(共123张PPT)
初中英语人教版九年级全一册
Unit 13
We're trying to save the earth!
Section A (1a-1c)
学习目标
Key words & phrases:
litter, bottom,fisherman, environmental protection
Key sentences:
1. People are throwing litter into the river.Even the bottom of the river is full of rubbish.
2. Everyone in this town should play a part in cleaning it up!
Enjoy a song
Lead-in
water
pollution
noise
pollution
land
pollution
air
pollution
What kinds of pollution do you know
pollution
Brainstorm
Look at the following picture and guess what kind of pollution it is.
Guessing game!
air pollution
water pollution
noise pollution
land pollution
Do you know what caused the pollution
Free talk
What should we do to save the earth
litter [ l t (r)]
n. 垃圾；
废弃物
litter [ l t (r)]
v. 乱丢
= throw litter
New words
bin [b n]
n. 垃圾箱
fisherman
[ f (r)m n]
n. 渔民；钓鱼的人
pl. fishermen
1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
loud music cars rubbish planes
littering ships factories smoking
building houses mobile phones
noise pollution
____________
____________
____________
____________
cars
air pollution
___________
___________
___________
___________
water pollution
____________
____________
____________
____________
loud music
planes
mobile phones
building houses
factories
cars
smoking
building houses
ships
factories
littering
rubbish
What do you think of these kinds of pollution
noise pollution
water pollution
air pollution
Listen and complete the sentences.
What was the problem The river was _____________. Even the bottom of the river was full of _________. There were no more ________ for fishermen to catch.
What caused the problem People are throwing ____ into the river.
Factories are putting _____ into the river.
How should the problem be solved We should write to the _____________ and ask them to __________ the factories. Everyone should help to ________ the river.
really dirty
rubbish
fish
litter
waste
government
close down
clean up
1b
Tony and Mark’s hometown
used to be
now
The river used to be clean and beautiful.
Now, the river is
The bottom of the river is
There are no more fish in it.
Children used to go swimming in it.
There used to be fish in the river.
very dirty.
full of rubbish.
Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
The river was dirty. Even the bottom of the river was full of rubbish.
But it used to be so clean!
Yes, but people are throwing litter into the river.
Everyone in this town should play a part in cleaning it up!
1c
Practice
Make conversations using the pollution in 1a.
The river has always been the nicest river in this town.
Yes, it used to be so clean.
What caused the problem
But I was there last weekend and the river was really dirty.
Factories are also putting waste into the river.
People are throwing litter into the river.
What should we do
Everyone in this town should play a part.
We should write to the government and ask them to close down the factories.
What else can we do
Everyone should help to clean up the river.
初中英语人教版九年级全一册
Unit 13
We're trying to save the earth!
Section A (2a-2d)
学习目标
Key words & phrases:
coal,ugly, advantage, cost,wooden, plastic, takeaway,bin
Key sentences:
1. The air has become really polluted around here.
2. Our actions can make a difference and lead to a better future!
air pollution
The factories that
burn coal pollute
the air with a lot of
black smoke.
n. 煤炭
Factories put waste into the river.
water pollution
land pollution
noise pollution
2a
Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
land pollution B. air pollution
C. noise pollution D. water pollution
2b
Listen again and complete the sentences.
1. The air is badly polluted because there are ___________ on the road these days.
2. Factories that burn coal also ________ the air with a lot of black smoke.
more cars
pollute
3. There is also too much rubbish and waste. People _________________ things every day.
4. People are also littering in ____________ like parks. This is turning beautiful places into ugly (丑陋的) ones.
are throwing away
public places
Let's enjoy the video
Use the information in 2a and 2b to role-play conversations between Jason and Susan.
2c
The air has become really polluted around here. I’m getting very worried.
Yes, I used to be able to see stars in the sky.
The problem is that…
The earth is polluted.
What should we do to save the earth
Turn off the lights when you leave a room.
Take buses instead of driving cars.
Stop using paper towels or napkins.
Recycle books and paper.
Interviewer: Jason and Susan, what are your ideas for solving these problems
Jason: Well, to cut down air pollution, we should take the bus or subway instead of driving.
