高中英语倍数表达详解

　　1. 倍数+as+形容词或副词的原级+as+其它。

　　这种结构又常演变成下列两类：

　　①倍数+as+many+可数名词复数+as;

　　②倍数+as+much+不可数名词+as。如：

　　There are seven times as many people as I expected.

　　是我预料的人数的七倍。

　　There is five times as much coffee in this glass as in that one.

　　这个杯子里的咖啡是那个杯子里的五倍。

　　2. 倍数+形容词（或副词）的比较级+ than+其它。如：

　　The hall is five times bigger than our classroom.

　　这个大厅的面积比我们教师大五倍。

　　3. 计量名词+of+名词+be+倍数+that+of+其它。如：

　　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。

　　4. 倍数+what从句。如：

　　The production is now three times what it was ten years ago.

　　现在的产量是十年前的三倍。

　　5. 倍数+more+名词+than+其它。如：

　　There are nine times more books in his bag than in yours.

　　他书包里的书比你书包里的书多九倍。

　　6. 其它表达。如：

　　She's twice/double my age.

　　她的年龄是我的两倍。

　　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）倍数在句中的位置一般放在第一个as前面或比较级前面或名词前面。

　　2）用times表示倍数时，一般只限于表示包括基数在内的三倍或三倍以上的数。表示两倍可以用twice或double,一倍用once.

　　【重点归纳】

　　除了我们初中所学的形容词的比较级的用法，本模块我们主要归纳几种句式结

　　（一）含倍数的比较句型

　　1. 倍数+as+形容词原级+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.

　　【特别提醒】

　　“as…as”中间加入名词的句式：

　　●倍数+as+形容词+a/an+可数名词单数+as…

　　●倍数+as+形容词+可数名词复数/不可数名词+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.

　　【难点点拨】

　　该结构的省略：通常省略形容词后面的名词及比较的部分。如：

　　I have to transfer(转乘）buses so I spend twice as much (money as others)for the bus every day.

　　2. 倍数+形容词比较级+than…。如：

　　This street is four times shorter than that one.

　　Fear of danger is ten thousand times more terrifying than danger itself.

　　【特别提醒】

　　倍数+形容词比较级+名词+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，请注意下面两种说法：

　　(1) 倍数+what从句。如：

　　The length of the road is four times what it was three years ago.

　　(2) 倍数+that of+被比较对象。如：

　　Airmail charges almost twice or three times that of a normal mail.

　　（二）其它句式

　　1. "比较级+and+比较级"表示"越来越…"。如：

　　Things are getting better and better every day.

　　Our country is becoming more and more beautiful.

　　2. "the+比较级…，the+比较级…"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.

　　【知识扩展】

　　在形容词比较级前可以加a little, a bit, a lot, no, any, much, far, even,still等副词组表示程度的加深。如：

　　The result is much better than we expected.

　　Actually, health is far more important than wealth.

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