高中英语人教版（新课程标准）选修6【全单元教学课件】 Unit 4 Global warming
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| 名称 | 高中英语人教版（新课程标准）选修6【全单元教学课件】 Unit 4 Global warming |  | |
| 格式 | zip | ||
| 文件大小 | 5.9MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2018-04-19 08:22:18 | ||
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课件127张PPT。Warming upSpeaking and Listening From the following pictures, you will
know where all this energy comes from.windmillsa coal power stationan oil refinerya nuclear power plantsolar panelshydro-electric damListeningLi Bin is interviewing Professor Keeling about using different sources of energy. Read the statements below and tick the ones you agree with.1. Listen to Part 1 and decide which statements Professor Keeling does NOT agree with.
We should stop depending on fossil fuels for our energy.
2. 90% of our energy comes from fossil fuels.Agree Agree 3. We can replace fossil fuels with cleaner
sources of energy.
4. Nuclear power is a good source of
energy.Disagree Disagree We should stop depending on fossil
fuels for our energy.
2. 90% of our energy comes from
fossil fuels.
3. We can replace fossil fuels with
cleaner sources of energy.
4. Nuclear power is a good source of
energy.2. Listen to Part 1 again and tick the energy sources that are mentioned. Complete the notes on them.Produce carbon dioxide
cheap and concentrated form of energyclean
not very practical with present technologydoes not produce carbon dioxide
dangerousclean
not practical: need huge areas of land to provide enough energy3. Listen to Part 2 and then list three things we can do to save energy. First we must try to find ways to use fossil fuels that does not put carbon dioxide into the air.
Second we must produce products that are economical with energy.
Third we must ask people to cut down on the energy they use.4. Listen to part 2 again and fill in the blanks.LI BIN: … What about ________? They don’t cut down on their use of ______.energyfactoriesKEELING: No, they don’t. However, that is a ________ we must work on as a ______ community. That means _________ and __________ countries will have to work together.problemglobaldevelopeddevelopingLI BIN: But it’s not the __________ countries that put most of the carbon _______ into the air. The developed countries are really the ones to ______.developingdioxideblameRenewable or non-renewable?Renewable or non-renewable?What is told in the picture?Sample listslightheatingcoalnon-renewableoilnon-renewabletelevision cassette player video recorder computer natural gasnon-renewable wind (wind power)renewable sun (solar energy)renewable uranium (nuclear energy)non-renewable fridgestovewashing machinehairdryerwater (hydro-electric)renewableplant waste (biomass energy)renewablehot springs or geysers (geothermal energy)renewablethe sea (tidal energy)renewableReading???????? GreenhouseWhat is the greenhouse made and used for? A greenhouse is made of glass
and is used for growing plants,
especially during cold weather.How does it work?
The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow
throughout the
cold period.What are the “greenhouse gases”?
In the atmosphere surrounding the earth there are gases called “greenhouse gases”, including carbon dioxide, methane (甲烷, 沼气) and water vapor.What do you think greenhouse gases do?
They trap the heat of the sun and keep the air surrounding the earth warm. (Paragraph 1)Introduce a debate over the issue of global warming. Raising a question(Paragraphs 2---3) Illustrate how global warming comes about.Giving examples, using graphs, explanation. (Paragraphs 4---5) List two different attitudes among scientists towards global warming.Giving examples, making contrast. (Paragraph 6) It’s up to readers to think and decide whether people should do something about global warming or not.Using a question, leaving readers to think over the issue. Careful readingRead the text carefully and fill in the blanks.gasesquantities ofglobal temperaturecatastrophehigh levels consequencesStatespositiveII. Choose the best answer.
1. The first graph in the text is used to ________.
attract readers’ attention
B. introduce the topic of global warming
C. act as an example
D. support the opinion and make it more convincing2. The author probably agrees that ________.
global warming is good for us
B. we can do nothing about global warming
C. catastrophes will happen if the globe keeps on warming
D. much remains to be found out about the effects of global warmingPost reading Answer the questions.
Who wrote the magazine article?
What is the name of the magazine?
Sophie Armstrong wrote the magazine article. The name of the magazine is Earth Care. 2. What are the names of the three scientists mentioned in the article?
They are Dr. Janice Foster,
Charles Keeling and George
Hambley.3. What do they think about global
warming? Do they agree with one
another?
