Unit 4 Global warming: reading
文档属性
| 名称 | Unit 4 Global warming: reading |
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| 格式 | rar | ||
| 文件大小 | 3.4MB | ||
| 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 | 2008-03-06 00:00:00 | ||
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课件42张PPT。welcomeGlobal WarmingLearning Aim:Know about the global warmingEmotion Aim:Save energy and protect environmentPicture readingA greenhouse is made of glass and is used for growing plants, especially during cold weather.What is a greenhouse made of and used for?greenhousePicture readingtraps the heat from the sunkeeps it from escapingheat upA greenhouseHow does it work?Greenhouse gasesCarbon dioxide
Methane(甲烷, 沼气)
Water vaporThe atmosphereWe need small amount of those gasesWhat do you think “greenhouse gases” do?
The earth is becoming warmer
-but does it matter?SkimmingSkim the title:
THE EARTH IS BECOMING WARMER – BUT DOES IT MATTER?What is the main topic?
A. The earth. B. Global warming.
C. Becoming warmer doesn’t matter.
What is the writing style?
A. Expositive. B. Descriptive.
C. Argumentative.
??SkimmingSkim the article: What are the names of the three scientists mentioned in the article?Who wrote the article?What is the name of the magazine?Tip: In English, some nouns begin with a capital letter, such as names of people and places, titles of magazines, newspapers, stories and books, people’s titles, etc..SkimmingLet’s check it: Sophie ArmstrongEarth CareDr Janice Foster, Charles Keeling,
George Hambley SkimmingSkim the organization of the article: A first paragraph that runs across
the page and is in bold (粗体)A titlemagazineThe main text is in 2 columns (栏), and has 2 graphs (图表) and 2 quotes (引言).evidenceEvidence or phenomenon?ScanningRead the 2 graphs: ScanningRead something more about the 2 graphs : Then do Ex. 2 on page 28.(Pair work)Tip: While reading a graph, you’d better pay attention to the numbers.
www.themegallery.comScanningLet’s check it: The 1st graph shows the global t between 1860 and . The temperature i and decreased over this period but on the whole it i by around one degree Fahrenheit. During this time, the earth reached its l temperature in about 1910 and its highest in . There was a steady i in the temperature during the 20 years after 1980. We can see from the graph that the earth has become w since early last century.emperature2000ncreasedncreased owest2000ncreasearmerwww.themegallery.comScanningLet’s check it: The 2nd graph shows the amount of c d in the atmosphere from to 1997. The Co2 c steadily i over this forty-year period. It went up from 315 to parts p million. arbonioxide1957ontentncreased370er Let’s have a competition:
How much do you know about global warming?
Group-work:
（Finish Ex2 on Page 27. True or False?）Task 2: Careful reading1.The temperature last century didn’t increase much.
2.Everyone believes that global warming is caused by the activities of humans.
3.Janice Foster believes that global warming is caused by burning fossil fuels.
4.Natural gas is a greenhouse gas.
5.Carbon dioxide is a byproduct of
burning fossil fuels. F F T F T1. The temperature last century increased much.
2. Not everyone believes that global
warming is caused by human activities.4. Natural gas is not a greenhouse gas
but a fossil fuel.
6.People accept Charles Keeling’s data because he took accurate measurements.
7.Flooding could be one of the effects of future global warming.
8.George Hambley believes scientists are just guessing about the effects of global warming.
9.George Hambley is worried about the effects of carbon dioxide on plant growth
10.It is clear what the effects of global warming will be. T T T F F9. George Hambley thinks that more
carbon dioxide is a positive thing and
it will make plants grow faster.
10. It is unknown what the effects of
global warming will be.
Q1. What do the 3 scientists think about global warming?
Do they agree with one another?
Q2: What are the effects of global warming? Task3 Detailed reading: listing (group work)Tip: You can know somebody’s opinion through understanding his quotations Dr. Janice FosterCharles KeelingGeorge HambleyDo they agree with one another?
the effects could be
very serious.
