2022年倍数表达法

1、倍数表达法是历届高考的热点。当我们要表达甲是乙的几倍时，通常可使用以下句型：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：倍数+as+many+可数名词复数+as;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

2、 hall is five times bigger than our classroom. 这个大厅的面积比我们教师大五倍。3.倍数 +the size/height/length/width.etc.+of+ 其它。如：this road is six times the length of that one. 这条路是那条路的六倍长。4.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。

3、5.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。6.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。精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 1 页，共 4 页 - - - - - - - - -精品学习资料 可选择p d f - - - - - - - - - - -

4、 - - - 第 1 页，共 4 页 - - - - - - - - -7.其它表达。如：shes 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

5、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构：（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：精品学习资料 可选择p d f - - -

6、- - - - - - - - - - - 第 2 页，共 4 页 - - - - - - - - -精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 2 页，共 4 页 - - - - - - - - - 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 (

7、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

8、 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.倍数 +the+名词（如size,height,weight,length,width,depth等） +of 。如：this well is three times the depth of that one. 精品学习资料

9、 可选择p d f - - - - - - - - - - - - - - 第 3 页，共 4 页 - - - - - - - - -精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 3 页，共 4 页 - - - - - - - - -4.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

10、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 impo