Susan: Yeah, or ride a bike. There are other advantages of bike riding. It’s good for health and it doesn’t cost anything!
Role-play the conversation.
2d
Interviewer: Great ideas! What about waste pollution
Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago.
Jason: Me, too. Also, I never take wooden
chopsticks or plastic forks when I buy takeaway food. I use the ones at home.
Susan: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.
Interviewer: So together, our actions can make a difference and lead to a better
future!
Pollution Ways to solve the problem
air pollution
waste pollution
Take the bus, ______ or ride a bike instead of driving.
Bring a ____ to go shopping.
Never take _____ chopsticks or _____ forks when buying takeaway food.
Throw ______ in the bins.
subway
bag
wooden
plastic
rubbish
Listen and complete the chart.
Pollution Ways to solve the problem
air pollution
waste pollution
Take the bus, subway or ride a bike instead of driving.
Bring a bag to go shopping.
Never take wooden chopsticks or plastic forks when buying takeaway food.
Throw rubbish in the bins.
Read 2d and complete the chart.
Group work
Make a survey.
Reporter:What will you do for saving the earth
S1:...
S2:...
S3:...
S4:...
Love the earth, love ourselves.
1. turn, get与become辨析
(1) become 多指身份，职位等的变化，它强调
变化过程已经完成，后面可以接名词
或者形容词。
He becomes a teacher. 他成为了一名老师。
(2) get多用于口语，表示一种变化过程，强调
的是“渐渐变化”，后常接形容词的比较级形式。
Language points
In winter the days get shorter.
冬天白天渐渐变短。
(3) turn 指的是在颜色和性质等方面与以前的完全不同，强调变化的结果。
leaves turned brown in the mountains.
山里的树叶变成了棕色。
2. cut down, 意为“减少”； 是“动词+副词”结构的短语，后面所带的宾语为名词时，宾语可以位于down的前面或后面；为代词时只能位于down前面。
You'd better cut the article down to about 2,000 words. 你最好把这篇文章减少到2000字左右。
拓展
cut off 切断；切除
cut into 把......切成......
cut up 切碎
cut in 插队
花费 主语 表示内容
spend 人 宾语可以是钱，精力，时间等。
cost 物或事 后接life，money，health，time等，侧重指花费的代价。
take 事或事 宾语是时间。
辨析：spend, cost, take, pay
花费 主语 表示内容
pay 人 “支付”， 作及物动词，可以是 pay sb. 或 pay some money；作不及物动词，常接for，for表支付的原因。
初中英语人教版九年级全一册
Unit 13
We're trying to save the earth!
Section A (3a-3c)
学习目标
Key words & phrases:
shark,fin,cruel,harmful,be harmful to,at the top of,chain,the food chain,ecosystem,industry,law,scientific
Key sentences:
1.But do you realize that you are killng a whole shark each time you enjoy a bowl of shark fin soup
2. But in fact ,around 70 million sharks are caught and traded in this industry every year.
The shark! Today!
Lead in
shark/ ɑ:(r)k / n. 鲨鱼
fins/fInz/ n.（鱼）鳍
new words & expressions
chain [t e n] n.
链子；链条
cruel [kru: l] adj.
残酷的；残忍的
the food chain [t e n]
食物链
at the top of
在……顶部或顶端
at the top of
the food chain
ecosystem
[ i:k s st m]
n. 生态系统
WildAid [ wa lde d ]
野生救援协会（美国）
WWF (World Wide Fund for Nature)
世界自然基金会
industry [ nd stri]
n. 工业；行业
science [ sa ns]
n. 科学
scientific [ sa n t f k]
adj. 科学的；科学上的
scientific studies
科学研究
harmful [ hɑ:(r)mfl]
adj. 有害的
be harmful to
对……有害
e.g. Smoking is harmful to our health.
Free talk
What do you know about sharks
Do you know they are endangered
Have you ever heard about shark fin soup
What happens to the shark
Pre-reading
the shark is caught (catch) by people.
First,
the fins are cut (cut) off by people.
Next,
切除
the shark fins are cooked (cook) into
the shark fin soup by people.
鱼翅羹
Then,
the shark without fins is thrown
(throw) back into the ocean by people.
