Unit 6 Earth first Developing ideas & Presenting ideasppt课件--2022高中英语新外研版必修第二册.pptx

1、高中英语 必修第二册 UNIT 6 Earth firstUNIT 6 Earth firstDeveloping ideas,Presenting ideas&ReflectionDeveloping ideas Look at the questions about“green living”and tick your answers.1Which shopping bag is more environmentally friendly?A plastic bag.A paper bag.Neither of these.2What should you do to save energ

2、y when leaving your home?Turn off a device.Unplug a device.Neither of these.3What food is better for the environment?Food produced near to where you live.Food produced far from where you live.It depends.4Which uses less water?Taking a bath.Taking a shower.It depends.Now work in groups and see if oth

3、er people share your ideas.Read the four subheadings in the passage and decide if they are true or false.Then read the passage and check your answers.Learning to learnAs subheadings expand on the main heading or title，they can be slightly longer than the main heading.Although not every paragraph nee

4、ds a subheading，they can be skimmed to give the reader an overall understanding of the content of a text.Whats really green?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”ha

5、ve been shown to be only half true，or even completely false.Here are some common ones.Which are really green?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，bu

6、t 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 the amount of water.The process also produces more greenhouse gases.In fact，both kinds of bag

7、s are bad for the environment.So，take a reusable bag with you when you go shopping.?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 h

8、appens because electricity continues to leak 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.?Eating local food is good for the environment.It seems like common sense：eating local food should be better for the environment，b

9、ecause 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 greenhouse gases.In some cases，local produce might have used more energy an

10、d produced more greenhouse gases than produce grown a long way awayeven taking into account its transport.?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，youll use as much water as in

11、a bathabout 50 litres of water.Therefore，the key is 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.Read the effects and complete the causes of these according to the passage.1M

12、aking a paper bag uses more energy and water than making a plastic bag.It also produces more greenhouse gases.Paper bags are not good for the environment.234Turning off a device wont stop it from using power.Eating local food isnt always better for the environment.Its not always better to take a sho

13、wer than a bath.Devices turned off go into stand-by mode and still use power.Local produce sometimes might use more energy and produce more greenhouse gases than produce grown a long way awayeven taking into account its transport.If you spend more than eight minutes in a shower，youll use as much wat

14、er as in a bathabout 50 litres of water.Think&Share1Which of the“green truths”surprises you most?Give your reasons.2Are you aware of any other“green truths”that are not true?Share them with the class.3How“green”are you?Share your“green actions”with the class.4What can you do to become“greener”?When

15、you turn off a device，it stops using power.Usually I just turn off my television before going out，thinking it is a safe and green way.I dont know its still a waste of energy.Bike-sharing is a green method of transportation and provides a user-friendly experience.However，it causes the energy to be wa

16、sted if the bikes are thrown away by the roadside.I usually try to save energy and water in my daily life.For example，I always turn off the lights when I leave a room.I walk or ride a bike instead of taking a bus or a taxi.I take a cloth bag when I go shopping.I can stop using the things that can be

17、 used only once.I can unplug the TV set before I go out.I can stop people from producing power from coal.Work in groups.Give a talk about one of the“green truths”in the passage.1Use these questions to help plan your talk.Which“green truth”are you going to talk about?Why do people believe it is“green

18、”?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”.

19、3Give your talk to the class.Im going to talk about one of the“green truths”Paper shopping bags are better than plastic ones.As we all know，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 f

20、or paper.Because of this，we 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 the amount of water.The process also produces more greenhouse gases.In fact，both kinds of bags are bad for the envi

21、ronment.So，why not take a reusable bag to become“greener”when going shopping?Read the letter and answer the questions.Writing a persuasive letterDear Friends，We are writing this letter to call on everyone to take part in the Clear Your Plate campaign.It urges people to save food by not wasting anyth

22、ing on the dining table.You may not know over 30%of the worlds food is wasted，while many people in poor areas do not have enough to eat.In order to save food，we propose：1Do not order more than you need in the school canteen.2Order less and take leftover food home when dining in restaurants.3Call on

23、family members and friends to take part in the campaign.Reducing daily food waste by just 5%could save millions of people from starvation.Lets start doing what we can to make the world a greener，cleaner place!With best wishes，Class 81What is the purpose of the letter?2What is the existing problem?3W

