外研版 (2019)必修 第二册Unit 6 Earth first随堂练习题

这是一份外研版 (2019)必修 第二册Unit 6 Earth first随堂练习题，共3页。

Hwever, making a paper bag uses fur times as much energy as making a plastic bag and up t three times the amunt f water.（教材P68）
然而，制造一个纸袋的耗能为制造一个塑料袋的四倍，耗水量多达三倍。
情景导学
The new stadium being built fr the XXIV Olympic Winter Games in Beijing will be three times as big as the present ne.
→The new stadium being built fr the XXIV Olympic Winter Games in Beijing will be three times bigger than the present ne.
→The new stadium being built fr the XXIV Olympic Winter Games in Beijing will be three times the size f the present ne.
为（迎接）2022年北京冬季奥运会而正在修建的新体育场将是现在这个的三倍大。
The prductin is nw three times what it was ten years ag.
在的产量是十年前的三倍。
归纳拓展
常见的倍数表达法句式：
①A+谓语+倍数+as+形容词/副词________+as+B
②A+谓语+倍数+形容词/副词________+than+B
③A+谓语+倍数+the+________size/length/height/depth/width/weight...）+f+B
④A+谓语+倍数+________从句
链接高考
句型转换
1-1 The electrnic waste stream is increasing three times faster than traditinal garbage as a whle.
→The electrnic waste stream is increasing three times________ ________ ________ traditinal garbage as a whle.
1-2 Frgs living near brightly lit highways suffer ncturnal light levels that are as much as a millin times brighter than nrmal...
-Frgs living near brightly lit highways suffer ncturnal light levels that are as much as a millin times ________ ________ ________ nrmal...
完成句子
1-3 当你坐着不动的时候，你的大脑消耗的能量是你心脏消耗的两倍。
When yu're sitting still yur brain is using ________ ________ ________ ________ ________ yur heart.
参考答案：
知识点1
①原级
②比较级
③度量名词
④what
1-1 as fast as
1-2 as bright as
1-3 twice as much energy as