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首页 > 高考总复习 > 高考英语复习方法 > 高中英语倍数表达详解

高中英语倍数表达详解

2020-09-04 19:37:27网络整理



  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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