比我的快 4 倍。
The number of the students in our school has increased four times compared with 1980
我们学校的学生人数比 1980 年增加了 3 倍。(使用 compared with)
The production of integrated circuits has been increased to three times as compared with last year 集成电路的产量比去年增加了两倍。
The principal advantage of the products is a two-fold reduction in weight
这些产品的主要优点是重量减轻了1／2。
I’ve paid five times the usual price for the stamp
我出了5倍于往常的价格买这枚邮票。
The average income of the staff has been increased by 50 percent compared with last year
职工的收入增加了50%
The price of TVs are twofold down over these years
近几年来，电视机的价格下降了两倍。
She spent half as much money as you
她花掉的钱只有你花掉的一半。
1英语中，表示“a的大，长，宽等是b的倍”时，常见的有两种表达法：
（1）a
+be+基数词+times
+形容词比较级+than
b
例句（1）：my
house
is
three
times
bigger
than
yours（我的房子是你的三倍大）
例句（2）：this
pole
is
twice
longer
than
that
one(英语中，两倍是twice,不用two
times)
（2）a+be+times+as+形容词原型+as
b
如上面的例句（1）（2）可分别改为：my
house
is
three
times
as
big
as
yours。
/this
pole
is
twice
as
long
as
that
one
表示“几倍大小（长短；数量）”，由“倍数+ the size（length，amount……）”结构组成。
1）基数词表示数量的多少；
2）基数词写法和读法： 345 three hundred and forty-five；
3）基数词一般是单数形式，但下列情况，常用复数：与of短语连用，表示概数，不能与具体数目连 用，如scores of people 指许多人。
扩展资料：
语法特征：
（1）通常与量词组合成数量短语，才能做句法成分，例如“ [2] 十位长老”。数词一般不直接跟名词组合，但是古汉语以“数·名”直接组合为常，现代也仍然保留某些古汉语说法，例如“一草一木”。
基数词不能单独做句法成分，只有在数学计算时或者文言格式中可单用，例如“一加一等于二”。
序数词在特定情况下也可以直接修饰名词，多数是组成专名，中间不用量词。例如“第二车间”。
（2）数量短语通常用作定语或补语、状语。例如“一片浮云、看了一眼、一把拉住”。
参考资料来源：百度百科-数词
一、用 times 表示倍数（一般限于包括基数在内三倍或三倍以上的数。表示两倍的数，一般用 twice ）。其句式有：1 “… times ＋形容词 / 副词的比较级＋ than …”例如：Line AB is three times longer than line CD线段 AB 是（线段） CD 的三倍长。This hall is five times bigger than our classroom这个大厅比我们的教室大 5 倍。2 “… times +as + 形容词 / 副词的原级＋ as …”例如：This table is three times as long as that one这张桌子是那张桌子的三倍长。This dictionary is five times as thick as the one you borrowed from the library这本词典的厚度是你从图书馆借的那本（厚度）的 5 倍。3 “… times + the + 名词（如： size， height， weight， length， width 等）＋ of …”例如：The earth is 49 times the size of the moon地球的体积是月球的 49 倍。This river is three times the depth of that one这条河是那条河的三倍深。4 “… times + more ＋名词＋ than …”例如：He earns five times more money than he did ten years ago他现在挣的钱比十年前挣的多 5 倍。There are twice more students in our class than in theirs我们班的学生人数比他们班多两倍。5 “… times +as many （或 much ）＋名词＋ as …”例如：We've produced twice as much cotton this year as （ we did ） ten years ago今年我们生产的棉花比十年前多了一倍。（汉语中的多一倍实际上也指两倍一样多。）He has got three times as many books as his sister他拥有的书的数量是他妹妹的 3 倍。6 “… times + what 从句”例如：The length of the road is four times what it was three years ago这条路的长度是三年前的 4 倍。The price of the meat is twice what it was last year肉价是去年的两倍。7 “… times + up on （或 over ）…”例如：The size of the sun is a million times over that of the earth太阳的体积比地球的体积大一百万倍。He is three times up on your age他的年龄是你的 4 倍（或：比你的年龄大 3 倍）。8 “… +by + … times ”例如：Compared with last year， our coal output has increased by three times与去年相比，我们的煤产量增长了 3 倍。His speed is faster than mine by four times他的速度比我的快 4 倍。9 “… times + compared with ＋被比较对象”例如：The number of the students in our school has increased for times compared with 1980我们学校的学生人数比 1980 年增加了 3 倍。10 “… times + that of + 被比较对象”例如：In this workshop the output of July was 35 times that of January这个车间七月份的产量是元月份的 35 倍。二、用分数、百分数表示倍数。例如：The box is one-third bigger than that one这个盒子比那个盒子大三分之一。Last year the output value of industry was 59 percent higher than that of 1976去年工业产值比 1976 年增长了 59 ％。My command of English is not half so good as yours我英语掌握得还不及你的一半儿好。三、用 again （一倍）， double （两倍）， triple （三倍）， fourfold （四倍）等词表示倍数。例如：My Aunt is as old again as I am我姑姑的年龄比我大一倍。The top-brand clothes are often sold as double the normal price here这里名牌衣服的售价经常比正常的售价高一倍。The new work procedure tripled the output新工艺使产量增加两倍。The output of grain increased fourfold粮食产量增加了三倍。
我们要表达甲是乙的几倍时，通常用下面三个句型来表示：
1 “A+倍数+形容词或副词的比较级+than+B”，表示“A比B大（长、高、宽等）多少倍”。如：
This rope is twice longer than that one
这根绳子是那根绳子的两倍长（比那根绳子长一倍）。
This hall is five times bigger than our classroom
这个大厅比我们的教室大四倍(是我们教室的五倍)。
The car runs twice faster than that truck
这辆小车的速度比那辆卡车快一倍（是那辆卡车的两倍）。
2“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。如：
Asia is four times as large as Europe
亚洲的面积是欧洲的四倍。
This big stone is three times as heavy as that one
这块大石头的重量是那块的三倍。
The plane flew ten times as high as the kite
那架飞机的飞行高度是那只风筝的十倍。
3 “A+倍数+the size/height/length/width, etc+of+B”，表示“A正好是B的多少倍”。如：
This street is four times the length of that one
这条街是那条街的四倍长。
This hill is four times the height of that small one
这座山的高度是那座小山的四倍。
4除掌握倍数表达的三个常规句型外，我们更要注意的是其常规句型的变形及其特殊规律。
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