高中英语外研版 (2019)必修 第二册Unit 6 Earth first优质课件ppt

这是一份高中英语外研版 (2019)必修 第二册Unit 6 Earth first优质课件ppt，文件包含高中外研版英语新教材必修第2册Unit6第03讲UsinglanguageDevelopingideaspptx、高中外研版英语必修第2册讲义Unit63UsinglanguageDevelopingideasdocx等2份课件配套教学资源，其中PPT共51页， 欢迎下载使用。


Unit 6　Earth first
Period Three　Using language & Developing ideas
PART 1
语篇理解
PART 2
基础自测
PART 3
互动探究
PART 4
达标检测
PART1
语篇理解
精读精练 萃取文本精华
Ⅰ.Read the passage and judge whether the following sentences are true(T) or false(F).1.It takes hundreds of years for paper to break down，but much less time for plastic.( )2.When we turn off a device，it won’t use electricity.( )3.The production of food uses more energy than the transport and produces more greenhouse gases.( )
F
F
T
Ⅱ.Read the passage carefully and choose the best answer.1.What’s the main idea of the passage?A.What steps we should take to save energy and reduce waste and pollution.B.What’s really green in our daily life.C.How we can live a green life.D.When we turn off a device to stop using power.
√
2.Which shopping bag is more environmentally friendly?A.A plastic bag. B.A paper bag.C.A reusable bag. D.None of these.
√
3.What should you do to save energy when leaving your home?A.Turn off a device.B.Unplug a device.C.Remove the device from the house.D.Leave the device on.
√
4.What food is better for the environment?A.Food produced near to where you live.B.Food produced far from where you live.C.Food produced at home.D.It depends.
√
5.Which uses less water?A.Taking a bath. B.Taking a shower.C.Neither of these. D.It depends.
√
PART 2
基础自测
自主学习 落实基础知识
Ⅰ.重点单词1. v. 减少，降低2. v. 释放，排放3. n. (尤指大学里的)讲座，讲课，演讲4. n. 多数，大多数(人或物)5. n. 数量，数额6. n. 设备，仪器，装置7. n. 电8. v. 移走，搬走，去掉9. n. (宣传)活动
reduce
release
lecture
majority
amount
device
electricity
remove
campaign
10. adj. 平均(数)的11. n. 雾 → adj. 多雾的；有雾的12. n. 感染，传染病 → v. 传染 → adj. 传染的；传染性的13. n. 允许，许可 → v. 允许；许可 n. 许可证14. v. 竭力主张，强烈要求，敦促 → adj. 紧急的；急迫的
average
fog
foggy
infection
infect
infectious
permission
permit
urge
urgent
15. adj. 焦急的，担忧的 → v. 担忧；涉及 n. 担忧16. v. 促成，造成(某事发生)；贡献，捐献 → n. 贡献
concerned
concern
contribute
contribution
掌握规律　巧记单词fog n.雾＋y→foggy adj.多雾的；有雾的sun＋y→sunny adj.晴朗的fur＋y→furry adj.毛皮覆盖的，毛茸茸的fun＋y→funny adj.滑稽的；有趣的
Ⅱ.核心短语1. 采取措施2. 把……误当做……3. 分解；出故障；谈判失败；(健康、精神等)垮掉4. 关上5. 常识6. 把……考虑进去7. 把……从……移开8. 依靠；依赖9. 与……分享……10. 号召
take steps
mistake...for...
break down
turn off
common sense
take...into account
remove...from...
depend on
share...with...