What do they think about global warming?should not worry about itthe burning of
more and more fossil fuels that is resulting in
a big increase in carbon dioxide.
The effect of global warming:
1.Make plants grow faster.
2.Crops will produce more
3.Encourage a greater range of animals1.The sea level to rise.
2. Severe storms, droughts, famines, the spread of diseases, and the destruction of species.Global warmingTask4: Try to sum up the main idea of the passage within 30 words.
The temperature of the earth rose _____________________ during the 20th century. However, the ________ have different ideas on whether it __________ when the earth is becoming __________.scientistsmatterswarmerabout one degree Fahrenheit Task 5 Inference (推论) Choices1. "But there are some very different attitudes among scientists towards this issue.” “issue" here means the same as the one in___ . A. I bought the new stamp the day of its issue. B. They are talking about one of the key issues in the meeting.
C. The government is expected to issue a statement about the election(选举). D. The magazine has 12 issues each year.2. The author probably agrees that ________ A. actually global warming is good for man. B. we should do nothing about the global warming. C. catastrophes will happen if the globe keeps on warming. D. a lot remains to be found out about the effects of global warming.
There is fierce debate over whether it is human activity that has caused this global warming.
It was a scientist called Charles Keeling who made accurate measurements ...
It is the burning of more and more fossil fuels that is resulting in this increase in carbon dioxide. Task 6:Text-understandingUnderstand the following sentences:“it” is used for emphasis.
The earth is becoming warmer, in your opinion, does it matter?.
DiscussionABA : We shall do something about global warming.B: We shall do nothing about global warming.
DiscussionDiscussionAs a student, what can you do about it?What we can do?Group DiscussionIf you were the leader of our government , what would you do to slow down global warming?1.Give money to green the surroundings and protect the forests.2.Encourage people to find and use more renewable energy.3.Make laws to protect the environmentLet us save energy
and protect
environment together. Did you do a good job?www.themegallery.comAssignmentThank you! main ideaPart1 (para1)Introduce a debate over the issue of global warmingPart 2 (para2)Part 3 (para3-8)Part 4 (para9)Illustrate how global warming comes aboutList two different attitudes among scientists towards global warmingIt’s up to readers to think and decide whether people should do sth about global warming or not 4 partsMatch the parts and main ideas.Video watching
Methane(甲烷, 沼气)
Water vaporThe atmosphereWe need small amount of those gasesWhat do you think “greenhouse gases” do?
The earth is becoming warmer
-but does it matter?SkimmingSkim the title:
THE EARTH IS BECOMING WARMER – BUT DOES IT MATTER?What is the main topic?
A. The earth. B. Global warming.
C. Becoming warmer doesn’t matter.
What is the writing style?
A. Expositive. B. Descriptive.
C. Argumentative.
??SkimmingSkim the article: What are the names of the three scientists mentioned in the article?Who wrote the article?What is the name of the magazine?Tip: In English, some nouns begin with a capital letter, such as names of people and places, titles of magazines, newspapers, stories and books, people’s titles, etc..SkimmingLet’s check it: Sophie ArmstrongEarth CareDr Janice Foster, Charles Keeling,
George Hambley SkimmingSkim the organization of the article: A first paragraph that runs across
the page and is in bold (粗体)A titlemagazineThe main text is in 2 columns (栏), and has 2 graphs (图表) and 2 quotes (引言).evidenceEvidence or phenomenon?ScanningRead the 2 graphs: ScanningRead something more about the 2 graphs : Then do Ex. 2 on page 28.(Pair work)Tip: While reading a graph, you’d better pay attention to the numbers.
www.themegallery.comScanningLet’s check it: The 1st graph shows the global t between 1860 and . The temperature i and decreased over this period but on the whole it i by around one degree Fahrenheit. During this time, the earth reached its l temperature in about 1910 and its highest in . There was a steady i in the temperature during the 20 years after 1980. We can see from the graph that the earth has become w since early last century.emperature2000ncreasedncreased owest2000ncreasearmerwww.themegallery.comScanningLet’s check it: The 2nd graph shows the amount of c d in the atmosphere from to 1997. The Co2 c steadily i over this forty-year period. It went up from 315 to parts p million. arbonioxide1957ontentncreased370er Let’s have a competition:
How much do you know about global warming?