There are some very different attitudes among scientists towards this issue. Some think the effects will be terrible, while some others believe that we should not worry about it. Graph I shows the temperature increase of one degree Fahrenheit between 1860 to 2000.4. What are the two graphs about?Graph 2 shows the carbon dioxide content
in the atmosphere from 1957 to 1997.5. What is the main topic of the article?
Global warming/ the warming of the earth.1. The temperature in the last century did not seem to increase much.
2. Everyone believes that global warming is caused by the activities of humans.
3. Janice Foster believes that she can measure the future global rise in temperature.4. The rise in carbon dioxide is causing a
steady increase in global warming.
5. George Hambley believes that global
warming will do good rather than
harm to the earth.
6. It is clear what the effects of global
warming will be.We should do nothing about the global warming.Debate
Instructions
● Get into groups of six. Decide which three in your group are going to agree with the statement (Group A) and which three are going to disagree with the statement (Group B).● Group A discuss why they agree with the statement; Group B discuss why they disagree.
● Group A and B get together. Tell each other the reasons for agreeing or disagreeing with the statement.Supplementary materials for debating
Global warming
1. The planet has warmed anywhere
from 0.5 to 1.0°C (1 to 2°F) over
the last century. This small amount makes a huge difference, causing glaciers to melt and, potentially (潜在的), sea level to rise. We could see even more of this in the future, (maybe another 3°C, or 5°F)2. A definition of global warming would have to include a measurable, consistent temperature rise, like the one we have seen in recent history. A question remains – Is it an unusual change? Much debate about that one.3. The earth gets one kind of energy (visible light) from the sun and gives off another kind (infrared红外线). This kind is what gets trapped by “green house gases” (GHG’s) in the atmosphere.Green house gases
4. The global warming green house effect really is a bogus (假的) term. A greenhouse keeps warm by physically trapping the air inside and preventing convection (对流). The atmosphere helps keep the planet warm by trapping outgoing radiation instead.5. The leading gasses are Carbon-dioxide, Methane, Ozone (臭氧) and Nitrous Oxide (一氧化二氮). Gas analyzers show the concentrations of this stuff have increased somewhat since the beginning of the industrial revolution. 6. The greenhouse effect raises the average temperature of the Earth by more than 30 degrees, so without it the Earth would be a very cold place! green house effectLanguage points 1. There is no doubt that the earth is
becoming warmer and that it is human
activity that has caused this global
warming rather than a random but
natural phenomenon.
本句的主句是There is no doubt，从句是两个由that引导的同位语从句。There is no doubt that ...是固定句型，意为“毫无疑问……”，that引导的是同位语从句，用来进一步补充说明doubt的具体内容。
[考例] Some researchers believe that there is no doubt ______ a cure for AIDS will be found.
A. which B. that C. what D. whether2. Without the ‘green house effect’, the earth would be about thirty-three degrees Celsius cooler than it is.
如果没有温室效应，地球会比现在冷33℃。
▲这是一个含蓄虚拟条件句 应该注意有时假设的情况并不以条件从句形式表示出来，而是通过一个介词短语或其他方式表示。常用的词或短语有：without, but for, but that, otherwise, or, but等。 e.g. Without your help ( = If we had not had your help), we could not have succeeded.
要是没有你的帮助，我们是不会成功的。 e.g. But for electricity (= If there were no electricity), there would be no modern industry.
要是没有电，就不会有现代工业。 e.g. He was having a meeting with his students; otherwise he would have come.
他当时正与他的学生进行讨论，否则的话他就来帮我们了。 3. It was a scientist called Charles
Keeling who made accurate
measurements of the amount of carbon
dioxide in the atmosphere from 1957
to 1997.
是一位名叫查尔斯·奎林的科学家把
1957至1997年期间大气层中二氧化碳
的含量作了精确的统计。该句是一个it was ... who强调句。a scientist called Charles Keeling是被强调部分，其中called Charles Keeling为过去分词短语作后置定语，修饰a scientist。4. On the other hand, there are those, like George Hambley, who are opposed to this view, believe that we should not worry about high levels of carbon dioxide in the air.