call on
Ⅲ.经典句式1.It takes...for sb. /sth. to do...某人/某物花费多长时间做某事 ，but much less time for paper.塑料要用去数百年的时间才分解掉，但是纸用的时间少一些。2.倍数的表达方法However，making a paper bag uses making a plastic bag and up to .然而，造一个纸袋要用造一个塑料袋四倍的能量和多达三倍的水。
It takes hundreds of years for plastic to break down
four times as much energy as
three times the amount of water
3.It is/was...that/who...强调句型 uses most of the energy and produces most of the greenhouse gases.恰是食物的生产，而不是运输耗用了大量的能量并产生了大量的温室气体。4.状语从句的省略Order less and take leftover food home .在饭店吃饭时少点菜并把剩菜带回家。
It is the production of food，not its transport，that
when dining in restaurants
PART 3
互动探究
探究重点 互动撞击思维
reduce vt.减少；减缩
1
Reduce waste by choosing reusable products.通过选择可再利用的产品减少浪费。
reduce sth. to...减少到……reduce sth. by...减少了……reduce sb. to (doing) sth. 使陷入(更坏的)境地；使沦落为
重点词汇
(1)Having enough fat and salt in your meals will reduce the urge to snacks between meals and will improve the taste of food.膳食中有足够的脂肪和盐会减少饭后吃零食的欲望，并会提高你的食欲。(2)It was foggy so the driver forty kilometres an hour.由于大雾，司机不得不把速度减到每小时40千米。(3)If you buy more than ten, they the price by 10 percent.如果你买10个以上，他们就会把价格降低10%。
will reduce
had to reduce speed to
注意：reduce“减少”的近义词是decrease，反义词是increase, rise(增加)。这三个词与reduce用法一样，后可接to...表示增减的结果，接by...表示增减的幅度。(4)Their salary has been increased by 20 percent since last year.自去年以来，他们的工资已经增长了20%。
2
A polite interruption is usually framed as a request for permission to interrupt someone.礼貌的打岔通常表达为允许打断某人说话的一种请求。
※ask for (one’s) permission请求(某人的)允许 with/without permission允许/未经允许※permit vt.允许；许可；准许 n.许可；执照；通行证；许可证 permit sb. to do sth. 允许某人做某事 permit doing sth. 允许做某事
permission n.许可；允许
(1)You’d better ask for the teacher’s permission to leave before you go.在你走之前，你最好请求老师准许。(2)It’s illegal to read people’s private letters without (permit).未经允许看别人的私人信件是不合法的。(3)My father permitted me (dive) in the ocean to experience the underwater world.爸爸允许我去海洋潜水，去体验一下水下世界。(4)We don’t permit (smoke) in the office as more women work here.因为办公室女士比较多，我们不允许在办公室抽烟。(5)Weather (permit)，we will go on a picnic this afternoon.如果天气许可，今天下午我们去野餐。
permission
to dive
smoking
permitting
3
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.我们大部分人都意识到我们必须照顾环境并且采取措施来节约能源和减少浪费和污染。
※in a/the majority占大多数 by/with a majority以多数※major adj.主要的；重要的 vi.主修 n.主修课程；主修学生 major in主修……※minority n.少数 in the/a minority占少数
majority n.大多数；大部分
注意：(1)majority作主语时，若侧重于整体，谓语动词用单数形式；若侧重于个体成员，谓语动词用复数形式。(2)the/a majority of后跟可数名词复数形式作主语时，谓语动词通常用复数；后跟单数或不可数名词作主语时，谓语动词通常用单数。(1)In the nursing profession，women are in a/the majority.女性在护理行业中占大多数。(2)Declining birth rate is a major problem in many developing regions too.出生率降低也是很多发展中地区的主要问题。
(3)If you look at the audience at a classical concert，the (major) is over the age of fifty.如果你看一下古典音乐会的观众，(你会发现)多数是超过50岁的人。(4)The majority of the damage (be) easy to repair.大部分损坏很容易修复。
majority
is
4
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.然而，造一个纸袋要用造一个塑料袋四倍的能量和多达三倍的水。
※“a large amount of＋不可数名词”作主语时，谓语动词用单数。 “large amounts of＋不可数名词”作主语时，谓语动词用复数。※amount to总计为……
amount n.数量
(1)People in disaster areas have had a large amount of help from people all over the world.灾区人民得到了全世界人们的大量帮助。(2)A large amount of damage (do) to the city in a very short time.在很短时间内，这个城市遭受了大量的破坏。(3)The cost of the book amounted ￡250，which is too much for me to afford.这本书的费用共达250英镑，对我来说太贵了支付不起。