Group-work:
（Finish Ex2 on Page 27. True or False?）Task 2: Careful reading1.The temperature last century didn’t increase much.
2.Everyone believes that global warming is caused by the activities of humans.
3.Janice Foster believes that global warming is caused by burning fossil fuels.
4.Natural gas is a greenhouse gas.
5.Carbon dioxide is a byproduct of
burning fossil fuels. F F T F T1. The temperature last century increased much.
2. Not everyone believes that global
warming is caused by human activities.4. Natural gas is not a greenhouse gas
but a fossil fuel.
6.People accept Charles Keeling’s data because he took accurate measurements.
7.Flooding could be one of the effects of future global warming.
8.George Hambley believes scientists are just guessing about the effects of global warming.
9.George Hambley is worried about the effects of carbon dioxide on plant growth
10.It is clear what the effects of global warming will be. T T T F F9. George Hambley thinks that more
carbon dioxide is a positive thing and
it will make plants grow faster.
10. It is unknown what the effects of
global warming will be.
Q1. What do the 3 scientists think about global warming?
Do they agree with one another?
Q2: What are the effects of global warming? Task3 Detailed reading: listing (group work)Tip: You can know somebody’s opinion through understanding his quotations Dr. Janice FosterCharles KeelingGeorge HambleyDo they agree with one another?
the effects could be
very serious.
What do they think about global warming?should not worry about itthe burning of
more and more fossil fuels that is resulting in
a big increase in carbon dioxide.
The effect of global warming:
1.Make plants grow faster.
2.Crops will produce more
3.Encourage a greater range of animals1.The sea level to rise.
2. Severe storms, droughts, famines, the spread of diseases, and the destruction of species.Global warmingTask4: Try to sum up the main idea of the passage within 30 words.
The temperature of the earth rose _____________________ during the 20th century. However, the ________ have different ideas on whether it __________ when the earth is becoming __________.scientistsmatterswarmerabout one degree Fahrenheit Task 5 Inference (推论) Choices1. "But there are some very different attitudes among scientists towards this issue.” “issue" here means the same as the one in___ . A. I bought the new stamp the day of its issue. B. They are talking about one of the key issues in the meeting.
C. The government is expected to issue a statement about the election(选举). D. The magazine has 12 issues each year.2. The author probably agrees that ________ A. actually global warming is good for man. B. we should do nothing about the global warming. C. catastrophes will happen if the globe keeps on warming. D. a lot remains to be found out about the effects of global warming.
There is fierce debate over whether it is human activity that has caused this global warming.
It was a scientist called Charles Keeling who made accurate measurements ...
It is the burning of more and more fossil fuels that is resulting in this increase in carbon dioxide. Task 6:Text-understandingUnderstand the following sentences:“it” is used for emphasis.
The earth is becoming warmer, in your opinion, does it matter?.
DiscussionABA : We shall do something about global warming.B: We shall do nothing about global warming.
DiscussionDiscussionAs a student, what can you do about it?What we can do?Group DiscussionIf you were the leader of our government , what would you do to slow down global warming?1.Give money to green the surroundings and protect the forests.2.Encourage people to find and use more renewable energy.3.Make laws to protect the environmentLet us save energy
and protect
environment together. Did you do a good job?www.themegallery.comAssignmentThank you! main ideaPart1 (para1)Introduce a debate over the issue of global warmingPart 2 (para2)Part 3 (para3-8)Part 4 (para9)Illustrate how global warming comes aboutList two different attitudes among scientists towards global warmingIt’s up to readers to think and decide whether people should do sth about global warming or not 4 partsMatch the parts and main ideas.Video watching