高中英語倍數表達法詳解
倍數表達法是歷屆高考的熱點。當我們要表達甲是乙的幾倍時，通常可使用以下句型：
1. 倍數+as+形容詞或副詞的原級+as+其它。
這種結構又常演變成下列兩類：
①倍數+as+many+可數名詞複數+as;
②倍數+as+much+不可數名詞+as。如：
There are seven times as many people as I expected.
是我預料的人數的七倍。
There is five times as much coffee in this glass as in that one.
這個杯子裡的咖啡是那個杯子裡的五倍。
2. 倍數+形容詞（或副詞）的比較級+ than+其它。如：
The hall is five times bigger than our classroom.
這個大廳的面積比我們教師大五倍。
3. 計量名詞+of+名詞+be+倍數+that+of+其它。如：
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。
4. 倍數+what從句。如：
The production is now three times what it was ten years ago.
現在的產量是十年前的三倍。
5. 倍數+more+名詞+than+其它。如：
There are nine times more books in his bag than in yours.
他書包裡的書比你書包裡的書多九倍。
6. 其它表達。如：
She's twice/double my age.
她的年齡是我的兩倍。
The average income of the staff has been increased by 50 percent compared with last year.
與去年相比，該單位職工的收入已增加了50%。
He runs faster than me by three times.
他跑得比我快三倍。
【考查方向】
1）倍數在句中的位置一般放在第一個as前面或比較級前面或名詞前面。
2）用times表示倍數時，一般只限於表示包括基數在內的三倍或三倍以上的數。表示兩倍可以用twice或double,一倍用once.
【重點歸納】
除了我們初中所學的形容詞的比較級的用法，本模組我們主要歸納幾種句式結
（一）含倍數的比較句型
1. 倍數+as+形容詞原級+as…。如：
This bridge is three times as long as that one.
His room is twice as big as mine;in other words,mine is only half as big as his.
【特別提醒】
“as…as”中間加入名詞的句式：
●倍數+as+形容詞+a/an+可數名詞單數+as…
●倍數+as+形容詞+可數名詞複數/不可數名詞+as…。如：
Last year my brother twice as big a new house as mine.
He has collected more than three times as many stamps as I (have).
I spent twice as much time on my studies as you did.
【難點點撥】
該結構的省略：通常省略形容詞後面的名詞及比較的部分。如：
I have to transfer(轉乘）buses so I spend twice as much (money as others)for the bus every day.
2. 倍數+形容詞比較級+than…。如：
This street is four times shorter than that one.
Fear of danger is ten thousand times more terrifying than danger itself.
【特別提醒】
倍數+形容詞比較級+名詞+than…。如：
He earns five times more money now than he did ten years ago.
There are three times more books in our library than in yours.
3. 另外，請注意下面兩種說法：
(1) 倍數+what從句。如：
The length of the road is four times what it was three years ago.
(2) 倍數+that of+被比較物件。如：
Airmail charges almost twice or three times that of a normal mail.
（二）其它句式
1. "比較級+and+比較級"表示"越來越…"。如：
Things are getting better and better every day.
Our country is becoming more and more beautiful.
2. "the+比較級…，the+比較級…"表示“越…，就越…”。如：
The more you have, the more you want.
The more a man knows, the less he knows he knows.
【知識擴充套件】
在形容詞比較級前可以加a little, a bit, a lot, no, any, much, far, even,still等副片語表示程度的加深。如：
The result is much better than we expected.
Actually, health is far more important than wealth.