资源简介

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Unit 3
Language in use
Module 12
Save our world
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01
学习目标
能熟悉并能正确运用本模块的单词和短语
能正确分析构词法的前缀后缀, 并能对其进行归纳和总结
能够谈论环保措施，并提出有关环保的建议
Warming up
Free talk
Can you say something about the environmental protection measures taken in daily life
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Warming up
Free talk
Please explain the words “reduce”, “reuse”, “recycle” in English.
Presentation
-able -ful im- -less re- un-
care collect hope possible use usual wanted waste
Make new words. Join the parts of words in Box A with the words in Box B. You need to use some of the parts more than once.
A
B
02
新课讲授
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Now work in groups. Play the guessing game English for Fun.
collectable
hopeful
hopeless
impossible
unusual
useless
reuse
unwanted
wasteful
Summarize the rules of prefix and suffix word-formation.
派生法是英语主要的构词法。这方法是借前缀或后缀产生出派生词，主要有名词、形容词和动词三种。前缀以否定前缀un-、in-、im-、il-、ir-、non-、dis-、mis-等为主，使单词延伸出来的派生词变成其反义词。例如：injustice(不公平的)、unhappy(不高兴的)、impossible(不可能的)等。
(1)名词派生词
balance(平衡)→imbalance(不平衡)；pleasure(高兴)→displeasure(不高兴)；
management(管理)→ mismanagement(管理不善)；
efficiency(功效)→inefficiency(无效率)等。
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Summarize the rules of prefix and suffix word-formation.
(2)形容词派生词
accurate(精准，正确)→inaccurate(不正确)；
patient(能忍耐的)→impatient(无法忍耐的)；
regular(有规矩的)→ irregular(不规矩的)；
legal(合法的)→illegal(违法的)等。
(3)动词派生词
agree(赞同)→disagree(不赞同)；judge(判断)→misjudge(对……判断错误)；
treat(款待)→mistreat(虐待)等。
Summarize the rules of prefix and suffix word-formation.
除了否定前缀之外，其他常用的前缀还有 anti-、auto-、bi-、co-、counter-、de-、ex-、inter-、post-、pre-、pro-、re-、sub-、trans-、tri-、ultra-等。
但要注意：英语中的前缀in-、un-通常表示“不”或“……的相反”的含义，因此由其构成的派生词一般具有否定的意义。然而，有些由这两个前缀构成的派生词并非有否定的意义，而与词根同义或近义。著名学者周海中教授在《in-、un-不一定表示“否定”》一文中就举了若干个例子，如：
coming/incoming(来到)；habit/inhabit(居住于)；loose/unloose(解开，释放)；rip/unrip(撕开)等。这类派生词虽然不多，但值得注意，勿望词生义。
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Complete the sentences with the words in the box.
1. Polluted water is __________.
2. It is _________ to throw so much food away.
3. If you look after things well, you may ________ some of them later.
4. It is ___________ to clean up the whole river in such a short time.
5. If we pay attention to pollution now, the future will be ________.
unhealthy
hopeful impossible reuse unhealthy wasteful
wasteful
reuse
impossible
Practice & Listening
hopeful
Complete the table.
Noun Verb Adjective Adverb
useful/useless
hope hopefully/hopelessly
pollution —
water — —
waste
— — usually/unusually
use
use
usefully/uselessly
hope
hopeful/hopeless
pollute
polluted/unpolluted
water
waste
wasteful/wasted
wastefully
usual/unusual
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Complete the sentences with the correct form of the words in Activity 3.
She was hopeful that her new job would make her more successful.
1. The factory __________ the river, and the fish died.
2. We often walk in the countryside. It is a(n) ________ activity for us.
3. Do not use so much water. It is very _________.
4. To keep the flowers growing, you need to ________ them once a day.
polluted
usual
wasteful
water
Complete the sentences with the words in the box.
hopeful impossible reuse unhealthy wasteful
1 Polluted water is _____________.
2 It is ____________ to throw so much food away.
unhealthy
wasteful
3 If you look after things well, you may ______ some of them later.
4 It is ___________ to clean up the whole river in such a short time.
5 If we pay attention to pollution now, the future will be ___________.
reuse
impossible
hopeful
02
Language practice
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Complete the table.
Noun Verb Adjective Adverb
useful/useless
hope hopefully/hopelessly
pollution —
use
use
usefully/uselessly
hope
hopeful/hopeless
pollute
polluted/unpolluted
03
Language practice
Noun Verb Adjective Adverb
water — —
waste
— — usually/unusually
water
waste
wasteful/
wasted
wastefully
usual/
unusual
Language practice
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Complete the sentences with the correct form of the words in Activity 3.
She was ___________ that her new job would make her more successful.
hopeful
1 The factory _________ the river, and the fish died.
polluted
2 We often walk in the countryside. It is a (n) __________ activity
for us.
3 Do not use so much water. It is very _________.
4 To keep the flowers growing, you need to ________them once a day.
water
wasteful
usual/useful
04
Language practice
Complete the sentences.
