2020-2021学年新教材英语外研版（2019）必修第二册课件：UNIT 6 EARTH FIRST DEVELOPING IDEAS .pptx

1、uPeriod 4 Developing ideas Developing ideas(P68-69)Lead-inLook at the questions about“green living”and tick your answers.Fast-reading Read the subheadings in the passage and decide if they are true or false.Subheading 1 Paper shopping bags are better than plastic ones.Subheading 2 When you turn off

2、a device,it stops using power.Subheading 3 Eating local food is good for the environment.Subheading 4 Its better to take a shower than a bath.FFFFIt depends.It depends.It depends.It depends.Detailed-reading Truth SuggestionsSubheading 1In fact,both kinds of bags are bad for the environment.Subheadin

3、g 2 Subheading 3Subheading 4To make sure your appliance is in fact off,remove the plug from its power supply.The key is to keep your shower time as short as possible.Take a reusable bag with you when you go shopping.When you turn off a device,it goes into stand-by mode and still uses power.In some c

4、ases,local produce sometimes might use more energy and produce more greenhouse gases than produce grown a long way away.No suggestionsIt depends on how long you spend in the shower and how large your bath is.SummarySummary Most of us are _(awareness)that we must take care of the environment,and the

5、mojority of us take steps _(save)energy and reduce waste and pollution.But in fact,some long-held common sense turns out only half true,or even _(complete)false.For example,people think paper bags are _(good)than plastic bags as they are easier to break down than the plastic _(one).The process of ma

6、king paper bags,_,is more energy consuming and water wasting.So,take a reusable bag with you when shopping.Besides,remove the plug from its power supply,_ the stand-by mode still use power.Eating local food isnt necessarily good for the environment,even taking transportation _ account.Some take it f

7、or granted _ a shower consumes less water than a bath.But that depends _ how long you spend in a shower.The best policy is to keep your shower as short as possible._(environment)awareness is now part of daily life.But its worth _(check)common ideas and opinions to see whats really green.awareto save

8、completelybetteroneshoweverbecauseinto thatonEnvironmental checking(1)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.我们大多数都意识到我们必须爱护环境，且多数人采取措施节约能源，减少浪费及污染。【知识链接】be aware that意识到+句子；be aware of+名词/代词 n.aw

9、areness 提高某人的意识_ the majority of people大多数人 major in_ take steps to do采取措施做【实战演练】大多数人已经意识到环境保护的重要性。首先，我们应该提高人们保护环境的意识。更重要的是，我们应该采取措施来解决环境污染问题。(2)Plastic bags cause litter and are a danger to wild animals,which mistake them for food.塑料袋会产生垃圾，同时对野生动物来说是一种威胁，它们会把塑料袋误当作食物。【知识链接】mistake A for B把A误认为B.by

10、mistake错误地；由于疏忽【实战演练】他由于疏忽，错把珠宝当作了垃圾。raise sbs awareness主修The majority of people have been aware of the importance of environmental protection.First,we should raise peoples awareness of protecting the environment.More importantly,we should take steps to deal with the problem of environmental polluti

11、on.He mistook treasure for rubbish by mistake.(3)It takes hundreds of years for plastic to break down,but much less time for paper.塑料分解需要几百年的时间，但纸张分解的时间要短得多。【知识链接】break down:分解；（和谈）失败；(身体)等垮了。其它短语：(火灾，战争)爆发_闯入_ 关系破裂_(4)However,making a paper bag uses four times as much energy as making a plastic bag

12、 and up to three times the amount of water.然而，制造一个纸袋所消耗的能源是制造一个塑料袋的四倍，用水量多达制造塑料袋的三倍。这个过程中也会产生更多的温室气体。【知识链接】倍数表达：倍数+as much(不可数名词)/many(可数名词)+as;up to意 义：多 达；Its up to you._ What are you up to?_;amount还可以作为v.amount to总计；共达【实战演练】a.完成这个项目用了那个项目2倍多的时间。其费用共达200万。(5)So,take s reusable bag with you when yo