24、hat are the proposed actions from Class 8?The purpose of this letter is to call on everyone to take part in the Clear Your Plate campaign.Over 30%of the worlds food is wasted，while many people in poor areas do not have enough to eat.Do not order more than you need in the school canteen；order less an

25、d take leftover food home when dining in restaurants；call on family members and friends to take part in the campaign.Problem：Cause（s）：Solution（s）：Now write a persuasive letter.Use the expressions in the box tohelp you.Work in groups.Discuss another environmental issue about whichto write a persuasiv

26、e letter and make notes.Share your letter with the class.Useful expressions We are writing this letter to raise your awareness of.We are concerned that.We would like to suggest.We hope that you will consider.One of the reasons for this is.In order to improve the situation，we should.Dear Friends，We a

27、re writing this letter to raise your awareness of the need to protect our planet.You can help simply by participating in the No Bottled Water campaign.People tend to think bottled water is cleaner and more convenient.However，they may not know that according to scientific research，millions of tons of

28、 plastic is used worldwide to make water bottles each year.The plastic can take hundreds of years to break down.If you are worried about the effects of bottled water on the Earth，we would like to suggest you take the following steps：1 Carry your water in a sustainable，reusable bottle.In this way，you

29、 dont need to buy bottled water.2 If you have to purchase a plastic bottled beverage，recycle the bottle after use.3 Call on your family members and friends to take part in this campaign.Everyone is responsible for making our planet cleaner and better by doing what we can.Lets start NOW.With best wis

30、hes，Class 11Presenting ideasWork in groups.Look at the three items that contribute to a carbon footprint.Add any more you can think of.rubbish，smoking，printingCreate a carbon footprint survey.Think of two questions and possible answers for each topic.Give each answer a score from 1（a low carbon foot

31、print）to 3（a high carbon footprint）.Carry out the survey and use the results to come up with ways to reduce carbon footprint.Carbon footprint survey1How often do you walk，cycle or take public transport to school?Never（3）One to three times a week（2）Almost every day（1）.Useful expressions The average s

32、core of our group is.The results show that.The biggest problem is.Were glad to see that.In order to.，we suggest.Report the results of your survey and your ideas to the class.Use the expressions in the box to help you.ReflectionAfter completing this unit，I can rate my performance 1（excellent），），2（goo

33、d）or 3（in need of improvement）.talk about environmental issues interrupt someone politely write a persuasive letter to raise awareness of an environmental issue challenge views or assumptions and make informed decisions live a greener life at home and at schoolIve learnt to make use of the following

34、 words and expressions：_ _ I still need to improve：_ _高中英语 必修第二册 UNIT 6 Earth first课文思维导图梳理与提示高中英语 必修第二册 UNIT 6 Earth first高中英语 必修第二册 UNIT 6 Earth first 阅读理解（根据课文内容选择正确答案）1.Which shopping bag is more environmentally friendly?A.A plastic bag.B.A paper bag.C.A disposable（一次性的）bag.D.A reusable bag.2.Wh

35、at should you do to save energy when leaving your home?A.Turn off a device.B.Unplug a device.C.Leave a device on.D.Leave a device in a stand-by mode.课文预习自测高中英语 必修第二册 UNIT 6 Earth first3.What food is better for the environment?A.Food produced near to where you live.B.Food produced far from where you

36、live.C.Food needing to be kept cold during transport.D.Food using less energy and producing less greenhouse gases.4.Which uses less water?A.Taking a bath more than 8 minutes.B.Taking a bath in a very large bathtub.C.Taking a shower less than 8 minutes.D.Taking a shower more than 8 minutes.高中英语 必修第二册

37、 UNIT 6 Earth first 语法填空（根据课文内容和语法规则完成短文）Most of us are aware that we must take care of the environment，and the 1（major）of us take steps to save energy and reduce waste and pollution.2recently，some“green truths”have been shown to be only half true，or even 3 （complete）false.Many people think paper sh

38、opping bags are 4 （good）than plastic ones.However，making a paper bag uses more energy and water than making a plastic bag.The process also 5（produce）more greenhouse gases.In fact，both kinds of bags are bad for the environment.So，take a 6（reuse）bag with you when you go shopping.It seems like common s

39、ense that eating local food should be better for the environment，because it does not need to be transported long distances and 7 （keep）cold during transport.In fact，it is the production of food 8uses most of the energy and produces most of the greenhouse gases.Local produce sometimes might use more