A _________ is a box that you keep your lunch in.
lunchbox
1 A ____________ is a card that you write on one side of and send to
someone by post.
2 A __________ is a room where you have classes at school.
classroom
postcard
3 A ___________ is a book that has one or more stories for children.
4 A ____________ is a black board that is used at school for writing on
with chalk.
blackboard
storybook
05
Language practice
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Work in pairs. Look at the pictures and answer the questions.
1 What kinds of things can be recycled
2 How can these things be reused
3 How does this help the environment
4 Have you ever recycled or used things
that can be recycled How
06
Language practice
Complete the conversation with the correct form of the expressions in the box.
be good for throw away turn off worry about
I hear you are off to the Caribbean for a holiday! Lucky you! But aren’t you (1) _______________the pollution that such long plane journeys may cause for the environment
worried about
Mike:
07
Language practice
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I know, but what can I do about it I’ve already tried my best to protect the environment. I recycle. I don’t (2) __________ things if I don’t want them any more. I (3)_________the lights when I leave a room. Don’t tell me I shouldn’t travel by plane any more!
throw away
turn off
Ken:
Language practice
Mike:
No, of course not. But we can do more to protect the environment. For example, we can help keep the air clean by planting trees. Trees (4)____________the environment. In this way, we can reduce the harm of pollution.
are good for
Good! So I can enjoy my holiday, and when I come back, I’ll plant some trees!
That’s the idea! Maybe we can all join in and start a small forest!
Ken:
Mike:
Language practice
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Listen and check (√) the true sentences.
It’s OK to throw used things away. Looking after them takes a lot of time. □
Do not throw away things made of glass, plastic and paper, but recycle them when possible. □
Take a bag when you go shopping. □
√
√
08
Language practice
Producing electricity and using oil will not cause pollution. □
5. Turn off lights when you do not need them. □
6. Ride a bike or walk, and do not often drive your car. □
√
√
Language practice
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Advice Reasons
1. Don’t throw away things made of ____________________, but_______ them. Throwing things away is wasteful.
2. ______ your plastic bags when you can and __________ with you when you go shopping. Plastic bags ____________ recycle.
3. Use less electricity and oil to ___________. 4. Don’t leave lights on and ____________. 5. _____________ and do not often drive your car. Producing electricity and using oil may cause ____________.
glass, plastic and paper
recycle
Reuse
take a bag
are hard to
reduce pollution
waste electricity
Walk or cycle
pollution
Listen again and complete the table.
09
Language practice
Reuse and recycle
It’s a waste to throw used things away. Don’t throw away things made of glass, plastic and paper, but recycle them if possible. Plastic bags are hard to recycle, so reuse the old ones when you can. Take a bag with you when you go shopping.
Tapescript
Reduce pollution
Producing electricity and using oil may cause pollution of the air, water and earth in many different ways. If we use less electricity and oil, we can reduce pollution. Here is some advice: don’t leave lights on and waste electricity; walk or cycle, and don’t drive a car unless you have to. Walking and cycling are good for your health too!
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Earth Hour
Earth Hour is held toward the end of March each year. During Earth Hour, people all across the world switch off the lights they do not need. They do this to show their awareness of climate change.
The first Earth Hour was held in 2007 in Sydney, where more than 2.2 million people switched off their lights. Today, more and more cities are taking part in the event, such as Beijing, London, Rome and New York, and landmarks like the Empire State Building and the Golden Gate Bridge will go dark.
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Module task: Discussing what you can do about pollution
Work in groups. Decide what kind of pollution you want to talk about.
Choose a subject that you care about the most. It could be water pollution, air pollution, etc.
Find out more information about your subject. Look it up on a website or in a book.
10
Discuss your subject.
Take turns to say what you think about the problem and what can
be done.
Listen to what others say. If you agree with what they have said,
say “I agree”, “That’s true” or “That’s a good point”; if you do not
agree with what someone says , say “I’m sorry, but I don’t agree. I
think that ...”
11
Module task: Discussing what you can do about pollution
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Present your group’s ideas to the whole class.
12
Module task: Discussing what you can do about pollution
Possible answer
Yes, I agree with you that air pollution is one of the most serious problems. A great deal of energy is needed to run the factories of modern industrial nations. Automobile, trains, planes and busses need energy, too. Nearly all of this energy is produced by burning fuels. The burning produces wastes, some of which remain in the air, causing air pollution.
Scientists are finding ways to stop air pollution especially in big industrial areas and densely-populated cities. They are studying new ways of generating electricity that may be less damaging to the environment. At the same time, many power plants are being modernized to give off less polluted material. Also, engineers try to design and locate new power plants to do minimum damage to the environment.
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However, it may be that we still have a long way to go before we have a "clean" world. Nearly all of the countries are trying hard to prevent and control air pollution. There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution.
Possible answer
1. We have learnt word building: compounds, derivatives, conversion.
2. We have learnt to write an article about environment.
Summary
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Homework
1. Finish the task in KESHI A JIHUA.
2. Go over what you’ve learnt in Unit 3.
Thanks
Class is over! Bye!
外研九年级上册 Module 12

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