英语中倍数的表示方法.doc

英语中倍数的表示方法
在英语当中，可以用下列方式来表示倍数。
1、 主语＋谓语＋倍数（分数）＋as ＋adj＋as＋……
This room is twice as big as that one.
I have four times many books as my friend.
2、主语＋谓语＋倍数（分数）＋the size （amount 、length ）of …
The earth is 49 times the size of the moon.
The length of this rope is two thirds the length of that one.
3、 主语＋谓语＋倍数（分数）＋adj （adv）比较级＋than ＋…
Give me four times more than Amy borrowed from me .
The grain output is 8 percent higher this year than that of last year.
4、 还可以用by＋倍数表示增加多少倍、几分之几、百分之几
The production of grain has been increased by two fifths （36 percent） this year.