1 . 它几乎是我初中的四倍大。
It is ________.

2 . 由于工业发展，发达国家的温室气体的排放量比发展中国家的多两倍。 (倍数表达)
________ industrial development, ________ emissions in developed countries ________ in developing countries.

3 . 杰西卡付出了以前三倍的时间和精力，所以我相信她这次能成功。(倍数表达法)
Jessica devoted ________ she did before, so I believe she will succeed this time.

4 . 然而，生产纸袋的耗能为塑料袋的四倍，耗水则多达三倍。(倍数＋as＋much＋不可数名词＋as)
However, making a paper bag uses________________making a plastic bag and up to three times the amount of water.

5 . 倍数表达法
[例句]　Olympus Mons, the largest volcano on Mars, is about twice as high as Mount Qomolangma.
[仿写]　Generally speaking, the plane flew ____________ the kite.
一般来说，飞机飞行高度是风筝的十倍。

6 . The size of the newly broadened library is three times what the previous one was. (句型转换)
①The newly broadened library is ________________ the previous one.
②The newly broadened library is ________________ the previous one.
③The newly broadened library is________________the previous one.

7 . 我的农场已经扩展成了一个大农场,是原来的三倍大。
①My farm has expanded into a big one, which is ________________ the previous one.(as...as...)
②My farm has expanded into a big one, which is ________________ the previous one.(倍数+比较级+than)

8 . This year, the company has sold ______________ they did last year.
这家公司今年卖出的新车数量是去年的两倍。

9 . 换句话说,女生人数是男生的三倍。
In other words,there are___________ ___________as many girls as boys.

10 . 这列火车的长度是普通火车的三倍。
This train is three times ________ ________ of a normal one.