energy sources

solar

energy

oilcoalbiomass energy

nuclearenergy

hydro-electric power

wind

power ……

natural gas

wave / tidalenergy

① What are they? What ② are these

buildings made of?

③What’s the use?

greenhouse / glass

A greenhouse is used for_____________, especially during ____ weather.

Turn to Pre-reading 1,

Page 25.

Read & answer.

growing plants

cold

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_____ the heat from the

sunkeeps it from _________

____ the air

up

How does a greenhouse work?

trap…from…: keep sth in a place存住来自…的…

traps

escaping

heats

In the atmosphere surrounding the earth

there are gases, which are called

“greenhouse gases”.

methanewater vaporcarbon dioxide

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carbon dioxide

Fossil Fuel(矿物燃料 )

coal

oil

gas

global warming● ● ● ● ● ●

produce

What do you think greenhouse gases do?

Greenhouse gases _____ the heat of the sun and therefore ______ the earth.

It is known as __________________.

Nowadays our earth is becoming _____________________.

greenhouse effect

trap

warm

warmer and warmer

Fast Reading

1.1. WhoWho wrote the magazine wrote the magazine article? The article? The namename of the of the magazine?magazine?

2.2. What are the What are the namesnames of of the three scientists the three scientists mentioned in the article?mentioned in the article?

3.3. WhatWhat is mainly discussed is mainly discussed in the passage?in the passage?

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SkimmingSkimming★★ 1.1. WhoWho wrote the magazine wrote the magazine

article? The article? The namename of the of the magazine?magazine?

2. What are the 2. What are the namesnames of the of the three scientists mentioned in the three scientists mentioned in the article?article?

SSophie ophie Armstrong.Armstrong.

EEarth Care.arth Care.

DrDr Janice Foster, Charles Keeling, Janice Foster, Charles Keeling, George Hambley.George Hambley.Reading tips: In English, some nouns begin

with a capital letter(大写字母 ), such as names of people and places, titles(标题 ) of magazines, newspapers, stories and books, people’s titles(头衔 ), etc..

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

SkimmingSkimming

Reading tips — skim the title and Para 1: Title: THE EARTH IS BECOMING WARMER – BUT DOES IT MATTER?Para 1: … how has this come about and does it matter?

★★★

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Part 1.

Part II

Part III

The introduction

The body

The conclusion

Para 1

Para(2-6)

para7

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Part 1.(para1)

raise a question

Part II

Para2. who is to blame for the earth’s

Becoming warmer?

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Para 3

1.How do human affect the earth warming up?

Human burn fossil fuels like coal, natural

Gas and oil to produce energy.2. What is greenhouse gases?

The byproducts of the process of producing

energy, the most important one is carbon

Dioxide.

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Para 4. the levels of carbon dioxide have

increased greatly over the last 100 to 150 years

1.Who made accurate measurements of the

amount of carbon dioxide?

2. How much?

Para 5. How high will the temperature go?

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Tip: You can know somebody’s opinion through understanding hisor what he said.

What do Dr. Janice Foster and the scientist George Hambley think about the results of global warming?

Do they agree with one another?

quotations(quotations( 引引言言 ) )

Para 6Para 6

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Dr. Janice Foster thinks the effects of global warming could be very serious.George Hambley thinks global warming will be mild with few bad environmental consequences.

They They don't agreedon't agree with each other. with each other.

Para 6Para 6

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Does global warming matter?

Positive effects

Negative effects

1. cause the sea level to rise

2. severe storms3. floods4. droughts5. famines6. the spread of

diseases7. disappearance of

species

Positive effects

Negative effects

1. cause the sea level to rise

2. severe storms3. floods4. droughts5. famines6. the spread of

diseases7. disappearance of

species

Positive effects

Negative effects 1. make plants grow

quicker2. crops will

produce more3. a greater range of

animals4. make life better

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Idea-sharingIdea-sharing

What will global warming bring to us in your opinion?

I think …In my opinion…It will cause / make …

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Assignment Write a short passage about the effects of global warming.

Prepare the language points of this passage and underline the important ones.

After remembering the vocabulary, do the exercises on Page 28.

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