Unit 6 Developing ideas What's really green （ppt课件）--外研版（2019）《高中英语》必修第二册.pptx

1、1.It depends.视情况而定2.the majority of.大多数.3.take steps/actions to do sth 采取行动4.break down 分解；出故障5.turn off a device 关掉设备6.go into stand-by mode 进入待机状态7.leak v 流失8.appliance n 电器9.remove the plug from its power supply 从电源上拔下插头mon sense 常识11.produce greenhouse gases 产生温室气体12.in some cases 在有些情况下13.take.

2、into account 考虑.14.awareness n 意识15.be worth doing sth 值得干.1.我们大部分人也采取了各种行动节约能源,减少浪费和污染。The majority of us take steps to save energy and reduce waste and pollution.2.为确保电器设备彻底关闭,请从电源上拔下电器插头。To make sure your appliance is in fact off,remove the plug from its power supply.3.然而,生产纸袋的耗能为塑料袋的四倍,耗水则多达三倍。H

3、owever,making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water.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”hav

4、e been shown to be only half true,or even completely false.Here are some common ones.Which are really green?我们大部分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”被证实并非完全正确,甚至是无稽之谈。下面列举了一些常见的环保观念,其中哪些是正确的呢?Paper shopping bags are better than plastic ones.Plastic bags cause litter and are a danger towil

5、d 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.However,making a paper bag uses four times as much energy as making a plastic bag and up to three times

6、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.纸质购物袋优于塑料袋纸质购物袋优于塑料袋?塑料袋会变成垃圾,被野生动物误食后会对其造成伤害。塑料需要数百年才能分解,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。然而,生产纸袋的耗能为塑料袋的四倍,耗水则多达三倍。其生产过程也会产生更多

7、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一个能重复利用的袋子。When you turn off a device,it stops using power.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-by mode can use even more.This happens because electricity continues to lea

8、k from the device,even when it is turned“off”.To make sure your appliance is in fact off,remove the plug from its power supply,关掉的电器不耗电关掉的电器不耗电?当我们关掉电视等电器时,它会进入待机状态。这种状态下的电器仍然耗电,而且越旧的电器耗电越多。这是因为电器即使已经被“关掉”了,却依然有电流从电器中流失。为确保电器设备彻底关闭,请从电源上拔下电器插头。Eating local food is goodfor the environment.It seems li

9、ke common sense:eating local food should be better for the environment,because it does not need to be transported long distances and kept cold during transport.Unfortunately,it is not that simple.It is the production of food,not its transport,that uses most of the energy and produces most of the gre

10、enhouse gases.In some cases,local produce might have used more energy and produced more greenhouse gases than produce grown a long way away-even taking into account its transport.吃本地食物更利于环保吃本地食物更利于环保?这似乎已是人们常识性的认识:吃本地产的食物更环保,因为不需要长途低温运输。然而事实并没有那么简单。相比于运输,食物的生产过程才是消耗大部分能源及产生大部分温室气体的原因。在有些情况下,即使将运输的因素

11、考虑在内,本地的农产品也可能比距离遥远的外地种植的农产品耗能更多,产生的温室气体也更多。Its better to take a shower than a bath.It depends on how long you spend in the shower and how large your bath is.If you spend more than eight minutes in a shower,you ll use as much water as in a bath-about 50 litres of water.Therefore,the key is to keep y

12、our shower time as short as possible.Environmental awareness is now part of daily life.But it s worth checking common ideas and opinions to see what s really green.淋浴比泡澡更好淋浴比泡澡更好?这取决于你淋浴的时间和你的浴缸大小。如果淋浴超过八分钟,那么耗水量就和泡澡一样多大约为五十升水。所以,节水的关键在于尽量缩短淋浴的时间。环保意识现在已经融入了人们的日常生活,但我们仍需仔细辨别我们已经习以为常的理念和观点中哪些才是真正“绿色环

13、保”的。1.What does Plan B mean in the passage?A.Replacing coal and oil with forms of renewable energy on Earth.B.Exploring other planets,such as Mars,to live on.C.Educating the public to learn the knowledge of space.D.Using robots to search for new resources.2.How long will it take us to reach Mars if

14、we go there one day?A.A few days.B.A few months.C.A few years.D.A few weeks.3.Which statement is true?A.The Mars Desert Research Station is in China.B.Humans have visited Mars in a spacecraft.C.The scientists built Biosphere 2 in the Arizona desert.D.Scientists have succeeded in growing a variety of

15、 plants on Mars.4.What is the purpose of the last paragraph?A.To remind us that we should protect our earth.B.To tell us that it is still decades before we humans get to Mars.C.To inform us that the earth is the only one that we can live on in the future.D.To tellus that our planet is getting warmer

16、 and warmer.倍数表达法：倍数表达法：A A是是B B的的.倍倍温馨提示：温馨提示：表示“两倍两倍”时用twice或double；三倍或三倍以上三倍或三倍以上用“基数词基数词+times”表达。此句型中倍数也可以用分数分数、百分数百分数，等其他程度状语。u 我的房间比你的大三倍。我的房间比你的大三倍。My room is three times as large as yours.My room is three times larger than yours.My room is three times the size of yours.单句语法填空This bridge is

17、three times the length that one.My room is four times (large)than yours.His car is twice expensive as Mr Greens.oflargerasu It is/was+被强调的部分被强调的部分+that/who+其余部分其余部分被强调的部分是除谓语以外除谓语以外所有的句子成分。被强调部分为“人人”时可用who/that，被强调部分是“事物事物”时，只能用that。判断句子是否是强调句判断句子是否是强调句,就是把句子中的就是把句子中的“It is/was”和和“that/who”去掉去掉,语序加以

18、调整语序加以调整,能还原为完整句子且句意通顺能还原为完整句子且句意通顺,则为强调句型。则为强调句型。It was John who/that wore his best suit to the dance last night.It was his best suit that John wore to the dance last night.It was to the dance that John wore his best suit last night.It was last night that John wore his best suit to the dance.The ma

19、jority of us take 1.(step)to save energy and reduce waste and pollution.2.recently,some“green truths”have been shown to be only half true,or even 3.(complete)false.Here are some facts we should know.First of all,paper shopping bags are not 4.(good)than plastic ones.Because 5.(make)a paper bag uses f

20、our 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.So,take a 6.(reuse)bag with you when you go shopping.Secondly,when you turn off a device,it doesnt stop using power.This happens because electricity continues to

21、 leak from the device.stepsButcompletelybettermakingreusable The proper way is 7.(remove)the plug from its power supply.Thirdly,eating local food isnt better for the environment because the production uses much more energy than produce 8.(grow)a long way awayeven taking into account its transport.Lastly,whether its better to take a shower 9.a bath depends on the amount of water we use.So its worth checking common ideas and opinions to see 10.is really green.to removegrownthanwhat