选修六 Unit4

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Words study

Global warming

Unit 4

New Words and expressions

temperature 温度

one degree Fahrenheit 华氏一度

explore 探索

human activities 人类活动

phenomenon 现象

subscribe to 同意，赞成

fossil fuels 矿物燃料

byproduct 副产品

“greenhouse” gases 温室气体

atmosphere 大气

methane 甲烷， 沼气

degree Celsius 摄氏度

quantities of 大量的

accurate measurements 精确的测量

data 资料，数据

catastrophe 大灾难

be opposed to 反对

environmental consequences 环境影响

a great range of 大量的

even if 即使

keep on 继续

Can you think of some natural disasters

(自然灾害) because of the extreme heat?

Lead-in

drought(旱灾)

disappearance of species

fire

Who wrote the magazine article? What’s the name of the magazine?

What are the names of the three scientists mentioned in the article?

What is mainly discussed in the passage?

The sea level to rise.

flood

I feel so hot !

Why is it so hot now?

Global warming

reasons

A rising population

The use of energy

Greenhouse gases

Burning of fossil fuels (coal, oil and natural gas)

Agricultural industry

Destruction of forests

Discussion

Conclusion: It is human activity that has caused the global warming.

The earth is becoming warmer

-

but does it matter?

Reading

Page 26

3.What is mainly discussed in the passage?A. What has caused the global warming and whether it matters.B. What effects of the global warming will be.C. How serious the global warming could be.D. What the global warming is.

Skimming

Reading tips — skim the title and Para 1:

Title: THE EARTH IS BECOMING WARMER  BUT DOES IT MATTER?

Para 1: XXXXX how has this come about and does it matter?

Paragraph 1

Paragraphs 2&5

Paragraph 6

Main idea of the text

Paragraph 7

A. How global warming comes about? (全球变暖是怎样产生的)

B. Two different opinions about global warming.

D.The earth is becoming warmer.

C. Should we do anything?

Matching work

Careful Reading

How has global warming come about(产生)?

1. Human activity

The problem begins when huge quantities of extra carbon dioxide (大量的二氧化碳) are added into the atmosphere.

XXXXXis due to the burning of fossil fuelsXXXXX

2. Greenhouse gases

Paragraph 2&3

Fossil Fuel(矿物燃料)

coal

oil

gas

● ● ● ● ● ●

produce

二氧化碳

Paragraph 2&3

Listen and fill in the blanks.

All scientists _________ the view that the increase in the earth’s temperature _________(由于)the burning of ________(化石燃料) like coal, natural gas and oil to

produce energy.

The problem begins when we ________(添加) huge__________ (大量的)extra

carbon dioxide_____ the atmosphere. It means that more heat energy tends to be trapped in the atmosphere ________ the global temperature to go up.

subscribe to

is due to

fossil fuels

add

quantities of

to

causing

During the 20th century, the temperature of the earth didn’t

seem to increase much.

2. There is no doubt that global warming is caused by the human activities.

3. Not all scientists believe that the increase in the earth’s temperature is due to the burning of fossil fuels.

True or false

4. The levels of carbon dioxide have increased greatly over the last 100—150 years.

5. George Hambley believes that global

warming will do good to the earth.

6. We know the effects of global warming.

Individual work

Task A. 1>who is the author of the magazine article?__________

2>How to say “发生，造成”in English?___________

3>Dr Janice Foster made accurate measurements of the amount of carbon dioxide in the atmosphere in 1957 to 1997.(T or F)

TASK B. 1> How to say “上升；增长；升起”in English?————

2>Global warming is a natural phenomenon .(T or F)

3>what’s the emphatic pattern（强调句式） _________

Sophie Armstrong

come about

go up

____F

It is/was XXXXXthat/who

F

Does global warming matter?

Positive effects （正面影响）

Negative effects (负面影响）

Group work- Discussion

Every coin has two sides.

cause the sea level to rise

severe storms

floods

droughts

famines

the spread of diseases

disappearance of species

Positive effects

Negative effects

make plants grow quicker

crops will produce more

a greater range of animals

make life better

Summary

We are concerned about global warming, but how did the global warming ________ (发生)? Too much fossil (2)________ (燃料) that has been ________ (消耗) caused the global warming. Believe it or not, (4)________ (只要) you live on the earth you will suffer from the global warming, (5)________ (即使) you did not (6)________ (导致) it. It is so (7)________ (广泛的) that nobody can avoid it.

Fortunately, there are (8)________ (大量的) things we can do. We can plant more trees, decrease the use of fossil burning, ride bicycles (9)________ (等等). In recent years, big companies have tended (打算) to use high technology. Government offices ________ (反对) high energy-consuming enterprises. People also pay much attention to the consequence (影响) of the global warming.

We strongly believe that the carbon dioxide emissions won't go up(上升) and will steadily reduce.

come about

fuels

consumed

so long as

even if

result in

widespread

quantities of

and so on

are opposed to

Home work

1.Read aloud and underline the important and difficult points

2.Narrating: retell the story

3.Writing : what should we do about global warming?

Just choose one of them as you like

Thank You

Wish you good luck everyday![全文已结束，注意以上仅为全文的文字预览，不包含图片和表格以及排版]

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