has been done
to
注意：表示“大量的”短语还有a large number of，a great deal of，a lot of，plenty of，a large quantity of 等。①a large number of只能修饰可数名词复数；②a great deal of只能修饰不可数名词；③a lot of, plenty of, a large quantity of既可以修饰可数名词，也可以修饰不可数名词。
5
To make sure your appliance is in fact off，remove the plug from its power supply.为了确保你的家用电器实际上已关闭，请把插座拔掉，停止供电。
remove...from...把……从……移开remove sth. into/out of把某物搬入/搬出remove sb. from school (学校)开除某人remove one’s doubts/trouble消除某人的疑虑/烦恼
remove vt.移动；搬开；消除；把……免职；撤去
(1)The busy work has removed the workers from the homesickness.繁忙的工作缓解了工人们的思乡之情。(2)The man (remove) from the post because he broke the rules and regulations of the company by design.这个人由于故意违反公司的规章制度而被开除了。(3)In order to ，we told him all the truth.为了消除他的疑虑，我们告诉了他所有的真相。
was removed
remove his doubts
[图解助记]　对比记忆remove与move
6
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.在某些情况下，当地的农产品可能比远方的农产品消耗更多的能源，产生更多的温室气体，即使把运输考虑进去也是如此。
※on account of由于；因为 on no account决不(放在句首时句子用部分倒装)※account for解释或说明……的原因；总共有(占)
take ...into account把……考虑或计算在内；考虑……
(1)We should take his health into account and then make a decision.我们应该把他的健康状况考虑进去，然后再做决定。(2) should the soldiers be blamed for what happened.士兵们绝对不该为所发生的事受到责备。(3)His illness his absence from the meeting.他因为生病而缺席会议。
On no account
accounts for
7
It urges people to save food by not wasting anything on the dining table.它敦促人们通过不浪费餐桌上的任何东西而节约食物。
urge sth. /sb. on催促某物/某人前进urge sb. to do sth. 催促某人做某事urge that ...(should) do sth. 极力主张/强调……做某事It is urged that ...(should) do sth. 坚决要求……做某事。
urge vt.敦促；竭力主张；强烈要求
(1)She could hear him urging her on as she ran past.当她跑过去时，她能听到他在为她加油。(2)He urged us (go) at once.＝He urged that we (go) at once.他催促我们立刻走。
to go
(should) go
8
We are concerned that...我们担心……
※be concerned about/for关心…… as/so far as...be concerned就……而言※concern vt.(使)担忧；涉及；关系到 n.担心；关注；(利害)关系 concern oneself about...关心…… concern oneself in...介入/卷入…… have no concern with...和……无关 show concern for...对……表示关心
concerned adj.关切的；担心的
(1)He called the police because he was concerned for/about Mary’s safety.他担心玛丽的安全，就打电话报了警。(2) , the more you practise paper-cutting, the better you will become.就我个人而言，你剪纸练习得越多，你就会越擅长。(3)Since there is always heavy fog, many people begin to ___________________ air pollution.因为大雾经常发生，很多人开始关心空气污染问题。(4)Honestly speaking, I have no concern the matter.诚实地说，我与那事无关。
As far as I’m concerned
concern themselves
about
with
9
Look at the three items that contribute to a carbon footprint.请看这三项促进碳足迹的物品。
※contribute to有助于；促使；导致 contribute...to...向……捐献/捐赠……※contribution n.贡献；捐款 make a contribution/contributions to (doing) sth. 对……作出贡献
contribute vi.促成，造成 vt.捐献；贡献；捐助
(1)It was his carelessness that contributed to the accident.正是他的粗心大意造成了这起事故。(2)Everyone is willing the homeless people.每个人都愿意为无家可归的人捐献食物和衣服。(3)Participating in the contest will be a golden chance for me to show my dancing skills and make some (contribute) to the class.参加比赛对我来说是一次难得的展示我的舞蹈才能的好机会，并对班级作出贡献。
to contribute food and clothes to
contributions
注意：表示“引起；导致；有助于”的词语还有cause, lead to, result in，bring about等。
10
The average score of our group is...我们小组的平均得分是……
an average of平均(后跟数词)on (the) average平均起来above/below (the) average在平均水平以上/以下
average adj.平均的；普通的 n.平均数；平均水平；一般水准
