3. But now------

4. Our earth is injured and she is being sent to hospital .

5. The Earth Summit
The Earth Summit is a meeting held by the United Nations to discuss environmental issues. The first Earth Summit was held in Stockholm, capital of Sweden, to exchange ideas on how to protect the earth. Since 1972 to 2002, it has altogether been held 21 times,each with a theme.For example,
The first -- the Human Environment
14th--- Action for equality,development and peace
21st---Sustainable Development

6. Read the text and find out which paragraph the main idea below belongs to.
a. the big three and the results caused by them
b. it is a place to find solutions for the future
para7
c. a brief introduction to the Earth Summit.
para1
e. Words by a visitor to the Earth Summit
para5
f. Something about poverty,war, and violence
para3
g. Willingness to take action is necessary.
para6
h.conferences help people understand that there exist serious problems and there is still time to take action.
para4

7. Compare with your partner and decide what you think each part of the text will be about
Introduction
(para 1)
Body
(para 2-6)
Conclusion
(para 7)
Introduction of the Earth Summit
Major problems facing the world
What we can do to solve the problem

8. Introduction (Para 1) Fill in the form Time Place Theme 1972 2002
Stockholm
The Human Environment
Johannesburg
Sustainable Development

9. Contaminated drinking water
Body (para 2-para 6)
What does the “big three” mean?
Poor sanitation
Contaminated drinking water
Big three
Air pollution

10. Why do people call the “big three” the three biggest killers in the world?

11. water pollution
It is estimated that over 1 billion people---about one-fifth of the world’s population---lack access of safe drinking water. A child dies every eight seconds from contaminated water, with total deaths every year of over 5 million people.
As the human population continues to grow, the problem of availability of supplies of safe drinking water is to be worse.

12. How many people die because of air pollution every year?
Where does such a problem most happen? Why?

13. Air pollution
Air pollution comes from many different sources such as factories, power plants,dry cleaners, cars, buses-----
Air pollution can threaten the health of human beings, trees, lakes, crops,and animals,and damage the ozone layer(臭氧层） and buildings.

14. Poverty,war,violence----
1 Are there any other major problems facing the earth?
Poverty,war,violence----

15. opinions: What do you think these two pictures indicate?
In which way do you think we can solve the problem?

16. Question Imagine you have done a survey of the
environment in the area where you live.
Write a list of behaviors that are good or
bad. Then stand up, read them to your
classmates and ask them to answer.

17. education Conclusion (para7)
Q: What is the key to the problem according to the text? Why?
1. To build a better society and put an end to the death and suffering caused by the big three.
education
2. To wipe out much of the poverty.
3. To see less violence and fewer wars.

18. Chinese Society for Sustainable Development
                
Brief Summary of the purpose of our Society: Chinese Society for Sustainable Development (in short as CSSD) is the only national none governmental organization, aiming to improve sustainable development in China, depending on progress of Science and technology. CSSD gathered groups of well known scholars, experts in both of natural science and social science.

19. Speeches:
Suppose we are now at the Changzhou summit and you are representatives from different parts of the world, such as East Asia, Africa, America, Middle East etc. Prepare a speech in groups of four to tell the audience what you think the most serious environmental problem is, why you think it is serious and what should be done about it.

20. Homework
1.Retell the text.
2. Preview Grammar---Inversion.