另一方面, 还有一些人，对这一观点持反对态度，像科学家乔治·汉布利，他们认为我们不必担心空气中高含量的二氧化碳。该句是一个主从复合句。主句为there are those，like scientist George Hambley 作句子的插入语，who引导的定语从句修饰those，且在该定语从句中其谓语动词believe又带有that引导的宾语从句。句子的主要部分可以表示为: ... there are those who believe that ... on the other hand: used to give another opinion or fact that should be considered as well as the one you have just given 另一方面
also on the one hand ... on the other hand I want to go to the party, but on the other hand I ought to be studying.
我想去参加聚会，但从另一方面来说，我应该留下来学习。Homework
1. Read the passage again and review
the new words and expressions.
2. Prepare the debate in groups.
3. Preview Using Language -- WHAT
CAN WE DO ABOUT GLOBAL
WARMING?Using language Extensive Reading What can we do
about global warming?Skim the letters and find who the writers are and what their purpose of writing the letters is. SkimmingThe first letter is written by a student who is asking for suggestions for his project — global warming.
The second letter is written by an editor of Earth Care magazine. He offers the student some suggestions on what to do about global warming. List Earth Care’s suggestions and then in groups, discuss whether you think you can carry out each suggestion. ScanningIf you are not using electrical appliances, turn them off.YesSave
energyYesSave
energyYesSave
energyYesSave
energyIf you’re cold, put on more clothes instead of turning up the heat.Motor vehicles use a lot of energy, so walk or ride a bike if you can.Recycle cans, bottles, plastics and newspapers and buy things made from recycled materials.YesSave energyYesPlants absorb carbon dioxide from the air.Plant more trees.Get your parents or friends to buy products that are made to save energy.YesTogether, individuals can make a difference.Talk with your family and friends about global warming and tell them what you’ve learned.Read the text carefully and fill in the blanks. What can we do about global warming?
◆ Turn a(n) _________________ off when
you’re not using it.
◆ Put on more clothes instead of turning
up the _____.
◆ Walk or __________ instead of taking
motor vehicles. electrical applianceheatride a bike◆ ________ cans, bottles, plastics and newspapers.
◆ Buy things made from __________
__________.
◆ Buy products that are made to save
________.
◆ __________ in your garden or your
school yard.
◆ Talk with your family and friends
about _______________. recycled
materialsenergyPlant treesglobal warmingRecycle1. I am doing a project on behalf of my school about global warming.
on behalf of 代表……一方，作为……的代言人
e.g. I’m writing on behalf of my mother to express her thanks for your gift.
我代表我母亲写信, 对你的礼物表示感谢。Language points2. We don not have to put up with
pollution.
put up with 忍受，容忍
e.g. He couldn’t put up with the noise,
so he kept the windows shut all day long.
他忍受不了嘈杂声，所以整天窗户紧闭。3. It is OK to leave an electrical appliance on so long as you are using it –if not, turn it off!
so long as 只要，也可以用作as long as
e.g. You will do all right so long as you
follow my advice.
只要你听我的建议, 你一定会做好的。
I am happy so long as you are happy.
只要你高兴，我就高兴。4. Recycle cans, bottles, plastic bags and newspapers if circumstances allow you do.
circumstance n. 环境，情况
e.g. I know I can trust her in any
circumstance.
我知道我在任何情况下都能信任她。
You should soon accommodate
yourself to the new circumstance.
你应尽快适应新环境。it的用法（二）Language Study???????? It 的用法及强调句型 口诀
代词 it 本意它, 既可指这又指那;
时间天气均可指, 谈到距离也用它;
假主假宾均可做, 强调句型跟that。Learning
about
language Go over new words and phrases in the previous the sections. Then complete each sentence with one of those new words or phrases.Drills1. Charles Keeling collected _____ on the carbon dioxide content in the atmosphere over a forty-year period. He found that the amount of carbon dioxide _______ increasing during that time.datakept on2. Although we are burning coal in huge _________ every year, we won’t ________ of it for centuries.
3. If the amount of greenhouse gases continues to ________, we could be facing a global ___________.quantitiesrun outbuild upcatastrophe4. Many scientists believe that global warming has __________ through the burning of fossil fuels. come about5. The ____________ of a rising sea
level would be widespread flooding.consequence6. On the whole the warming
of the earth is a ____________ that causes great concern.
7. The _______ shows temperature changes during the 20th century.
8. One hectare of forest can absorb 23 tons of carbon dioxide ____ year.phenomenongraphper9. The washing machine uses
too much energy, but _______ we buy a more economical one, it would still use too much water.