(1)40 hours is a fairly average working week for most people.对大多数人来说，一周工作40小时是相当正常的。(2)Men lose average of 3－4 cm in height as they age, while women may lose 5 cm or more.随着年龄的增长，男士的身高平均减少3－4公分，而女士可能减少5公分或更多一些。(3)Last year was the warmest year on record, with global temperature 0.68℃ .去年是有史以来最暖和的一年，全球温度比平均值高出0.68摄氏度。
an
above the average
1
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.然而，造一个纸袋要用造一个塑料袋四倍的能量和多达三倍的水。
“four times as...as；three times the amount of...”为倍数表达法。,倍数的表达法：※倍数＋as＋adj./adv.原级＋as...※倍数＋比较级＋than...※倍数＋the＋名词(size，length，width，height，weight...)＋of...※倍数＋what从句
经典句式
(1)This building is five times as high as that one.这座楼是那座楼的五倍高。(2)People’s average income is almost five times they earned ten years ago.人们的平均收入几乎是十年前的五倍。(3)The newly-broadened square is the previous one.新扩建的广场是未扩建时的四倍大。(4)The number of students in our school is than theirs.我们学校学生的人数是他们学校学生人数的三倍。
what
four times the size of
three times larger
2
Order less and take leftover food home when dining in restaurants. 在饭店吃饭时少点菜并把剩菜带回家。
when dining in restaurants是“连词＋分词短语”结构，是状语从句when you are dining in restaurants的省略形式。当when， while， before， after， unless， as if等状语从句中的主语与主句主语一致或从句的主语为it，且从句谓语中含有be动词时，省略从句中的主语和be动词。省略后从句的形式：连词＋形容词/副词/现在分词/过去分词等。
(1)While (I was) waiting for the bus, I met an old friend.在等公共汽车时，我遇到了一个老朋友。(2)While (play) with his children outdoors, the father felt very happy.当和孩子们在户外玩耍时，这位父亲感到非常幸福。(3) ，you can send an email to 123456@ sina.com.如果对它感兴趣，你可以发送电子邮件到123456@sina.com.(4)When ，you can look up the word in a dictionary.必要的时候你可以在词典里查这个单词。
playing
If interested in it
(it is) necessary
PART 4
达标检测
当堂检测 基础达标演练
1.As far as I’m (concern), I can’t agree with what you said.2.Obviously, the ship set out on its voyage without (permit) last night.3.Large amounts of money (spend) on the bridge last year.4.One must take the audience account when making speeches.5.I persuaded the shopkeeper to reduce the price of the dress 300 yuan.6.He has made an important (contribute) to the company’s success.7. average, American firms remain the most productive in the world.8.The people in the earthquake-stricken area are in (urge) need of food, medicine and shelters.
Ⅰ.单句语法填空
concerned
permission
into
to
contribution
On
were spent
urgent
9.Mrs Zhang, who is our new teacher, we all like her.张老师，我们的新老师，非常关心我们以至于我们都喜欢她。10.The poor weather the small crowd.天气不好可能是来的人少的原因。11. his books，he found the old photo.当寻找他的书时，他发现了那张老照片。12.The newly-built reading-room is the old one.新建的阅览室是旧阅览室的三倍大。
Ⅱ.完成句子
is so concerned about us that
may have accounted for
While/When (he was) searching for
three times bigger than
下面是根据课文内容写的一篇60词左右的内容概要，请根据括号内的汉语提示完成短文。In our daily life,13. (我们过去认为绿色环保的事情) has been shown to be only half true or even completely false.14.________ (人们认为纸袋比塑料袋更环保).In fact，both kinds of bags are bad for the environment.You are wrong to think 15. (当你关上一个设备时) it will stop using power.So you should unplug it when you leave home.What’s more,16.___ (食物的生产消耗的能量更多) rather than transport of food.Which is better to the environment to take a shower or a bath？
Ⅲ.课文缩写——概要写作
what we used to think green
People
think paper bags are better environmental than plastic ones
when you turn off a device
the
production of food uses more energy
17. (那要取决于你淋浴多长时间) and how large your bath is.
It depends on how long you spend in the shower