外研版必修3Module 4 Sandstorms in Asia课堂教学ppt课件

这是一份外研版必修3Module 4 Sandstorms in Asia课堂教学ppt课件，共21页。PPT课件主要包含了atmosphere，damage，chemical，melt，recycle，the Poles，garbage，pollution，oxygen ，burn 等内容，欢迎下载使用。

Mdule 4 Sandstrms in Asia
T learn abut the prblems with the envirnment and their causes and cnsequences by listen t an envirnmental expert’s speech
Match the wrds with the definitins.
1. the air arund the earth ___________2. t have a bad effect n smene r smething _________
atmsphere carbn dixide chemical damage (v. & n.) melt envirnment garbage pllutin recycle the Ples
3. a substance used in chemistry _________4. the natural wrld – the land, air, water, plants and animals ___________5. t change frm slid t liquid, e.g. ice becmes water ______
6. t treat smething s that we can use again ________7. ne f the gases in the air ______________8. the mst nrthern and suthern pints n earth __________
carbn dixide
9. rubbish ________10. damage t the envirnment because f chemicals __________
Listen t an envirnmental expert’s speech. Put the tpics belw in the rder yu hear them.
A. garbage B. trees C. pllutin frm cars D. melting ice at the Ples E. the climate
Check the meaning f the wrds.
castalcncerned evidence majr urgent
cncerned adj. 关心的be cncerned abut /ver /fr 关心, 挂念as (s) far as … is cncerned 就……来说, 就……而言
Nw listen again and answer the questins:
1. What is the mst urgent prblem f all?
2. What examples f castal cities des David give?
The climate.
New Yrk and Shanghai.
3. Why is the climate getting warmer?
4. What is described as a majr prblem?
Because pllutin is stpping the sun’s heat leaving the atmsphere.
Carbn dixide frm cars.
5. What happens when we cut dwn a lt f trees?
6. Hw des the interviewer feel abut the situatin?
There is less xygen and mre carbn dixide in the atmsphere.
Optimistic.
1. As a result, the ice at _________ is beginning t melt.2. The sea may rise and cities n the cast may ______________________. 3. T much carbn dixide pllutes the ___________.
Listen again. Cmplete these sentences.
disappear (under water)
4. Trees take in _____________ and give ut ________. 5. We _______ garbage and pllute the atmsphere. 6. Instead, we shuld _______ the garbage.
1) Fish take in xygen thrugh their gills (鳃).2) Dn't trust that fellw. He will take yu in if he gets the chance.3) The kind ld lady ffered t take in the pr hmeless stranger.
4. The lessn was t difficult fr the class t take in.5. The article takes in all aspects f the prblem.
【即学即练】翻译下面句子。 1) We were cmpletely taken in by his stry. 我们完全被他的谎言欺骗了。 2) Our htel is full. We can't take in any mre guests. 我们的旅馆已经客满，不能再接待客 人了。
3) This bk is s difficult that I can't take in what the authr means. 这本书很难，我无法理解作者的意思。4) I usually drive t the cuntryside and take in the fresh air. 我经常开车去乡村吸收新鲜空气。
Talk abut what we can d t imprve ur envirnment. Then give a reprt next time.