外研英语必修3 Module 4 Sandstorms in Asia Listening and vocabulary （共25张PPT）

(共25张PPT)
Module 4　 Sandstorms in Asia
Listening and vocabulary
Learning Objectives
1. Master the new words and phrases;
2. Improve listening skills;
3. Improve the awareness of environmental protection.
Words & Phrases
大气；大气层
重新利用；循环
消失
氧气
二氧化碳
燃烧
吸收
放出
atmosphere
recycle
disappear
oxygen
carbon dioxide
burn
take in
give out
Pre-listening
Match the words with the definitions.
atmosphere carbon dioxide chemical damage melt environment garbage pollution recycle the Poles
atmosphere
damage
chemical
1. the air around the earth
2. to have a bad effect on someone or something
3. a substance used in chemistry
4. the natural world ----the land, air, water, plants and animals
5. to change from solid to liquid
6. to treat something so that we can use again.
7. one of the gases in the air
environment
melt
recycle
carbon dioxide
8. the most northern and southern points on earth
9. rubbish
10. damage to the environment because
of chemicals
the Poles
garbage
pollution
While-listening
Task 1 & Task 2
Task 1 : Listen to an environmental expert’s speech. Put the topics below in the order you hear them.
A. garbage
B. trees
C. pollution from cars
D. melting ice at the Poles
E. the climate
5
1
2
3
4
1. As a result, the ice at ________ is beginning to melt.
2. The sea may rise and cities on the coast may_________.
Task 2:
Listen and complete these sentences.
the Poles
disappear
① Listen to the first part and
fill in Sentence 1 and 2.
Question 1:
Also, scientists have found that the ice at the Poles is beginning to melt.
Question2:
Then it's possible that the sea could rise and coastal cities like New York and Shanghai could disappear under water.

3. Too much carbon dioxide pollutes the __________.
4. Trees take in _____________and give out ________.
atmosphere
carbon dioxide
oxygen
② Listen to the second part and
fill in Sentence 3 and 4.
Question 3 & 4:
Int: From what I understand, carbon dioxide from cars is a major problem.
D.U: You're absolutely right. Carbon dioxide is the gas that does most damage to the atmosphere. But we have a problem with trees too. You see, trees give out oxygen and take in carbon dioxide. So they're very useful because they use up the carbon dioxide.

5. We _____ garbage and pollute the atmosphere.
6. Instead, we should ______ the garbage.
burn
recycle
③ Listen to the third part and
fill in Sentence 5 and 6.
Question 5 & 6:

D.U: And another problem is all the garbage that we produce. We burn a lot of garbage, and once again, the gases pollute the atmosphere. The situation couldn't be worse, really.
Int: We should recycle garbage, not burn it.
D.U: Of course we should.

learning to learn
We should connect the grammar with the listening text to find the key words more easily and complete the listening tasks more correctly.
Post-listening
Task1&Task2
Task1: Read the listening text and then answer these questions.
1. What is the most urgent problem of all?
2. What examples of coastal cities does David give?
3. Why is the climate getting warmer?
4. What is described as a major problem?
5. What happens when we cut down a lot of trees?
6. How does the interviewer feel about the situation?（ ）
A. Optimistic B. Pessimistic

Let's check your answers:
1. The climate.
2. New York and Shanghai.
3. Because pollution stops the
sun's heat from leaving
the atmosphere.
4. Carbon dioxide from cars.
5. That leaves more carbon dioxide
in the atmosphere.
6. B
Task2:
Role-play the conversation.
Faced with the problems mentioned above, what should we do?
Have a Discussion
Think of how we need to do to improve our environment.