扔回到…...
Finally,
What will happen to the shark
What should we do
Problem
Facts
Solution
Skimming and matching
While-reading
the title
key words
how
facts
key words
solution
Read Para 1 and make T for true or F for false.
F
T
( )1. Shark fin soup is famous and expensive all around the world.
( ) 2. You’re killing a whole shark when you enjoy a bowl of shark fin soup.
in southern China.
= each time
=
While-reading
Scanning and answering
para.1
Find out the topic sentence in this paragraph.
para.2
Scanning and finding
While-reading
This is not only cruel,
but also harmful to the environment.
fact
para.2
Scanning and finding
While-reading
When people catch sharks, they cut off their
fins and throw the sharks back into the ocean.
fact
What’s the fact
This is not only cruel,
but also harmful to the environment.
para.2
cruel
harmful
Why is it cruel
When people catch sharks, they cut off their
fins and throw the sharks back into the ocean.
Without a fin, a shark can no longer swim
and slowly dies.
Why is it harmful
to the environment
1.Sharks are at the top of the food chain
in the ocean’s ecosystem.
2.If their numbers drop too low, it will bring
danger to all ocean life.
fact
This is not only cruel,
but also harmful to the environment.
para.2
Sharks can never be endangered. ( )
F
Read Para 2 again and make T for true or F for false:
para.2
in fact
2. The numbers of some kinds of sharks
have fallen (fall) by over 90 percent
in the last 20 to 30 years.
1. Around 70 million sharks are caught (catch)
and traded (trade) in this industry every year.
Sharks can never be endangered. ( )
F
When…catch,
cut off, throw…back into
Without,
no longer
2. If, bring danger to…
1. at the top of
the food chain
1. 70:
are caught & traded
2. 90: The numbers of,
have fallen,
in the last 20 to 30 years
…not only cruel,
but also harmful …
Fact
2 different opinions
Many believe…
never be endangered.
Scanning and
mind-mapping
When people catch sharks, they cut off their
fins and throw the sharks back into the ocean.
cruel
Without a fin, a shark can no longer swim
and slowly dies.
harmful
1. Sharks are at the top of the food
chain in the ocean’s ecosystem.
2. If their numbers drop too low, it will
bring danger to all ocean life.
2. The numbers of some kinds of
sharks have fallen by over 90
percent in the last 20 to 30 years.
1. Around 70 million sharks are
caught and traded in this industry
every year.
fact
two
different
opinions
endangered
①
②
&
1. What are the names of the two environmental protection groups
1). They are teaching the public about “finning”.
2). They have even asked governments to develop
laws to stop the sale of shark fins.
2. What are they doing to protect the sharks & What have they done to protect the sharks
para. 3
Some people like to eat shark's fin soup, especially in __________ China. In fact, no scientific studies have shown that shark fins are ________ for health. But getting the shark's fin isvery_____ . When people ____ sharks, they cut off their fins and ______ the sharks back into the ocean.
southern
cruel
Fill in the blanks according to the passage.
catch
throw
good
Post-reading
The shark slowly _______ because it can't ______ without a fin. And it is also _______ to the environment. Sharks are at the ___ of the food chain. If the number of sharks _____ too low, it will break the balance of the nature. Please say no to eating shark fin soup, and take actions to _____ the sharks!
dies
swim
harmful
top
drops
save
Read the passage about sharks and complete the fact sheet below.
3a
Where shark fin soup is popular
Number of sharks caught and traded every year
How much the numbers of some kinds of sharks have fallen in the last 20 to 30 years
Two environmental groups against "finning"
in southern China
70 million
over 90 percent
WildAid and the WWF
1. Many people do not realize they are killing a
whole shark _____ they enjoy a bowl of shark
fin soup.
2. Sharks are at the top of the food chain, ______
if their numbers drop, the ocean's ecosystem
will be in danger.
Read the passage again and fill in the blanks with the words in the box.
so
when
3b
so although if but when
Many think that sharks are too strong to be
endangered, _________ they are wrong.
_________ there are no scientific studies to support this, a lot of people believe that shark fins are good for health.
5. Sharks may disappear one day ______ we do not do something to stop the sale of shark fins.
but
Although
if
Save the sharks!
