Unit 6 Period 6 Developing ideas ppt课件-2022高中英语新外研版必修第二册.pptx

1、Unit 6 Earth firstPeriod 4 Developing ideas1.To have a general knowledge of whats really green in our daily life.2.To learn the role and function of sub-titles.3.To learn some key words and expressions in this lesson.Look at the questions about“green living”and tick your answers.1.Which shopping bag

2、 is more environmentally friendly?A plastic bag.A paper bag.Neither of these.Activity 12.What should you do to save energy when leaving your home?Turn off a device.Unplug a device.Neither of these.n.设备，设备，仪器，装置仪器，装置3.What food is better for the environment?Food produced near to where you live.Food p

3、roduced far from where you live.It depends.4.Which uses less water?Taking a bath.Taking a shower.It depends.Look at the title and think about the meaning of it.Activity 2Whats really“green”?A.ColorB.InexperiencedC.Environmental friendlyRead the four subheadings in the passage and decide if they are

4、true or false.Activity 3Paper shopping bags are better than plastic ones.When you turn off a device,it stops using power.Eating local food is good for the environment.Its better to take a shower than a bath.It depends.It depends.Whats the main idea of the passage?Activity 4It discusses some common _

5、 which have been shown to be _or even completely _.“green truths”half truefalseConclusionIntroductionBodygreen truth 1green truth 2green truth 3green truth 4Draw a mind map to show the structure of the passage.Read the effects and complete the causes and measures of these according to the passage.1.

6、Making 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.CAUSESEFFECTSMEASURESTake a reusable bag with youwhen you go shopping.Activity 5CAUSES2.Devices turned off go into stand-by mode and still use po

7、wer.EFFECTSTurning off a device wont stop it from using power.MEASURESRemove theplug from itspower supply.CAUSESEFFECTSMEASURES3.Local produce sometimes might use more energy and produce more greenhouse gases.Eating local food isnt always better for the environment.No suggestions.CAUSES4.If you spen

8、d more than eight minutes in a shower,youll use as much water as in a bath-about 50 litres of water.EFFECTSIts not always better to take a shower than a bath.MEASURESKeep yourshower timeas short aspossible.1.Are you aware of any other“green truths”that are not true?Think ShareActivity 6Are electric

9、cars really“green”?Electric cars run on electricity and they dont burn gasoline at all;therefore they dont emit CO2,thus creating“zero emission”(零排放零排放).Although driving an electric car does not cause any air pollution,the pollution mainly comes from the production of its battery(电电池池)and the electr

10、icity used to keep it running.The production of the electric batteries requires lithium(锂锂).A large amount of energy is used on mining and processing this metal.Meanwhile,the electricity by which electric cars are powered is mainly from burning coal or gas.All of these contribute to carbon emissions

11、.Consequently,electric cars arent really green.2.What can we do to become“greener”?Think ShareActivity 6Use public transportKeep the air conditioner at 26CWork in groups.Give a talk about one of the“green truths”in the passage.PresentationActivity 7Some people think.because.However,its not completel

12、y true because.Therefore/Thus,we should.自主自主Part 2 Page 72-75及对应课时作业及对应课时作业1.It takes hundreds of years for plastic to break down,but much less time for paper.break down:if a substance breaks down or is broken down into parts,it separates into the parts that it is made up of 分解，分化分解，分化eg After many

13、years,rocks break down into dirt.Food is broken down in the stomach.break down还意为：还意为：The plan was good,but it broke down,because people were unwilling to cooperate.We are sorry to arrive late,but the car broke down.Your health will break down if you work too hard.The young woman broke down in tears

14、.（计划、谈判等）失败（计划、谈判等）失败（机器、车辆等）坏了（机器、车辆等）坏了（身体）垮了（身体）垮了感情失控（痛哭起来）感情失控（痛哭起来）【语境运用语境运用】翻译句子。翻译句子。1)电梯坏了，我们不得不走楼梯。电梯坏了，我们不得不走楼梯。The lift breaks down,so we have to walk up the stairs.2)他他听到这个消息时不禁痛哭听到这个消息时不禁痛哭起来。起来。He breaks down when he hears the news.amount n.数量，数额数量，数额a quantity of something such as ti

