倍数表达法.ppt

1、倍数表达法,1A is 倍数 times as 原级 as B This garden is ten times as large as that one. 这个花园是那个花园的十倍大。,Exercises： （1）.The newly-built railway is that one. 新建的铁道是那个的两倍长。,twice as long as,（2）.Asia Europe. 亚洲是欧洲的四倍大。,is four times as large as,2A is 倍数 times the size (height, length ) of B This school building i

2、s five times the size of that one.这所教学楼是那所的五倍大。,Exercises： The earth is the moon. 地球是月球的49倍大。,This street is that street. 这条街是那条街的四倍长。,49 times the size of,four times the length of,3A is 倍数 times 比较级 than B The train runs six times faster than the boat.,火车比轮船快六倍。,Exercises： 1）.This rope is that one.

3、 这条绳子比那条长2倍。,twice longer than,2）This hall is our classroom. 这个大厅比我们的教室大五倍。,five times bigger than,易错题集锦,1、（ 2002 上海） Americans eat _ vegetables per person today as they did in 1910. A. more than twice B. as twice as many C. twice as many as D. more than twice as many,D。more than/ over/above+ 数字，是属于

4、概数表达法的一种。此外，此题考查as.as 表达法，第二个as已经给出。,2、Ten years ago the population of our village was that of theirs。（2008.陕西） A.as twice large as B.twice as large as C.twice as much as D.as twice much as,答案B.本题的关键是population的修饰词用的是large。 1、表示人口的多或少,不用much或little,而要用large或small。 例如: India has a large population. 印

5、度人口众多。 Singapore has a small population. 新加坡人口少。 2、询问某国、某地有多少人口时,不用How much.?,而用How large.?;在问具体人口时用What.? 例如: -How large is the population of your hometown? 你们家乡有多少人口? - -What is the population of Canada? 加拿大的人口有多少?,3、According to statistics，a man is to die of skin cancer as a woman。 A.more than tw

6、ice as likely as B.twice more than as likely C.as likely more than twice D.twice more than likely as,答案 A. 同第一题。,4、(09四川19) My uncles house in the downtown area is much smaller than ours, but it is twice _ expensive. A. asB. so C. too D. very,答案 A。考查as.as 结构的省略问题。,5. （上海市六校2010届高三联考） The lady was so

7、 keen on the fur coat that she would have bought it even if it cost _ A. as twice much B. much as twice C. as much twice D. twice as much,答案 D 同题4.,6、（甘肃省皋兰一中2010届高三上学期第三次月考） Even though you offered _ you have just offered, 1 would not sell it to you. A. the money twice that B. twice the money that

8、C. twice the money what D. the money that twice,答案 B。that引导的定语从句。若选择c，去掉选项中的money即可。,7、（湖南省湘潭市凤凰中学2009届高三第六次月考） I remember Alice, my little niece, often asked questions that children _ would ask. A. twice so old as she B. twice as old as her age C. older twice than her age D. twice of her age,答案 D。若

9、选择B，要去掉age。,8（安徽省两地2010届高三第一次联考） Much to his surprise，he invited only twenty friends to the dinner，but came Atwice as many as Bas many as twice Ctwice as many Dtwice more than,答案 C 。as as结构的省略问题。第二个as 为介词。,9、（山西省平遥中学2009年 9月高三高补摸底考试） -What does the model plane look like? -Well, the wings of the plane are _ of its