1. Saving the earth Lesson 34 Unit 9 Earth, Air and Water Xin xiuli

3. areacattlecauselimitgraduallyIn place hillsideblow awaypower station milechemical rain time and time againRussialose one’s sightshore presentdirtytanker pour square kilometres Bhopalthe Mediterranean Lake Baikal Alaska Revise the new words and expressions in Lesson 34

5. EARTH, AIR, WATER,1986, 125,000, 1984, 2500, 50%, 1/4, 700, 1989, 35,000, 34,000, 10,000, 48,000 etc) Pay attention to the following words and numbers:

6. 1.Many parts of the world with large population and plenty of crops have become desert. 2. Land may become poor if farmers do not limit their cattle. 3. Good soil is gradually lost these days as trees are being cut down. 4. Air pollution and water pollution are the two causes of problem that many parts of the world have become desert. 5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the rain. 6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged. 7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted. 8. Once oceans are polluted, they are not able to clean themselves. (T) (F)

7. Answer the questions 1. Why is the area of desert growing every year? 2. What can be done to stop land from turning into desert? 3. What are the causes of air pollution? 4. What damage can chemical rain cause? 5. What had happened in Germany by 1986? 6. When and where did a bad accident happen at a nuclear power station? 7. What accident happened in India in 1984? 8. What is the general cause of water pollution? 9. Why is the Mediterranean not able to clean itself once it is polluted? 10. What was the result of an oil tanker accident that happened off the northwest coast of Alaska in 1989?

8. 1. Why is the area of desert growing every year? 2. What can be done to stop land from turning into desert? 3. What are the causes of air pollution? 4. What damage can chemical rain cause? 5. What had happened in Germany by 1986? 6. When and where did a bad accident happen at a nuclear power station? 7. What accident happened in India in 1984? 8. What is the general cause of water pollution? 9. Why is the Mediterranean not able to clean itself once it is polluted? 10. What was the result of an oil tanker accident that happened off the northwest coast of Alaska in 1989? Answer the questions:

9. Note making Write notes about the above passages. DAMAGE TO: CAUSED BY: EARTH AIR WATER waste from factories and cities; accidents caused by oil tankers sometimes smoke from factories,power stations,cars,chemical rain,accidents at nuclear power stations and factories too many cattle,not enough rain, cutting down trees, strong winds

10. Language points: 1.cattle a head of cattle, fifty head of cattle, a herd of cattle 2.fail to do sth.;fail in doing sth 3.one suggested answer polluted rivers a divided country a carved figure

11. 4.hold the soil in place 。 “ 使土壤保留在原 来的地方 ” in place 是固定词组，意思是 “ 在原来的地 方 ” 。 e.g. （ 1 ） She likes everything to be in place. 她喜欢一切东西都放在原来的位置。 2 ） Don’t move the table. Leave it in place. 不要移动桌子，把它留在原来的地方。

12. 5.It is said that…=People say that… It is thought that …=People think that … It is believed that…= People believe that … It is thought that our football team will certainly win.= People think that our football team will certainly win.

13. 6.the+adj./pp the injured=the injured people 英语中，有些形容词或过去分词前加 定冠词 the ，表示一类人。例如： the young =young people the rich=rich people the blind= blind the wounded= wounded people the oppressed= oppressed people

14. PhenomenaCausesSuggestions EARTHEARTH The area of desert is growing every year. Good soil is gradually lost. AIRAIR Air is being polluted. A lot of people died from polluted air in both Russia and India. Trees in the forest are destroyed and fish in the lakes are killed.

15. PhenomenaCausesSuggestions EARTHEARTH The area of desert is growing every year. Good soil is gradually lost. AIRAIR Air is being polluted. A lot of people died from polluted air in both Russia and India. Trees in the forest are destroyed and fish in the lakes are killed. Cattle eat grass. Limit the number of the cattle. Trees being cut down; strong winds blowing the valuable soil away. Plant more trees and try to protect them. Factories, power stations and cars produce a lot of waste. There are serious accidents that polluted the air. Chemical rain. A lot of things have to be done to reduce pollution. New laws should be passed and people should realize how serious the problem is.

16. WATERWATER Water pollution is caused by waste from factories and cities. Oceans…clean…, but certain seas, once … One example is the Mediterranean… It has only … One quarter of … are polluted and are no longer …, as … diseases... In most places … not safe … Lakes also have the same problems.... the cleanest …, with over 700 …. Now, however, the waters of …, which … deepest (over… metres), have been dirtied... In 1989 an oil tanker hit a rock off the northwest coast of Alaska. 35,000 …. The accident … the worst …. More than … birds and …animals were killed. …square kilometres of ocean were polluted.

17. Good-bye !