Unit 9 Saving the earth

1. Unit 9Saving the earth

3. Water pollution

4. Deforestation（滥伐）

5. Air pollution

6. 1.What is the biggest problem facing the earth? 2.What causes the problem?

7. Listening

8. Pre-reading 1.What did the representatives discuss at the Stockholm summit? 2.What does “sustainable development” mean? 3.What are the “big three”? 4.Why do people call the “big three” the three biggest killers in the world? 5.Besides the “big three”, what other topics have the speakers spoken about? 6.How can we save the earth? 7.What did many of the speakers say is the key to the future?

9. 1.What did the representatives discuss at the Stockholm summit? They discussed some of the most important problems facing our planet. 2.What does “sustainable development” mean? It means the question how we can continue developing the world without damaging the environment.

10. 3.What are the “big three”? The “big three” refers to contaminated drinking water, poor sanitation and air pollution. 4.Why do people call the “big three” the three biggest killers in the world? They cause more than seven million deaths every year, which takes up 15% of all the deaths in the world.

11. 5.Besides the “big three”, what other topics have the speakers spoken about? Poverty, war and violence. 6.How can we save the earth? Only by changing the way we live can we save the earth. 7.What did many of the speakers say is the key to the future? They said that education is the key to the future.

12. Read the text and find out which paragraph the main idea below belongs to. para2 a. the big three and the results caused by them b. it is a place to find solutions for thefuture 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

13. Detailed reading 1.According to the text, air pollution alone causes about __of all the deaths in the world every year. A.6.5% B.15% C.20% D.35% 2.What do the “big Three” refer to according to the passage? A. Contaminated drinking water, poor sanitation and air pollution. B. Poverty, war and violence. C. Food, clothing and shelter. D. Clean water, good environment and easy transportation. 3.Most of the deaths caused by air pollution happen in the countryside mainly because___ A. The environment is badly being damaged B. Wood and coal are widely used in rural areas C. A large part of forests has been cut down. D. It’s a big problem in developing countries

14. 4.Which is the best way to make developing countries prosper? A. Holding conferences like the Earth Summit. B. Richer countries offer much help. C. A better understanding of the environment D. International cooperation. 5. Which of the following statements is TRUE according to the passage? A. The Earth Summit was once of great help to China. B. The earth Summit is the best way to solve all kinds of problems. C. Without poverty, war or violence we can develop the world successfully. D. Our willingness to take action is necessary for the protection of our environment. 6.The first paragraph mainly tells us___ A. Where the Earth Summit was held B. When the Earth Summit is held C. How people discuss the most important problems D. What is the function of the Earth Summit

15. 7. which of the following best expresses the main idea of the passage? A.Different countries have different opinions about development . B.Equality and fairness are badly needed in today’s world. C.The earth Summit,a way to save the earth. D.Sustainable development,the future for the world. 8...”A better understading of the enviroment is necessary ,as is the willingness to act.”(Para,6)The underlined word can be replaced by___. A.Which B.so C.And D.but

16. 9.The Earth Summit is important mainly because___. A.It helps people realize that many of the things they do every day are bad for the environment B.It is a place to discuss problems and find solutions for the future C.Most of the the important leaders from different countries come to attend it D.It spreads messages across every aprt of the world 10.The key to solving the major problems facing the earth is _ A.To educate the people of the world B.To improve the living conditions of the people C.To treat people equally and fairly D.To hold conferences like the Earth Summit frequently

17. Try to find these sentences true or false. • The three big killers in the world are poverty, war, and violence. • Air pollution is a big problem only in rural areas,especially in developing countries. • 20% of the people on earth have no clean drinking water.

18. Language Points

19. 1. 20% of the people on earth do not have access to clean drinking water. on earth: (1) 在世上，在人间 She is the best person on earth. 她是世界上最好的人。 • (2) 放在疑问词when, what, who, where, how, which,和why、否定词或最高级后加 强语气，意为“究竟,到底,全然” What on earth is he doing? 他究竟在干什么？

20. on the earth在地球上 • 地球上有100万种生物. • There are more than one million living creatures on the earth. • in the earth在地下,在地里 • 他把那狗的尸体埋在了地下. • He buried the body of the dog in the earth.

21. 2.all too often “但经常发生的是， 然而更多的是”， 承接上下文的转折部分 Everyone wants to get happiness， all too often people quarrel a lot. all too 太过于,非常 + adj./adv. The holiday is all too short. The party ends all too soon.

22. 3. There is a chance that Chances are (that)… 有…可能\机会 The chances are (that)… Chances are that he has heard the news. 很可能他已经听到这个消息了。

23. Homework Find some information about the Earth Summit

24. Bye-bye