15、me,money,or a substance2.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.amount v.总计，共达，常与介词总计，共达，常与介词to搭配。搭配。if figures,sums etc amount to a particular total,they equal that total when they are added together【归纳归纳】amounta l

16、arge/considerate/enormous/huge/.amount of 大量的，许多大量的，许多 (修饰不可数名词，谓语动词常用修饰不可数名词，谓语动词常用单数形式单数形式)amounts of 大量的，许多大量的，许多 (修饰不修饰不可数名词，谓语动词常用复数形式可数名词，谓语动词常用复数形式)表示表示“许许多，大量多，大量”可数可数不可数不可数a great/good many,a great/large/good number of,(quite)a few等。等。(quite)a little,a great deal of,a large amount of,large

17、amounts of等。等。plenty of,a lot of,lots of,a mass of,masses of 等等,这时谓语动词的单这时谓语动词的单复数形式取决于它们后面所接名复数形式取决于它们后面所接名词的形式。词的形式。可数名词可数名词复数复数/不可不可数名词数名词【语境应用语境应用】单句语法填空。单句语法填空。1)A large amount of damage _(do)in a very short time.2)Large amounts of money _(spend)on the freeway every year.3)There _(be)a huge amo

18、unt of information on the Internet.was doneare spentis写准核心单词。写准核心单词。4)Today$8 or$10 seems a small_(数数量量)of money,but at that time these amounts were forbidding to most citizens.(2019全国卷全国卷III)amount3.To make sure your appliance is in fact off,remove the plug from its power supply.remove v.to take so

19、mething away from,out of,or off the place where it is 移走移走;搬走搬走;去掉去掉 to get rid of something so that it does not exist any longer 清除，除去清除，除去eliminate or get rid of(someone or something)除去，除掉除去，除掉dismiss from a job or office免职，解雇免职，解雇to take off a piece of clothing 摘掉摘掉;脱掉脱掉【归纳】【归纳】remove.from 把把从从移开

20、移开remove from.to.从从搬到搬到remove sb.from school 开除开除;勒令某人退学勒令某人退学remove ones doubt/trouble 消除某人的疑虑消除某人的疑虑 /烦恼烦恼【语境应用语境应用】写出下列句中写出下列句中remove的含义。的含义。1)If a nest has four eggs and you remove one,the bird will not notice.2)He removed his jacket when he arrived home.3)He was severely criticized and removed

21、from his post.4)The agreement removes the last serious obstacle to the signing of the treaty.5)Three children were removed from the school for bad behaviors.消除消除拿走拿走撤职撤职脱掉脱掉开除开除 move,transfer,remove 这些动词均可表从一处移往另一处之意。这些动词均可表从一处移往另一处之意。move:普通用词普通用词,指从一处到另一处转移。指从一处到另一处转移。transfer:一般表示转送一般表示转送/移交或迁移移交

22、或迁移,尤指交通运输中尤指交通运输中的换乘或职务的调动等。的换乘或职务的调动等。remove:移动移动,与与move可换用可换用,还可指撤职或开除学藉还可指撤职或开除学藉等。等。4.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.produce v.生产；创作；生长生产；创作；生长to grow something

23、or make it naturally;to make,write etc something to be bought,used,or enjoyed by peopleeg Their factory produces 500 bikes a day.He has produced a lot of songs in the past ten years.The tree produces much fruit each year.produce u.n.农产品农产品eg They provide us with fresh produce every day.produce,produ

24、ct与与productionproduce u.n.农产品农产品product c.n.产品，制品产品，制品production u.n.生产行为，产量生产行为，产量【语境运用语境运用】用用produce,product,production的适当形式填空。的适当形式填空。1)We must _ more food for ourselves and import less.2)Farmers brought their _ to town early each Saturday morning.3)The river has been polluted by waste _ from the factory.4)We will encourage the _ of excellent cultural works.produceproduce productsproductiontake into account 把把考虑进去考虑进去eg She seemed not to take the rising oil prices into account when buying a car.