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外研2003课标版《Listening and vocabulary》集体备课PPT课件优质课下载
Lead-in
Free –talk
1. When it comes to global warming, what comes into your mind first?
2. Does global warming matter to you? Is it important ? Tell me your reasons.
3. How does global warming come about? What are the causes?
Match the words with their definitions.
1
The air around the earth
To have a bad effect on someone of something
A substance used in chemistry
atmosphere
damage
chemical
atmosphere carbon dioxide chemical damage environment garbage melt pollution recycle the Poles coastal concerned evidence major urgent
4. The natural world-the land, air, water, plants and animals
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
environment
melt
recycle
carbon dioxide