(
课件网) Read ____ _____ to work out the main idea. Most of us are aware that we must take care of the environment, and the majority of us take steps to save energy and reduce waste and pollution. But recently, some “green truths” have been shown to be only half true, or even completely false. Here are some common ones. Which are really green 我们大多数人都意识到要保护环境，也采取了各种行动节约能源， 减少浪费和污染。 但是近来，一些“绿色环保真相”被证实并非完全是正确的， 甚至是无稽之谈。 下面列举了一些常见的环保观念，其中哪些是真正的环保做法？ be aware of /that take care of =look after the majority of take steps/measures to do sth save energy recently 时态 Paper shopping bags are better than plastic ones. Plastic bags cause litter and are a danger to wild animals, which mistake them for food. It takes hundreds of years for plastic to break down, but much less time for paper. Because of this, people think paper bags are the better environmental choice. 塑料袋会变成垃圾，被野生动物误食后会对其造成伤害。 塑料的分解需要数百年的时间，而纸的降解时间要短得多。 因此人们认为纸袋是更为环保的选择。 be a danger to mistake …for… break down because of However, making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water. The process also produces more greenhouse gases. In fact, both kinds of bags are bad for the environment. So, take a reusable bag with you when you go shopping. 然而，生产纸袋所消耗的能源是塑料袋的四倍，而耗水则多达三倍。 其生产过程也会产生更多的温室气体。 事实上这两种袋子都不够环保， 所以出门购物时请带上一个可重复使用的袋子。 Up to in fact in actual fact in reality as a matter of fact 3. be bad for be good for 倍数的表达方式 倍数+as many/much +n. + as 倍数+ the amount/ size /height/ weight/length+ of 1.“A + be + 倍数+ as +原级+ as + B”. This tree is three times as tall as that one.这棵树是那棵树的三倍高. His father is twice as old as he.他父亲的年纪有他两倍大. 2.“A + be + 倍数+比较级+ than + B ” The Yangtze River is almost twice longer than the Pearl River. 长江差不多比珠江长两倍. The dictionary is exactly five times more expensive than that one.这本字典比那本恰好贵5倍. 3.“A + be + 倍数 + the + amount/ size/ length/ height + of + B” The newly broadened square id four times the size of the previous one.新扩建的广场是未扩建时的四倍大. 4.“The +计量名词+ of + A +be+倍数+ that + of + B ” 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. They employed 90 people ,three times as many as last year. The state is at least twice as big as England. The area received three times the amount of rain it got last year. Sound travels four times faster in water than in air. She earns five times as much as I do. She earns four times more than I do. When we turn off a device, such as television, it goes into stand-by mode. Devices in this mode still use power, and older devices in stand-b ... ...
