九上U2T1SC.ppt

Topic 1 Pollution causes too many problems.
Section C
Unit 2 saving the Earth
东城中学
李广杰
Can you tell me any kinds of
noise pollution?
Yes, the sound of …
Discuss these phrases, check
which is pollution and talk about
what kind of pollution it is.
Producing electricity by wind
Talking loudly after class
Laughing loudly at the cinema Smoking in public
Playing loud rock music at midnight
Burning wood ,gas, oil and coal
Listen and answer the following questions.
Does the writer think noise is a kind of pollution?
Yes, he does.
录音p29-1a
Is it harmful to human beings’ health?
How do you know?
Yes, it is. Because people who work and live in noisy conditions may go deaf.
·be harmful to = do harm to
·harm v. & n. 危害，伤害，损害
·do great harm to…对……有着极大的损害
. It not only disturbs others but also does great harm to hearing.
Translate the following sentences into Chinese.
Quite a few people living near airports also have hearing loss.
许多生活在机场附近的人们听力都减弱了。
quite a few = many
quite a little = much
very few 几乎没有几个
very little 几乎没有一点
However, not all people know that noise is also a kind of pollution…
然而，不是所有的人都知道噪音也是一种污染……
not all 表示不完全否定，意为“不是所有的都……”。同样的结构还有not both, not every, all…not, both…not, every…not