Unit 6 Earth First Developing ideas （ppt课件）-2023新外研版（2019）《高中英语》必修第二册.pptx

1、unit 6 Earth first-Developing ideas1.Which shopping bag is more environmentally friendly?()A plastic bag.()A paper bag.()Neither of these.2What should you do to save energy when leaving your home?()Turn off a device.()Unplug a device.()Neither of these.3What food is better for the environment?()Food

2、 produced near to where you live.()Food produced far from where you live.()It depends.4.Which uses less water?()Taking a bath.()Taking a shower.()It depends.l Paper shopping bags are better than plastic ones.l When you turn off a device,it stops using power.l Eating local food is good for the enviro

3、nment.l Its better to take a shower than a bath.Read the passage quickly and judge they are right or not?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

4、 only half true,or even completely false.Here are some common ones.Which are really green?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 a

5、re 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 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 y

6、ou go shopping.Paper bags are not good for the environment.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 leak from the device,even when it

7、 is turned“off”.To make sure your appliance is in fact off,remove the plug from its power supply.Turning off a device wont stop it from using power.It seems like common sense:eating local food should be better for the environment,because it does not need to be transported long distances and kept col

8、d 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 greenhouse gases.In some cases,local produce might have used more energy and produced more greenhouse gases than produce grown a long way away e

9、ven taking into account its transport.Eating local food isnt always better for the environment.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,youll use as much water as in a bath about 50 litres of water.Therefore,the key is

10、 to keep your shower time as short as possible.Environmental awareness is now part of daily life.But its worth checking common ideas and opinions to see whats really green.Its not always better to take a shower than a bath.Complete theseConclusionIntroductionBody Complete theseConclusionIntroduction

11、Bodygreen truth 1green truth 2green truth 3green truth 4Paper bags are not good for the environment.Turning off a device wont stop it from using power.Eating local food isnt better for environment.Its not always better to take a shower than a bath.Think and share!Which of the“green truths”surprises

12、you most?Give your reasons.Think and share!2Are you aware of any other“green truths”that are not true?Share them with the class.Practice!3.How“green”are you?Share your“green actions”with the class.4.What can you do to become“greener”?Work in groups.Give a talk about one of the“green truths”in the pa

13、ssage.1Use these questions to help plan your talk.Which“green truth”are you going to talk about?Why do people believe it is“green”?Why is it not completely true?What can you do to become“greener”?2Organise your talk following the steps below.Start your talk by stating the topic.Describe your chosen“green truth”in more detail.Explain why it is not completely“green”.End your talk by encouraging your audience to become“greener”.Give your talk to the class.20 Thank you