Unit 4 Global warming The third period 课件-优质公开课-人教选修6精品

water and endanger living
things.
5 Butts take up to 5 years to
break down, so the toxic
chemicals add up to a great
amount.
Second
Paragraph point of
III
the
2 4.5 trillion butts are
littered every year in
the world.
3 Butts spoil the beauty of the
environment.
Paragraph 4 Butts contain toxic chemicals.
II
These get into the water supply. These decrease the quality of
Writing task
Writing tips: Step 1: Write out the thesis statement. (point of view) Step 2: Write out the topic sentence of the first body paragraph. Step 3: Give the supporting points and details about the first subtopic.
Step 4: Write out the topic sentence of the second body paragraph. Step 5: Give the supporting points and details about the second subtopic. (more body paragraphs ... )

It’s about global warming\the warming of the earth. 2. Who wrote the magazine article?
What is name of the magazine?
They are Dr.Janice Foster,Charles Keeling and George Hambley.
Reading Comprehension II True or false?( P27) 2
scanning
1. The temperature in the last century didn’t seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes 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.
What’s worse ,the glaciers(冰川） of the South Pole are beginning to crack（破裂）

planned or thought about
3．advocate
C．the facts or conditions that affect a situation
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4．circumstance
D．publicly support a particular
policy or ways of doing things
dioxide in the air?
答案：Many things we do every day. 3．What uses a lot of energy every day? 答案：We use a lot of energy in our houses and motor vehicles use a lot of energy too. 返回
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1．average
[教材P29原句]
The greenhouse effect gives the
earth’s surface the average temperature of 15℃.
温室效应使地球表面的平均温度保持在15℃。
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(1)adj.平均的；普通的 ①The average price of houses in this city has increased
· Plant 9. trees .
· Tell the people around you about 10. global warming . 返回
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A．词义配对 1．widespread A．a promise to do something
2．average
B．happening without being

Writing
Write down the advantage or disadvange of global warming in your opinion.
Homework
Surf the Internet for more information about global warming.
高中英语课件
madeofcanruohanxing
Reading:
The Earth Is Becoming Warmer-But Does It Matter?
Which of the following picture doesn't show the phenomenon of global warming?
Para.5
E.puzzles about global warming
Para.6
F.different attitudes to global warming
Para.7
G.an introduction to the passsage
Paragraph1 graph about? What has caused this phenomenon? It shows the temperature increase of one degree Farenheit between 1860 to 2000. Human activity.
Para.1
A. the cause of the earth's becoming warmer
Para.2
B.the consequence of burning fossil fuels
Para.3
C.the increase of carbon dioxide