10. The car accident on the main road yesterday __________ one driver’s death.even if resulted in由 it 引导的强调句结构：
It is (was) + 被强调部分 + that (who) + 句子其他部分
注意：此结构强调的成分仅限于主语，宾语和状语。ExplanationIt was in that city that we met for the first time．e.g. It was not until he told me that I knew the truth．原句：My father did the experiment in
the lab yesterday evening． 强调宾语：It was the experiment that my father did in the lab yesterday evening． 强调主语：It was my father who /
that did the experiment in the lab
yesterday evening． 强调地点：It was in the lab that my father did the experiment yesterday evening． 强调时间：It was yesterday evening
that my father did the experiment in
the lab．Make four sentences with “it” for emphasis.HomeworkWriting????????如何设计英文海报
海报是极为常见的一种招贴形式，属于户外广告，常见于公共场所，具有画面大、内容广泛、艺术表现力丰富等特点，一般用于宣传活动。【写作要求】
1. 海报的主题鲜明，内容简单明了，
使人一看就懂，同时要具有感染
力，能够唤起公众的关注。
2. 海报的语言要求简明扼要，可以用
些鼓动性的词语， 但不可夸大事实。
3. 海报的形式要求新颖美观，能 吸引眼球。【写作指导】
海报的基本结构：
标题：可以直接用号召性的语句，也 可以添加副标
题，对海报的内 容加以说明。
2. 正文：多用祈使句，句子短小精炼、通俗易懂。
3. 结尾：可以用标语或口号鼓 动人心。【实战演练】
请你根据下面的图片和提示，自己设计一张英文海报。 要点提示：
1. 使用环保购物袋；
2. 多步行，骑单车；
3. 双面使用纸张；
4. 拒绝使用一次性用品；
5. 随手关灯，节约用电；
6. 回收废电池；
7. 少用罐装食品、饮品。【参考范文】
Save our earth
Green earth needs your efforts
Use reusable shopping bags.
Walk or ride a bike.
Use paper on both sides.
Never use one-use only
items. Turn off lights when leaving.
Recycle used batteries.
Use canned food or drinks less often.
Your efforts can make a difference!通过学习这篇写作指导，你掌握英文海报的写作方法了吗？试着根据要求自己设计一张海报，然后与范文对照，找出其中的不足并加以改进。请你选择其中一张海报，设计一份英文海报。
know where all this energy comes from.windmillsa coal power stationan oil refinerya nuclear power plantsolar panelshydro-electric damListeningLi Bin is interviewing Professor Keeling about using different sources of energy. Read the statements below and tick the ones you agree with.1. Listen to Part 1 and decide which statements Professor Keeling does NOT agree with.
We should stop depending on fossil fuels for our energy.
2. 90% of our energy comes from fossil fuels.Agree Agree 3. We can replace fossil fuels with cleaner
sources of energy.
4. Nuclear power is a good source of
energy.Disagree Disagree We should stop depending on fossil
fuels for our energy.
2. 90% of our energy comes from
fossil fuels.
3. We can replace fossil fuels with
cleaner sources of energy.
4. Nuclear power is a good source of
energy.2. Listen to Part 1 again and tick the energy sources that are mentioned. Complete the notes on them.Produce carbon dioxide
cheap and concentrated form of energyclean
not very practical with present technologydoes not produce carbon dioxide
dangerousclean
not practical: need huge areas of land to provide enough energy3. Listen to Part 2 and then list three things we can do to save energy. First we must try to find ways to use fossil fuels that does not put carbon dioxide into the air.
Second we must produce products that are economical with energy.
Third we must ask people to cut down on the energy they use.4. Listen to part 2 again and fill in the blanks.LI BIN: … What about ________? They don’t cut down on their use of ______.energyfactoriesKEELING: No, they don’t. However, that is a ________ we must work on as a ______ community. That means _________ and __________ countries will have to work together.problemglobaldevelopeddevelopingLI BIN: But it’s not the __________ countries that put most of the carbon _______ into the air. The developed countries are really the ones to ______.developingdioxideblameRenewable or non-renewable?Renewable or non-renewable?What is told in the picture?Sample listslightheatingcoalnon-renewableoilnon-renewabletelevision cassette player video recorder computer natural gasnon-renewable wind (wind power)renewable sun (solar energy)renewable uranium (nuclear energy)non-renewable fridgestovewashing machinehairdryerwater (hydro-electric)renewableplant waste (biomass energy)renewablehot springs or geysers (geothermal energy)renewablethe sea (tidal energy)renewableReading???????? GreenhouseWhat is the greenhouse made and used for? A greenhouse is made of glass
and is used for growing plants,
especially during cold weather.How does it work?
