外研版英语九年级上册Module 12 Unit 3 Language in use课件(共47张PPT)

(共47张PPT)
Unit 3 Language in use
Module 12 Save our world
外研·九年级上册
Language practice
Reuse means “use again”.
Though pollution is heavy now, I don’t think it’s hopeless.
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.
1
-able -ful im- -less re- un-
A
B
care collect hope possible use
usual wanted waste
Now work in groups. Play the guessing game English for Fun.
1 full of care __________
2 can be collected __________
3 full of hope __________
4 without any hope _________
careful
English for Fun
collectable
hopeful
hopeless
5 not possible __________
6 not usual __________
7 without any use __________
8 use again __________
9 not wanted __________
10 making a lot of waste __________
useless
impossible
wasteful
unusual
reuse
unwanted
Learning to learn
Sometimes if you know the meaning of the parts of a word, you can work out the meaning of the whole word.
re+ new+ able: re= again, able=can be
renewable=can be new again
构词法：
合成法
派生法
转化法
Grammar
一、合成法
将两个或两个以上独立且语义不同的的单词合在一起构成新词的方法叫做合成法。如：afternoon、kind-hearted、maybe 等等。掌握合成法有助于我们理解和记忆更多单词。
在一个单词前或后加上一个词缀，就可以构成一个新词，这种方法叫做派生法。根据词缀的位置，分为前缀和后缀两种。掌握一些常见的词缀，对单词的记忆和理解有很大的帮助。比如：我们学会care, 就能掌握careful, careless, carefully, carelessly。下面我们来学习几个常见的前、后缀：
二、派生法
1. 表示否定意义 “无，不”的前缀：
impatient, impossible
un -
in -
dis -
im -
non-
unable, unhappy
inexpensive, indecision
disagree, dislike
non-smoker
前缀：
2. 表示 “再”的前缀：
re-
rewrite, reuse, recycle
3. 表示 “错误地”的前缀：
mis -
mislead , misunderstand
4. 表示 “在……之间，相互”意思的前缀：
inter- 表示“在……之间，相互”：Internet
后缀：
–able表示“可能，易于，适合于”，
构成形容词，
如：renewable, eatable(可吃的)，enjoyable
常见的后缀：
2. –ful表示“充满……的，具有……性的”， 构成
形容词，如：helpful, hopeful, powerful , useful,
careful, beautiful
3. –less 与-ful 相反，表示“少的，不足的”，构成
形容词，如：helpless, hopeless, powerless, useless,
careless
1. 动词变名词：
-ation
-ment
-er
-or
invitation, education,
agreement, government
teacher, worker
visitor, sailor
让我们来看一些不改变词根的基本意义，
而是改变了词性的后缀
2. 形容词变名词：
-ness
-ty
happiness, meanness, carelessness
activity, safety
3. 名词、形容词变动词：
-ify
-ize
-en
beautify, simplify
realize
quicken, widen, sharpen
4. 名词变形容词：
-y
-ous
-ful
windy, rainy, sandy
dangerous, humorous
helpful, careful, peaceful
英语构词法中把一种词性用作另一种词性而词形不变的方法叫做转换法。
三、转换法
动词转化为名词
— Let’s talk about it more.
— I think we’d better finish the talk now.
(2)名词转化为动词
— She gave me a cup of water.
— You should water the flowers twice a day.
(3)形容词转化为名词
— She was wearing a black dress.
— The girl in black looks very beautiful.
（黑衣服）
Complete the sentences with the words
in the box.
2
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
Complete the table.
3
Noun Verb Adjective Adverb
useful/useless
hope hopefully/hopelessly
pollution —
use
use
usefully/uselessly
hope
hopeful/hopeless
pollute
polluted/unpolluted
Noun Verb Adjective Adverb
water — —
waste
— — usually/unusually
water
waste
wasteful/
wasted
wastefully
usual/
unusual
Complete the sentences with the correct form of the words in Activity 3.
4
She was ___________ that her new job would make her more successful.
hopeful
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
Complete the sentences.
5
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
Work in pairs. Look at the pictures and answer
the questions.
6
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
Complete the conversation with the correct form of the expressions in the box.
7
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:
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:
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:
Listen and check (√) the true sentences.
8
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. □
√
√
4. 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. □
√
√
Listen again and complete the table.
9
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.
glass, plastic and paper
recycle
Reuse
take a bag
are hard to
Advice Reasons
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 _________.
reduce polltion
waste electricity
Walk or cycle
pollution
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!
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.
Around the world
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.
Module task: Discussing what you can do
about pollution
Work in groups. Decide what kind of pollution you want to talk about.
10
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 books.
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
Present your group’s ideas to the whole
class.
13
一、根据句意，用括号内单词的正确形式填空。
There is a place in my heart where all nations will live __________ (peace) some day.
2. There are many __________ (different) between
the twins. One is shy, but the other is outgoing.
peacefully
differences
Exercise
二、单项选择。
There are __________ sharing bikes in many cities. So there will be __________ pollution.
A. less and less; more and more
B. less and less; fewer and fewer
C. more and more; less and less
D. fewer and fewer; less and less
2. — What a mess! The sharing bikes are thrown
everywhere.
— Let’s collect and put them in the right place
______ they can be used conveniently.
A. unless
B. so that
C. because
D. so long as
3. — The apple pies here taste ______ than those
from anywhere else.
— Yes. But it will be better if they are ______.
more delicious; more expensive
less delicious; more expensive
more delicious; less expensive
less delicious; less expensive
Homework