40、energy and produce more greenhouse gases than produce 9（grow）a long way awayeven taking into account its transport.Environmental awareness is now part of daily life.But its worth checking common ideas and opinions to see 10is really green.majorityButcompletely betterproducesreusablekeptthatgrownwhat

41、Language points高中英语 必修第二册 UNIT 6 Earth first核心词汇核心词汇 教材原句p.68 .and the majority of us take steps to save energy and reduce waste and pollution.我们大多数人也采取了各种行动节约能源，减 少浪费和污染。1 majority n.多数，大多数（人或物）The majority of the employees have university degrees.大部分雇员都有大学文凭。In the nursing profession，women are in

42、a/the majority.女性在护理行业中占大多数。词汇复现题组练领悟方法高中英语 必修第二册 UNIT 6 Earth first【学法点拨学法点拨】（1）The majority+单数/复数谓语The majority was/were in favour of banning smoking.大多数人支持禁烟。【单词积累单词积累】（1）major adj.主要的，重要的n.主修科目，专业v.主修major in 主修（2）minor adj.小的，不很重要的 minority n.少数，少数派高中英语 必修第二册 UNIT 6 Earth first完成句子完成句子(1)The ag

43、reement seems to be impossible because （大多数成员）are against it.(2)Only（少数的）people in that city do not have a car while thepeople taking the subway to work are（占大多数）.单句语法填空单句语法填空(3)To my surprise，the majority of the students （be）for his proposal.(4)One-third of the country （be）covered with trees and th

44、e majority of the citizens （be）black people.the majority of the membersa minority ofin the/a majorityareisare高中英语 必修第二册 UNIT 6 Earth first2 take steps to do sth.采取措施做某事We are taking steps to prevent pollution.我们正在采取措施防止污染。【归纳拓展归纳拓展】（1）take measures to do sth.采取措施做某事 take action to do sth.采取行动做某事（2）s

45、tep up 使增加，使加快；走上前去 step by step 逐步地 out of step 不合拍，不一致 mind/watch your step 走路小心；言行小心谨慎单句语法填空单句语法填空(1)The wild population of koalas is in danger of dying out，so we should take steps _（protect）them.(2)It is time for us to take measures _（protect）the environment.(3)Jack stepped _ his pace because he

46、 didnt want to be late again.to protectto protectup高中英语 必修第二册 UNIT 6 Earth first教材原句p.68 Plastic bags cause litter and are a danger to wild animals，which mistake them for food.塑料袋会变成垃圾，被野生动物误食后会对其造 成伤害。3 mistake.for.把错当成I think you must be mistaking me for someone else.我想你准是认错人了。【归纳拓展归纳拓展】（1）by mist

47、ake 错误地，无意地make a mistake 犯错admit ones mistake 承认自己的错误（2）be mistaken about.误解；对持有错误的见解高中英语 必修第二册 UNIT 6 Earth first单句语法填空单句语法填空(1)A woman mistook him a well-known actor，and asked him for his autograph（亲笔签名）.(2)Tom must have taken your dictionary mistake.(3)Dont worry.We all make（mistake）.(4)Unfortun

48、ately，I was（mistake）about how much it would cost.完成句子完成句子(5)I took your bag instead of mine （错误地）.forbymistakesmistakenby mistake高中英语 必修第二册 UNIT 6 Earth first教材原句p.68 It takes hundreds of years for plastic to break down，but much less time for paper.塑料需要数百年才能分解，而纸的降解时间要短得多。4 break down（使）分解；出故障；失败；垮掉

49、；消除Food is broken down in the stomach.食物在胃里分解。Our car broke down and we had to push it off the road.我们的汽车抛锚了，我们只好把它推到路旁。Talks with business leaders broke down last night.与商界领导人的谈判于昨晚失败了。Her health broke down under the pressure of work.她因工作压力身体垮掉了。It takes a long time to break down prejudices.消除偏见需要很

50、长时间。【归纳拓展归纳拓展】break up 破碎；解散 break into 强行闯入；突然起来break in 破门而入；打断谈话 break away（from）脱离；逃脱break through 突破 break off 中断；折断break out（战争、火灾等）突然发生，爆发高中英语 必修第二册 UNIT 6 Earth first完成句子完成句子(1)He had to pause from time to time to wipe the sweat from his forehead，because the air-conditioning system（发生故障）.(2)