The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow
throughout the
cold period.What are the “greenhouse gases”?
In the atmosphere surrounding the earth there are gases called “greenhouse gases”, including carbon dioxide, methane (甲烷, 沼气) and water vapor.What do you think greenhouse gases do?
They trap the heat of the sun and keep the air surrounding the earth warm. (Paragraph 1)Introduce a debate over the issue of global warming. Raising a question(Paragraphs 2---3) Illustrate how global warming comes about.Giving examples, using graphs, explanation. (Paragraphs 4---5) List two different attitudes among scientists towards global warming.Giving examples, making contrast. (Paragraph 6) It’s up to readers to think and decide whether people should do something about global warming or not.Using a question, leaving readers to think over the issue. Careful readingRead the text carefully and fill in the blanks.gasesquantities ofglobal temperaturecatastrophehigh levels consequencesStatespositiveII. Choose the best answer.
1. The first graph in the text is used to ________.
attract readers’ attention
B. introduce the topic of global warming
C. act as an example
D. support the opinion and make it more convincing2. The author probably agrees that ________.
global warming is good for us
B. we can do nothing about global warming
C. catastrophes will happen if the globe keeps on warming
D. much remains to be found out about the effects of global warmingPost reading Answer the questions.
Who wrote the magazine article?
What is the name of the magazine?
Sophie Armstrong wrote the magazine article. The name of the magazine is Earth Care. 2. What are the names of the three scientists mentioned in the article?
They are Dr. Janice Foster,
Charles Keeling and George
Hambley.3. What do they think about global
warming? Do they agree with one
another?
There are some very different attitudes among scientists towards this issue. Some think the effects will be terrible, while some others believe that we should not worry about it. Graph I shows the temperature increase of one degree Fahrenheit between 1860 to 2000.4. What are the two graphs about?Graph 2 shows the carbon dioxide content
in the atmosphere from 1957 to 1997.5. What is the main topic of the article?
Global warming/ the warming of the earth.1. The temperature in the last century did not seem to increase much.
2. Everyone believes that global warming is caused by the activities of humans.
3. Janice Foster believes that she can measure the future global rise in temperature.4. The rise in carbon dioxide is causing a
steady increase in global warming.
5. George Hambley believes that global
warming will do good rather than
harm to the earth.
6. It is clear what the effects of global
warming will be.We should do nothing about the global warming.Debate
Instructions
● Get into groups of six. Decide which three in your group are going to agree with the statement (Group A) and which three are going to disagree with the statement (Group B).● Group A discuss why they agree with the statement; Group B discuss why they disagree.
● Group A and B get together. Tell each other the reasons for agreeing or disagreeing with the statement.Supplementary materials for debating
Global warming
1. The planet has warmed anywhere
from 0.5 to 1.0°C (1 to 2°F) over
the last century. This small amount makes a huge difference, causing glaciers to melt and, potentially (潜在的), sea level to rise. We could see even more of this in the future, (maybe another 3°C, or 5°F)2. A definition of global warming would have to include a measurable, consistent temperature rise, like the one we have seen in recent history. A question remains – Is it an unusual change? Much debate about that one.3. The earth gets one kind of energy (visible light) from the sun and gives off another kind (infrared红外线). This kind is what gets trapped by “green house gases” (GHG’s) in the atmosphere.Green house gases
4. The global warming green house effect really is a bogus (假的) term. A greenhouse keeps warm by physically trapping the air inside and preventing convection (对流). The atmosphere helps keep the planet warm by trapping outgoing radiation instead.5. The leading gasses are Carbon-dioxide, Methane, Ozone (臭氧) and Nitrous Oxide (一氧化二氮). Gas analyzers show the concentrations of this stuff have increased somewhat since the beginning of the industrial revolution. 6. The greenhouse effect raises the average temperature of the Earth by more than 30 degrees, so without it the Earth would be a very cold place! green house effectLanguage points 1. There is no doubt that the earth is
becoming warmer and that it is human
activity that has caused this global
warming rather than a random but
natural phenomenon.