13、u go shopping.所以，购物时随身携带一个可以重复使用的袋子。Finishing this program used twice as much time as that one.Its cost amounted to 2 million.break outbreak intobreak up由你决定你在忙什么？He was removed from the position as chairman.(6)To make sure your appliance is in fact off,remove the plug from its power supply.要确保您的设备实

14、际上已关闭，拔掉电源插头。【知识链接】removefrom将从移开；免去某人的职务；remove gloves摘下手套；remove problems解决问题【实战演练】a.他被撤去作为主席的职务。(7)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 cold during transport.这似乎是常识：吃当地食物应该对环境更好，因为它不需要长

15、途运输，并且在运输过程中保持低温。【知识链接】common sense 常识；sense其它短语：方向感_ 有意义_弄明白_(8)It is the production of food,not its transport,that uses most of the energy.消耗大部分能源和产生大部分温室气体的是食品生产。【知识链接】强调句构成：It is(was)+被强调部分+that(强调人可以用who)+句子其它【实战演练】正是塑料袋带来了白色污染。a sense of directionmake sensemake sense ofIt is plastic bags that

16、bring about white pollution.(9)In some cases,local produce might have used more energy and produced more greenhouse gases than produce grown a long way awayeven taking into account its transport.在某些情况下，即使考虑到农产品的运输，当地农产品比生长在很远的地方的农产品可能消耗更多的能源，产生更多的温室气体。【知识链接】a.may/might have done 表示对过去情况的推测，用在肯定句或否定句

17、中，might的语气比may更不肯定,更弱。He may/might have left when you got there.b.grown a long way away是过去分词短语作后置定语，可以改写成定语从句：_c.takeinto account=take account of 考虑到，把考虑在内 takeinto consideration 考虑到，把考虑在内 taking into account 为现在分词的独立主格形式，也称为悬垂分词，不受句子 主语的限制，类似的结构还有:generally speaking,strictly speaking,talking of,spe

18、aking of,judging from/by,taking all things into account,consideringeg:Taking his age into account,we shouldnt request too much from him.【实战演练】考虑到他的年龄，我们不该对他要求太多。.than produce which is grown a long way away.Taking his age into account,we shouldnt request too much from him.(10)It depends on how long y

19、ou spend in the shower and how large your bath is.【知识链接】a.depend on=rely on 依靠,依赖,取决于b.depend on 的使用：depend on sb/sth depend on sb.to do sth.depend on+宾语从句 depend on it that it all depends.看情况定【实战演练】你的成绩取决于你对学习的态度。(11)But its worth checking common ideas and opinions to see whats really green.这取决于你花在

20、淋浴上的时间，以及你的浴缸有多大。但是值得核实一下常见的想法和观点。Your grades depend on your attitude to study.This book is worth reading again.Think&Share1.How“green”are you?Share your“green actions”with the class.2.What can you do to become“greener”?Complete the sentences according to the Chinese in brackets.Complete the sentenc

21、es according to the Chinese in brackets.1 Reusing items saves energy,prevents pollution and _(减少垃圾数量)that you create.2 Buying products like _(二手家具和书籍)helps you save money as well as space.3 Try to buy items that are reusable,such as rechargeable batteries and _(可重复利用的购物袋).4 If something breaks or st

22、ops working,get it fixed instead of throwing it away.Better still,_(学着自己修).5 Dont buy things that you only need occasionally,such as tools,sports equipment or vehicles _(借或者租)instead.6 When you no longer need something,think about _(捐给慈善机构)or selling it so that someone else can use it.7 _(吃剩的食物)can

23、easily be made into a soup.8 _(运用你的想象力)and make old magazines and newspapers into art or greeting cards.9 Plastic bottles _(可以被改造成)plant pots,while glass jars can be used as vases.10 _(完好无损的衣服)can be given to charity to be reused.reduces the amount of rubbish/garbagesecond-hand furniture and booksreusable shopping bagslearn to repair it by yourselfborrow or rent themdonating it to the charityThe leftoversMake use of your imaginationcan be made intoClothes in good conditionHomeworkWrite a short paragraph about“What can we do to become a greener”within 80 words.