英语：module4_sandstorms_in_Asia-Listeningspeaking课件（外研版必修3）.pptVIP

* 品质来自专业 信赖源于诚信 金太阳教育网 Compare them What’s happening? Why ? What’s happening? Why ? What’s happening? Why ? What’s happening? Why ? Look at the pictures , and see what words you will think of? ____________ _____________ _____________ pollution environment atmosphere Match the words with their definitions. 1 atmosphere carbon dioxide chemical damage environment garbage melt pollution recycle the Poles The air around the earth To have a bad effect on someone of something A substance used in chemistry The natural world-the land, air, water, plants and animals atmosphere damage chemical environment 5. To change from solid to liquid, e.g. ice becomes water 6. To treat something so that we can use again 7.One of the gases in the air 8. The most northern and southern points on earth 9. Rubbish 10. Damage to the environment because of chemicals melt recycle carbon dioxide the Poles garbage pollution a) garbage b) trees c) pollution d) melting ice at the Poles e) the climate Listen to an environmental expert’s speech. Put the topic below in the order you hear them. 2 Checking your answers E D C B A What is the most urgent problem of all? What examples of coastal cities does David give? 3. Why is the climate getting warmer? The climate. Listen and answer these questions. 3 New York and Shanghai. Because pollution is stopping the sun’s heat leaving the atmosphere. What is described as a major problem? What happens when we cut down a lot of trees? How does the interviewer feel about the situation? 3 Carbon dioxide from cars. There is less oxygen and more carbon dioxide in the atmosphere. Optimistic. Listen and answer these questions. As a result, the ice at ____________ is beginning to melt. The sea may rise and cities on the coast may __________. Too much carbon dioxide pollutes the ______________. Trees take in _____________ and give out _______