本句的主句是There is no doubt，从句是两个由that引导的同位语从句。There is no doubt that ...是固定句型，意为“毫无疑问……”，that引导的是同位语从句，用来进一步补充说明doubt的具体内容。
[考例] Some researchers believe that there is no doubt ______ a cure for AIDS will be found.
A. which B. that C. what D. whether2. Without the ‘green house effect’, the earth would be about thirty-three degrees Celsius cooler than it is.
如果没有温室效应，地球会比现在冷33℃。
▲这是一个含蓄虚拟条件句 应该注意有时假设的情况并不以条件从句形式表示出来，而是通过一个介词短语或其他方式表示。常用的词或短语有：without, but for, but that, otherwise, or, but等。 e.g. Without your help ( = If we had not had your help), we could not have succeeded.
要是没有你的帮助，我们是不会成功的。 e.g. But for electricity (= If there were no electricity), there would be no modern industry.
要是没有电，就不会有现代工业。 e.g. He was having a meeting with his students; otherwise he would have come.
他当时正与他的学生进行讨论，否则的话他就来帮我们了。 3. It was a scientist called Charles
Keeling who made accurate
measurements of the amount of carbon
dioxide in the atmosphere from 1957
to 1997.
是一位名叫查尔斯·奎林的科学家把
1957至1997年期间大气层中二氧化碳
的含量作了精确的统计。该句是一个it was ... who强调句。a scientist called Charles Keeling是被强调部分，其中called Charles Keeling为过去分词短语作后置定语，修饰a scientist。4. On the other hand, there are those, like George Hambley, who are opposed to this view, believe that we should not worry about high levels of carbon dioxide in the air.
另一方面, 还有一些人，对这一观点持反对态度，像科学家乔治·汉布利，他们认为我们不必担心空气中高含量的二氧化碳。该句是一个主从复合句。主句为there are those，like scientist George Hambley 作句子的插入语，who引导的定语从句修饰those，且在该定语从句中其谓语动词believe又带有that引导的宾语从句。句子的主要部分可以表示为: ... there are those who believe that ... on the other hand: used to give another opinion or fact that should be considered as well as the one you have just given 另一方面
also on the one hand ... on the other hand I want to go to the party, but on the other hand I ought to be studying.
我想去参加聚会，但从另一方面来说，我应该留下来学习。Homework
1. Read the passage again and review
the new words and expressions.
2. Prepare the debate in groups.
3. Preview Using Language -- WHAT
CAN WE DO ABOUT GLOBAL
WARMING?Using language Extensive Reading What can we do
about global warming?Skim the letters and find who the writers are and what their purpose of writing the letters is. SkimmingThe first letter is written by a student who is asking for suggestions for his project — global warming.
The second letter is written by an editor of Earth Care magazine. He offers the student some suggestions on what to do about global warming. List Earth Care’s suggestions and then in groups, discuss whether you think you can carry out each suggestion. ScanningIf you are not using electrical appliances, turn them off.YesSave
energyYesSave
energyYesSave
energyYesSave
energyIf you’re cold, put on more clothes instead of turning up the heat.Motor vehicles use a lot of energy, so walk or ride a bike if you can.Recycle cans, bottles, plastics and newspapers and buy things made from recycled materials.YesSave energyYesPlants absorb carbon dioxide from the air.Plant more trees.Get your parents or friends to buy products that are made to save energy.YesTogether, individuals can make a difference.Talk with your family and friends about global warming and tell them what you’ve learned.Read the text carefully and fill in the blanks. What can we do about global warming?
◆ Turn a(n) _________________ off when
you’re not using it.
◆ Put on more clothes instead of turning
up the _____.
◆ Walk or __________ instead of taking
motor vehicles. electrical applianceheatride a bike◆ ________ cans, bottles, plastics and newspapers.
◆ Buy things made from __________
__________.
◆ Buy products that are made to save
________.
◆ __________ in your garden or your
school yard.
◆ Talk with your family and friends
about _______________. recycled
materialsenergyPlant treesglobal warmingRecycle1. I am doing a project on behalf of my school about global warming.
on behalf of 代表……一方，作为……的代言人
e.g. I’m writing on behalf of my mother to express her thanks for your gift.
