外研版九年级英语上册课件Module 12 Save our world Unit 3(共37张PPT)

(共37张PPT)
外研 九年级上
Module 12
Save our world
To summarize and consolidate the rules of word building
Objective:
Can you list more compound words
one new compound word
one word
one word
+
Do you know the meanings of these words
Possible answers:
Observe the following sentences carefully. And pay attention to the words in red.
1. Reuse means “use again”.
2. Though pollution is heavy now, I
don’t think it’s hopeless.
3. If the rivers are polluted, farmers
can’t use the water for their crops.
4. If everyone starts to do something,
the world will be saved.
5. We all need a healthy environment, but
we produce waste every day, and it is
harmful to our environment.
6. Do not waste things.
7. Repeat these three words daily:
reduce, reuse and recycle.
8. Before you buy something new, think
whether it is really necessary because
maybe old one is just as good!
9. …but let’s take these simple steps today
so that we will save the world for our grandsons and granddaughters tomorrow.
1. _______ (use) means “use again”.
2. Though ________ (pollute) is heavy now, I don’t think it’s ________ (hope).
3. If the rivers are polluted, ________ (farm) can’t use the water for their crops.
4. If _______ (everyone) starts to do _________ (something), the world will be saved.
5. We all need a _______ (health) environment, but we produce _______ (waste) every day, and it is _______ (harm) to our environment.
Reuse
pollution
hopeless
farmers
everyone
something
healthy
waste
harmful
go
Ready
6. Do not ______ (waste) things.
7. Repeat these three words daily: reduce, _______ (use) and _______ (recycle).
8. Before you buy _________ (something) new, think whether it is _______ (real) necessary because maybe old one is just as good!
9. …but let’s take these simple steps today so that we will save the world for our ________ (grandson) and _________ (granddaughter) tomorrow.
waste
reuse
recycle
something
really
grandsons
granddaughters
将两个或两个以上独立且语义不同的单词合在一起构成新词的方法称作合成法。
合成名词 afternoon, sportsman, blackboard, newspaper, airplane, classmate…
合成形容词 kind-hearted, middle-aged, hard-working…
合成副词 however, maybe…
合成代词 himself, everyone, nothing…
合成动词 overlook…
通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法称作派生法。
前缀 含义 例词
dis- 不 disagree, dislike
en- 使……处在某种状态 enable, enrich
im-, in- 不 impossible, impatient, inexpensive
inter- 在……之间 international, interconnect
mis- 错误的 mislead, misunderstand
non- 不，非 non-smoker, non-native
re- 再，重复 rewrite, retell
un- 不 unable, unhappy, unpopular
后缀 含义 例词
-er, -or 构成名词 teacher, worker, visitor
-ian musician
-ing building, painting, shopping
-ist artist, scientist
-ment agreement, government
-ness coldness, happiness, illness
-th truth, warmth
-tion competition, education, information
-ty activity, safety
后缀 含义 例词
-able, -ible 构成形容词 comfortable, eatable, enjoyable
-al environmental, international
-ful careful, helpful
-ive active, expensive
-less careless, helpless, homeless
-ly friendly, lovely, monthly
-ous dangerous, famous
-teen 构成数词 eighteen, fifteen, seventeen
-th fifteenth, fifth, fortieth
-ty forty, sixty, twenty
-ly 构成副词 badly, carefully, happily
词根
词缀
名词
形容词
副词
+
…
interest
uninterested
interestingly
uninteresting
interested
interesting
派生规律
help
helpfully
helplessly
helpful
helpless
able
disable
unable
enable
ability
英语构词法中把一种词性转化为另一种词性而词形不变的方法称为转化法。
(1) v. → n.
— Let’s talk about it more.
— I think we’d better finish the talk now.
— 咱们再谈谈这件事吧。
— 我想我们最好现在结束谈话。
(3) adj. → n.
— She was wearing a black dress.
— The girl in black looks very beautiful.
