广东惠州市惠阳一中实验学校英语B6 U4-1学案

Class________Name:_______________Group:__________________Assessment:___________

Unit 4 Global Warming Period 1 reading

Learning aims: 1. Know well the global warming

2. Enable the students to talk about different sources of energy.

Important point: Learning about effect the global warming brings human being.

Difficult point: To improve the skills of reading.

使用说明及学法指导：1. 通过阅读课本P25-27，完成预习案。2. 完成时间：30分钟。

预习案 Previewing Case

Task 1 Divide the text into 4 parts and match the idea of each part.

Part 1(Para __) Two different attitudes among scientists towards global warming.

Part 2 (Para __ to __) Whether people should do something about global warming or not.

Part 3 (Para __to _) How global warming comes about.

Part 4 (Para __) Introduce a debate over the issue of global warming.

Task 2 Careful reading

Part 1 1) Who wrote the magazine article? What is the name of the magazine?

______________ _________________

Part 2 2) What are graph 1

about?______________________________________________________________

3) What is the reason of the increase in the earth’s temperature?

_________________________________________________________________________________________

4) What will happen if we add quantities of carbon dioxide into the atmosphere?

_________________________________________________________________________________________

Part 3: List Charls Keeling’s, Dr. Janice Foster’s & George Hambley ‘s the ideas

Charls Keeling Dr. Janice Foster George Hambley

Graph2 shows that

carbon dioxide content of

the atmosphere

5)_________

From 1957 to 1997. Carbon dioxide has caused the

global temperature to 6)

________. An increase of five

degrees would be a 7)_________

and could be 8)______________. More carbon dioxide is a 9)__________

thing,

which makes crops 10)__________ more

and will en-courage 11)_____

_________________.

Task 3 True or False (Finish P27 Comprehending 2)

Task 4 语法填空

There is no doubt that the earth is becoming 1 ________(warm). But how has this come about

and does it matter? People have fierce debates about whether 2 ______is human activity that

has caused this global warming, 3 ___________ (compare) with most of the natural changes.

Many scientists 4 _____Dr. Janice Foster believe that people have caused the increase in the

earth’s temperature 5 ___ burning fossil fuels like coal, natural gas and oil to produce energy.

Some byproducts of this process are called “greenhouse” gases, the most important one of 6

______is carbon dioxide. The increased amount of carbon dioxide means that more heat energy

7 _________ (trap) in the atmosphere 8 ________ (cause) the global temperature to go up.

On the other hand, some scientists predict that any warming will be mild with few bad 9

____________(environment) consequences. Anyhow, even if we start reducing 10 ____ amount

of carbon dioxide and other greenhouse gases, the climate is going to keep on warming for

decades or centuries.

我的疑惑

探究案 Exploring Case

探究一Read and choose the best answer

1. What’s the main idea of the article?

A. It talks about different ideas of global warming B. It talks about the causes of global

warming

C. It talks about the effects of global warming D. all the above

2. In Para. 5 , “but it could be as high as 5 degrees” here “it ” refers to _____

A. the data B. the amount of global warming

C. the burning o f fossil fuels D. the increased carbon dioxide

3.Which statement is FALSE? ________

A. During the 20th century, the temperature increased.

B. Natural gas is s a byproduct of burning fossil fuels

C. Between 1957 and 1997 Charls Keeling measured the amount of carbon dioxide in the

atmosphere. \

D. Some scientists think if the amount of greenhouse gases continues to rise, we will face a global

catastrophe.

4.From the article, we can infer that ________

A. the earth has become warmer since early 20th century

B. the increased carbon dioxide is the only reason for global warming

C. some scientists think the sea level will rise as a result of global warming.

D. The issue of global warming will continue to be discussed.

探究二 难句翻译

1. There is no doubt that the earth is becoming warmer and that it is human activity that has

caused this global warming rather than a random but natural phenomenon.

__________________________________________________________________________________________________________________________________________________________________________________

2. All the scientists subscribe to the view that the increase in the earth’s temperature is due to

the burning of fossil fuels like coal, natural gas and oil to produce energy

__________________________________________________________________________________________________________________________________________________________________________________

3.Without the ‘greenhouse effect’, the earth would be about thirty-three degrees Celsius cooler

than it is.

_________________________________________________________________________________________

探究三 Discussion :What are the effects of global warming? Please list effects

negative