我代表我母亲写信, 对你的礼物表示感谢。Language points2. We don not have to put up with
pollution.
put up with 忍受，容忍
e.g. He couldn’t put up with the noise,
so he kept the windows shut all day long.
他忍受不了嘈杂声，所以整天窗户紧闭。3. It is OK to leave an electrical appliance on so long as you are using it –if not, turn it off!
so long as 只要，也可以用作as long as
e.g. You will do all right so long as you
follow my advice.
只要你听我的建议, 你一定会做好的。
I am happy so long as you are happy.
只要你高兴，我就高兴。4. Recycle cans, bottles, plastic bags and newspapers if circumstances allow you do.
circumstance n. 环境，情况
e.g. I know I can trust her in any
circumstance.
我知道我在任何情况下都能信任她。
You should soon accommodate
yourself to the new circumstance.
你应尽快适应新环境。it的用法（二）Language Study???????? It 的用法及强调句型 口诀
代词 it 本意它, 既可指这又指那;
时间天气均可指, 谈到距离也用它;
假主假宾均可做, 强调句型跟that。Learning
about
language Go over new words and phrases in the previous the sections. Then complete each sentence with one of those new words or phrases.Drills1. Charles Keeling collected _____ on the carbon dioxide content in the atmosphere over a forty-year period. He found that the amount of carbon dioxide _______ increasing during that time.datakept on2. Although we are burning coal in huge _________ every year, we won’t ________ of it for centuries.
3. If the amount of greenhouse gases continues to ________, we could be facing a global ___________.quantitiesrun outbuild upcatastrophe4. Many scientists believe that global warming has __________ through the burning of fossil fuels. come about5. The ____________ of a rising sea
level would be widespread flooding.consequence6. On the whole the warming
of the earth is a ____________ that causes great concern.
7. The _______ shows temperature changes during the 20th century.
8. One hectare of forest can absorb 23 tons of carbon dioxide ____ year.phenomenongraphper9. The washing machine uses
too much energy, but _______ we buy a more economical one, it would still use too much water.
10. The car accident on the main road yesterday __________ one driver’s death.even if resulted in由 it 引导的强调句结构：
It is (was) + 被强调部分 + that (who) + 句子其他部分
注意：此结构强调的成分仅限于主语，宾语和状语。ExplanationIt was in that city that we met for the first time．e.g. It was not until he told me that I knew the truth．原句：My father did the experiment in
the lab yesterday evening． 强调宾语：It was the experiment that my father did in the lab yesterday evening． 强调主语：It was my father who /
that did the experiment in the lab
yesterday evening． 强调地点：It was in the lab that my father did the experiment yesterday evening． 强调时间：It was yesterday evening
that my father did the experiment in
the lab．Make four sentences with “it” for emphasis.HomeworkWriting????????如何设计英文海报
海报是极为常见的一种招贴形式，属于户外广告，常见于公共场所，具有画面大、内容广泛、艺术表现力丰富等特点，一般用于宣传活动。【写作要求】
1. 海报的主题鲜明，内容简单明了，
使人一看就懂，同时要具有感染
力，能够唤起公众的关注。
2. 海报的语言要求简明扼要，可以用
些鼓动性的词语， 但不可夸大事实。
3. 海报的形式要求新颖美观，能 吸引眼球。【写作指导】
海报的基本结构：
标题：可以直接用号召性的语句，也 可以添加副标
题，对海报的内 容加以说明。
2. 正文：多用祈使句，句子短小精炼、通俗易懂。
3. 结尾：可以用标语或口号鼓 动人心。【实战演练】
请你根据下面的图片和提示，自己设计一张英文海报。 要点提示：
1. 使用环保购物袋；
2. 多步行，骑单车；
3. 双面使用纸张；
4. 拒绝使用一次性用品；
5. 随手关灯，节约用电；
6. 回收废电池；
7. 少用罐装食品、饮品。【参考范文】
Save our earth
Green earth needs your efforts
Use reusable shopping bags.
Walk or ride a bike.
Use paper on both sides.
Never use one-use only
items. Turn off lights when leaving.
Recycle used batteries.
Use canned food or drinks less often.
Your efforts can make a difference!通过学习这篇写作指导，你掌握英文海报的写作方法了吗？试着根据要求自己设计一张海报，然后与范文对照，找出其中的不足并加以改进。请你选择其中一张海报，设计一份英文海报。