人教版B6 U4 Warming up & Reading+40张_图文

高中英语人教新课标选修6 Unit4 warming up and reading

Unit 4

Global warming
---warming up and reading

We depend on energy to do many things in our daily lives. For example, energy lights our cities and heats our buildings. Make a list of things that use energy in your home, in your school, or any other places you can think of.

energy sources

cassette player heating

micro-wave oven fridge

light
hairdryer

things that use energy stove in your home

television
computer

stove

video player

washing machine

Windmills
Wind energy is used as power to produce electricity .

The coal power stations

where electricity is produced by burning coals.

in which oil is refined and made pure.

The Oil Refineries

A nuclear power plant

a facility designed to convert nuclear energy into electricity.

Solar panels

on the roof of a house on a bright sunny day are used to collect solar energy, making your house warm or heating your water.

are used to keep back The Hydroelectric dams water and raise its level for irrigation or for producing electricity, etc.

Uranium Ore (铀矿石) The element uranium does not occur in pure form in nature but is found in minerals such as carnotite(钒钾铀矿), pictured here.

Guess it!

What source of energy?

Geysers(间歇泉)

Geothermal (地热的) Energy Plant

Discuss
An energy source is “renewable” when supplies of it never run out and “nonrenewable” when one day they will run out. Which energy sources on your list are renewable and which are non-renewable?

Things that use energy in your home light

Sources of energy
coal oil natural gas wind (wind power)

Renewable/nonrenewable
non-renewable non-renewable non-renewable renewable renewable

heating television cassette player
video player computer fridge stove washing machine

sun (solar energy)
uranium (nuclear energy) water (hydro-electric power) plant waste (biomass energy) hot spring or geysers (geothermal energy) the sea (tidal energy)

non-renewable
renewable renewable renewable renewable

hairdryer

What are these buildings made of and what is their purpose?

They are made of glass and plants can grow in it when it is cold outside.

How does it work?
The glass traps the heat from the sun, making the air warm so that plants can grow better.

Greenhouse gases!
What’s greenhouse gases effect?
Greenhouse gases perform the same function as the glass in a greenhouse --- They trap the heat of the sun and keep the air surrounding the earth warm. It is called the greenhouse effect.

The Earth Is Becoming Warmer – But Does It Matter?

Fast Reading

Glance at the article and answer the question.

What is the structure of a magazine like this and how is the text organized?

It has a title, a first paragraph that runs across the page and is in bold, the main text in two columns, graphs/diagrams, two quotes.

Reading comprehension

Read the article again and finish comprehending on page 27

1.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.

4.What are the two graphs about? Graph 1 shows Graph 1: the temperature increase of one degree Fahrenheit between 1860 to 2000. Graph 2 shows the carbon dioxide content in the atmosphere from 1957 to Graph 2: 1997.

5.What is the main topic of the article?

Global warming / The warming of the earth.

Read the article carefully. Tell true or false.
1.The temperature last century didn’t increase much. T 2.Everyone believes that global warming is caused by the activities of humans. T 3.Janice Foster believes that global warming is caused by burning fossil fuels. F
4.Natural gas is a greenhouse gas. T 5.Carbon dioxide is a byproduct of burning fossil fuels. T 6.People accept Charles Keeling’s data because he took accurate measurements. F

Detailed-Reading

Read the article in details and finish the following task.

listening
Listen to the reading passage and do some choices.

1. Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977? A. Dr. Janice Foster. B. Charles Keeling. C. George Hambley. D. Sophie Armstrong.

2. "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 election campaign. C. The government is expected to issue a statement about the election. D. The magazine has 12 issues each year.

3. 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.

Questionnaires -I
1.Does Sophie Armstrong support a clear opinion? No. he doesn’t state it clearly. 2.Does George Hambley believe that we should worry much about the global warming? No, he doesn’t.

3. How has the global warming come about?

①Human activity--- burning of fossil fuels. ② Greenhouse effect--- greenhouse gases--we need those gases.

③ Huge quantities of extra carbon dioxide---from
1957 to 1997---from around 315 parts per million to around 370 parts per million.

4.What are the effects of global warming?
①The sea level to rise.

② Severe storms, droughts, famines, the spread of diseases, and destruction of species.
③ Make plants grow faster. Crops will produce more. ④ Encourage a greater range of animals.

4 parts
Part1 (para1) Part 2 (para2)

main idea Introduce a debate over the issue of global warming

Illustrate how global warming comes about List two different attitudes Part 3 among scientists towards global (para3-8) warming
Part 4 (para9)

It’s up to readers to think and decide whether people should do sth about global warming or not

Questionnaires -II
1. What is the purpose of the paragraph that is in bold?

To introduce the topic.
2. What are the diagrams for?
To illustrate(阐述) points by providing evidence.

3. Why are there two quotes?

Because they are important or interesting points. Their aim is to attract your attention and to make you read them, and therefore to make you interested enough to read the whole article.

4. What is the purpose of the last paragraph of the article?
It functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future.

The different ideas between Dr. Janice Foster & George Hambley
Dr. Janice Foster Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ____________ and could be ______________. George Hambley More carbon dioxide is a __________ thing, which makes crops __________ and positive will encourage ____________________.

go up

produce

catastrophe very serious

a greater range of animals

Homework
?Prepare the language points of

this passage and underline the
important ones.
?Review the reading passage.

?Finish useful words and

expressions.


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