Unit 2 Topic 1 Pollution has causes too many problems Section C 课件（20张PPT）

(共20张PPT)
Unit 2
Saving the Earth
Topic 1 Section C
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课堂小结
当堂检测
学习目标
重点研讨
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课堂小结
当堂检测
学习目标
重点研讨
学习目标
1. 能熟悉并正确运用本课时的重点单词和短语
2. 能初步了解who引导的定语从句
3.能了解污染的危害并提高环保意识
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1a
Read and understand.
Before you read, write down the things that can make noises. Then read the passage and check.
bus
wind
cat
piano
car
loud music
airport
machine
baby
noises made by
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In taday's world, almost everyone knows air pollution is harmful to people's health. However, not all people know noise is also a kind of pollution and is harmful to humans' health.
People who work and live in noisy conditions often go deaf. For example, many of the workers who print newspapers and books lose their hearing. Quite a few people living near airports also have hearing loss. Recently, it was reported that many teenagers in America can hear no better than 65-year-old people do, because these young people always listen to loud pop music.
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Making a loud noise in public is also a kind of pollution.
It not only disturbs others but also does great harm to people's
hearing. Cars and machines also produce too much noise. Such
pollution makes people feel uncomfortable and unpleasant,
and it can even cause them to bacome sick or deaf. Nowadays,
many countries are trying to solve all sorts of environmental
problems, including noise pollution.
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Noise is a sort/kind of pollution.
There are all sorts/kinds of noises.
They make us uncomfortable and unpleasant.
noise pollution
n. 种类； v. 把……分类
adj. 使人不舒服的
adj. 令人不快的
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1b
Read 1a and match the words with their meanings.
A. to hurt someone
B. a type or a kind
C. not be able to hear
D. to grow or make something
E. to put words or pictures onto paper using a machine
1. produce
2. deaf
3. print
4. harm
5. sort
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1c
Read 1a again and complete the following task.
1. Underline the topic sentence of the passag in 1a.
Noise is also a kind of pollution and is harmful to humans’ health.
2. How does noise harm people’s health
a. People often ____ ______.
b. People often feel ____________ and __________.
c. People may become _____ or _____.
d. Your point:
_____________________________.
go deaf
uncomfortable
sick
unpleasant
deaf
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3. Which phrase has the same meaning as “is harmful to”
4. Which sentence shows that many teenagers hearing in America is
not good
5. Why is the hearing of many young Americans not good
6. Has noise pollution caused you any problems If yes, share your
feelings with your classmates.
“do harm to”.
Many teenagers in America can hear no better than 65-year-old people do.
Because they always listen to loud pop music.
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2
Complete the following passage with the correct form of each word.
Noise is a kind of _________ (pollute). Cars and machines produce too much noise. It makes people feel ___________ (comfortable) and _________ (pleasant). It also does great ______ (harm) to people’s ______ (hear). Noise is very ________ (harm) to humans’ _______ (healthy).
pollution
uncomfortable
unpleasant
harm
hearing
harmful
health
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3
Choose one kind of pollution and discuss it in groups. The following questions may help you.
1. What is … pollution
2. What makes the … pollution
3. What problems does it cause
4. In what way is it harmful to people’s life
5. What has been done to solve these problems
…
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4
Write a short report about a kind of pollution based on 2 and 3. The topic sentence of each paragraph is given below.
… pollution is…
… pollution is harmful to people’s health…
The government has tried many ways to solve the problem…
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One possible version:
Air pollution is becoming more and more serious in today’s world. Some chemical factories produce terrible gas and make the air bad. Buses and cars also produce waste gas. In our daily life, burning gas, oil and coal also creates air pollution. The air pollution may cause a lot of problems. It is harmful to people’s health. It can cause breathing problems, sore eyes and even cancer. It can also harm the plants, and the farmers will get less harvest. Luckily, the government has tried many ways to solve the problem, such as making laws to prevent the factory from polluting the air.
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Key points
1. People who work and live in noisy conditions often go deaf.
在嘈杂的环境中工作和生活的人容易变聋。
定语从句
e.g. Beethoven was deaf.
go deaf 变聋
e.g. He _____ _____ because of the traffic accident.
went deaf
deaf adj. 聋的
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2. …many of the workers who print newspapers and books lose their hearing.
很多印刷报纸和书籍的工人丧失听力。
定语从句
e.g. Look! The man is printing something.
lose one’s hearing 丧失听力
a printer
hearing n. 听力，听觉
print v. 印刷
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3. It not only disturbs others but also does great harm to people’s hearing.(1) not only...but (also)的意思是“不但……而且……”，连接两个
并列成分，如果连接两个主语的时候，谓语动词和also后面的主语保持一致。例如：Not only my mother but also I like to go to the garden.
不仅妈妈而且我也喜欢去公园。(2) 以not only…but also 开头的句子往往引起倒装。
例如： Not only did he complain about the food, but he refused to pay for it.他不仅抱怨饭不好吃，而且拒绝付饭钱。
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Key phrases
1. go deaf
2. do harm to
3. be harmful to
4. lose one’s hearing
5. have hearing loss
6. in noisy condition
7. too much noise
8. no better than
9. as badly as
变聋
伤害
对……有害
失去听力
有听力损失
在嘈杂的环境下
太多噪音
和……(几乎)一样坏
和……一样坏
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Unit 2
Topic 1 Section C
初步了解who引导的定语从句
了解污染的危害并提高环保意识
新知学习
课堂小结
当堂检测
学习目标
重点研讨
根据句意及首字母提示补全单词。1.Almost everyone knows air p________ is harmful to people’s health.2. People who live in noisy conditions go d____ easily.3.The boy can hear no b____ than 70-year-old people because of the accident.4.We shouldn’t talk l______ in public.5. Noise is very h______ to human’s health.
ollution
eaf
etter
oudly
armful