高考英语：
浅谈“倍数”的表达法
有这样一道高考题：
（ 2003 上海） The house rent is expensive. I've got about half the space I had at home and I'm paying _______ here.
A. as three times much
B. as much three times
C. much as three times
D. three times as much
该题的正确答案为 D .显然本题是在考查倍数的表达法。倍数表达法是高中英语教学的重点，也是历年的高考热点之一。掌握倍数的表达法对于同学们学好英语具有重要意义。下面对倍数的几种表达法作一归纳：
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。
高考英语：
浅谈“倍数”的表达法
