用英語表達“A 是 B 的 N 倍長（寬,高,大,重等）”,“A 比 B 長（寬,高,大,重等）N 倍” 或“A 的長度（寬度,高度,大小,重量等）是 B 的 N 倍”,可用下列幾種句型.
1.“A + be + 倍數 + as + 計量形容詞原級 + as + B”.
This tree is three times as tall as that one.
這棵樹是那棵樹的三倍高.
His father is twice as old as he.
他父親的年紀有他兩倍大.
2.“A + be + 倍數 + 計量形容詞比較級 + than + B ”
The Yangtze River is almost twice longer than the Pearl River.
長江差不多比珠江長兩倍.
The dictionary is exactly five times more expensive than that one.
這本字典比那本恰好貴5倍.
3.“A + be + 倍數 + the + 計量名詞 + of + B ”
The newly broadened square id four times the size of the previous one.
新擴建的廣場是未擴建時的四倍大.
4.“The + 計量名詞 + of + A + be + 倍數 + that + of + B ”
The size of the newly broadened square is four times that of the previous one.
新擴建的廣場為以前的四倍大.
5.其它I‘m twice/ double his age.我的年齡是他的兩倍.
I‘ve paid five times the usual price for the stamp.
我出了5倍於往常的價格買這枚郵票.
The average income of the staff has been increased by 50 percent compared with last year.
與去年相比,該單位職工的收入增加了50%.
The price of TVs are twofold（ adj.兩部分的,雙重的） down over these years.
近幾年來,電視機的價格下降了兩倍.
壹、用times表示倍數（壹般限於包括基數在內三倍或三倍以上的數.表示兩倍的數,壹般twice.）.其句型有：
1.times＋形容詞（副詞）比較級＋than...
This hall is five times bigger than our classroom.這個大廳比我們的教室大五倍.（是我們教室的六倍大）
The car runs twice faster than that truck.這輛轎車的速度比那輛卡車快兩倍.（是那輛卡車的三倍快）
2.times＋as＋形容詞（或much）或副詞原級＋as...
The big box is four times as heavy as the small one.大箱子是小箱子的四倍重.
Asia is four times as large as Europe.亞洲的面積是歐洲的四倍.
Ten is twice as much as five.十是五的兩倍.
The plane flew ten times as high as the kite.那架飛機飛行高度是那個風箏的十倍.（高出九倍）
3.times＋the＋名詞（size,height,weight,length,width）＋of
Your playground is 900 metres wide,three times the size of ours.妳們操場有900米寬,是我們的三倍.
This street is four times the length of that one.這條大街是那條街的四倍長.
This big tree is four times the height of that small one.這棵大樹的高度是那棵小樹的四倍.（比那棵小樹高三倍）
也可譯成:The height of the big tree is four times that of that small one.
4.times＋more＋名詞（可數,不可數）＋than...
There are four times more books in our library than in yours.我們圖書館藏書（數量）是妳們圖書館的四倍.（多三倍）
We have produced twice more grain this year than we did last year.我們今年生產的糧食比去年增長壹倍.（是去年的兩倍）
5.times ＋as many（或much）＋名詞＋其它……
There is three times as much water in this pot as in that one.這個壺裏的水（量）是那個壺裏的三倍.
There are five times as many students as we expected.到的人是我們預計的五倍.
6.times＋over＋被比對象表示“增加……倍”.如:
The grain output in that village was twice over that of 1978.那個村的糧食產量比壹九七八年的增加了兩倍.
7.times＋thatof＋被比對象“是……倍”.如:
In this workshop,the output of July was 3.5 times that of January.這個車間七月份的產量是元月份的三點五倍.
二、用...％（percent,per cent）＋up on＋被比對象
Altogether,more than 70 percent of the surface of our planet is covered by water.
我們地球的表面百分之七十以上被水覆蓋.
Our factory's output of TV sets in 1998 was 400％ up compared with 1980.1998年我們工廠電視機的產量與1980年相比增長 400％.
The industrial output of last year in our factory was 250％ up on that of 2000.我們工廠去年的工業產量比2000年增加了 250％.（或增加兩倍半）
三、用double表示倍數
1.double作形容詞,“兩倍的”.如:
The production is now double what it was ten years ago.現在的產量是十年前的兩倍.
2.double作動詞,“是……的兩倍”.如:
The output has been doubled in the past five years.過去五年中產量翻了壹番.