— 她穿着一条黑色的裙子。
—那个穿黑衣服的女孩看上去很漂亮。
(2) n. → v.
— She gave me a cup of water.
— You should water the flowers twice a
day.
— 她给了我一杯水。
— 你应该每天给这些花浇两次水。
以下部分为课本练习，供老师在对答案时选择使用。
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 renewable
again
can be
can be new again
1
P100
Make new words. Join the parts of the words in Box A with the words in Box B. you need to use some of the parts more than once.
-able
-ful
im-
-less
re-
un-
care
collect
hope
possible
use
usual
wanted
waste
A
B
careful careless
collectable
hopeful hopeless
impossible
reuse usable useful useless
unwanted
wasteful
unusual
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 _____
5. not possible _________
6. not usual __________
7. without any use _____
8. use again __________
9. not wanted _________
10. making a lot of waste ___________
careful
collectable
hopeful
hopeless
impossible
unusual
useless
reuse
unwanted
wasteful
2
P100
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.
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
wasteful
reuse
impossible
hopeful
3
P101
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
4
P101
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.
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
5
P101
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.
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.
postcard
classroom
storybook
blackboard
6
P101
Work in pairs. Look at the pictures and answer the questions.
1. What kind of things can be recycled
2. How can these things be used
3. How does this help the environment
4. Have you ever recycled or used things
that can be recycled How
possible answers:
Cloth, paper, cans, plastic, glass, etc.
Recycled paper can be used for notebooks, tickets or writing paper.
It helps save a lot of resources and reduce greenhouse gas emissions.
Yes. I recycled aluminum cans and paper by selling them to the recycled factory.
Mike: 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
Ken: I know, but what can I do about it I already
try 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!
be good for throw away turn off worry about
worried about
throw away
turn off
7
P102
Complete the conversation with the correct form of the expressions in the box.
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.
Ken: Good! So I can enjoy my holiday, and
when I come back, I’ll plant some trees!
Mike: That’s the idea! Maybe we can all join
in and start a small forest!
be good for throw away turn off worry about
are good for
1. It is OK to throw used things away. Looking after them takes a lot of time.
2. Do not throw away things made of glass, plastic and paper, but recycle them when possible.
3. 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.
8
P102
Listen and check (√) the true sentences.
√
√
√
√
×
×
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
9
P102
Listen again and complete the table.
英语中常见的构词法：
1. 合成法
2. 派生法 （加前缀、后缀）
3. 转化法（词性变词形不变）
1. Both of the books were _______ to her
and she couldn’t decide which one to buy.
2. How ________ of John to break the cup!
3. The meat has a strange smell. I’m afraid it’s hardly _________.
I. 选择适当的单词并用其正确形式填空。
Quiz
helpful
careless
eatable
correct energy eat possible
appear help success care
correct energy eat possible
appear help success care
4. Tom is an _________ boy and it seems that he never gets tired.
5. I’m afraid that it’s __________ for us to get there before eight.
6. The sun ___________ behind the clouds and it began to rain.
7. I’m sorry to say your answer is __________. Please try again.
8. It’s not easy to become a ___________ actor.
energetic
impossible
disappeared
incorrect
successful
Ⅱ.完成下列同义句。
It’s not polite to speak to others with
your mouth full of food.
It’s _________ to speak to others with
your mouth full of food.
2. The teacher asked him to write the composition again.
The teacher asked him to ________
the composition.
impolite
rewrite
3. He’s not popular with some of the
neighbors.
He’s _________ with some of the
neighbors.
4. I hate sweet food. Especially, I don’t like
eating cake.
I hate sweet food. Especially, I ______
eating cake.
5. Hamburgers, candy and ice cream
aren’t healthy food.
Hamburgers, candy and ice cream are
_________ food.
unpopular
dislike
unhealthy
1. Review the grammar we’ve learned today by heart.
2. Finish the exercises in Learning English.
Homework