Save the wild animals!
No sale, no killing!
Save the earth!
Save the animals!
Save our-selves!
Summary
初中英语人教版九年级全一册
Unit 13
We're trying to save the earth!
Section A (GF-4c)
学习目标
Key words & phrases:
take part in ,afford, turn off, reusable, pay for, take action, transportation
Key sentences:
1.Have you ever taken part in an environmental project
2. We should help save the sharks.
Review different tenses
Revision
不同种类的污染
2. 河底
3. 把垃圾扔到河里
4. 在……中起作用
different kinds of pollution
the bottom of the river
throw rubbish into the river
play a part in
I. Check if you know these phrases.
5. 在中国南部
6. 对……有害
7. 在……顶部
8. 海洋生态系统
in southern China
be harmful to
at the top of
the ocean's ecosystem
II. Translate the sentences.
1. 甚至是河底都满是垃圾。
2. 这个方法不仅残酷还对环境有害。
Even the bottom of the river was full of rubbish.
This method is not only cruel, but also harmful to the environment.
3. 鲨鱼处于海洋食物链的顶部。
4. 许多人相信鱼翅对健康有好处。
Sharks are at the top of the food chain in the ocean's ecosystem.
A lot of people believe that shark fins are good for health.
Retell
Retell the passage about sharks in 3a
What's the sharks' problem
Why are they endangered
Some facts and numbers about sharks at present
How to save the sharks
Reason:
Comment:
Shark fin soup:
What people do:
Result:
Sharks’ situation:
Environmental protection groups (Wild Aid & WWF):
scientific studies:
at the top of food chain, ecosystem, numbers drop, bring danger to...
popular, southern China
catch, cut off, throw… back into ...
without, can no longer swim, slowly dies
not only cruel , but also harmful to
be endangered, although…
② numbers, have fallen, 90%, in the last 20 to 30 years.
② teach … about …
① ask...to...laws to stop…
①70 million,are caught, traded, industry
No…, show…, be good for...
Pay attention to the sentences.
1. We're trying to save the earth.
2. The river used to be so clean.
3. The air is badly polluted.
4. No scientific studies have shown that shark fins are good for health.
5. We should help save the sharks.
Present progressive
used to
Passive voice
Present perfect
Grammar Focus
Modal verbs
现在进行时: Present progressive
结构: be (am/is/are) + v.-ing
标志词：look, listen, now, right now…
e.g. Look! The boy is crying.
定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作。
What a fine day today!
Look! What are they doing
Exercises
used to do sth. 表示过去常常做某事, 而现
在往往不做了, 后接动词原
形。
be used to doing sth. 表示习惯于做某事
e.g. I used to get up at six o'clock.
Joe is used to drinking a cup of coffee every morning.
used to do与be used to doing
Translation.
1. 她过去常常周末和朋友闲逛。
She used to hang out with friends on weekends.
2. 他习惯于每天晚上睡得很晚。
He is used to staying up late.
Exercise
被动语态：Passive voice
定义：表示主语是动作的承受者，即行
为动作的对象的一种语态。
结构：be + 过去分词
e.g. A new school was built last year.
Our classroom is cleaned every day.
Translate the sentences by using Passive voice.
1. 刚才一些老年人参观了博物馆。
2. 工人们使用不同种类的机器工作。
The museum was visited by some old people just now.
Different kinds of machines are used to work by the workers.
Exercises
结构: has/have + 过去分词
标志词：already, yet, ever, never, since,
for…
e.g. I haven’t finished my homework yet.
定义：表示动作已经完成, 但对现在造成影
响; 或者表示从过去某一时间开始一
直延续到现在并还可能持续下去的
动作。
现在完成时: Present perfect
Complete the following sentences.
I _________ (be) in Beijing for two years.
2. I _____ never _____ (hear) of that
man before.
3. Tom __________ (work) there since
two years ago.
have been
have
heard
has worked
Exercises
4. The twins ___________ (wash) the clothes for an hour.
5. He _________ (play) basketball since three years ago.
6. ____ Sally _______ (finish) her homework yet
have washed
has played
Has
finished
1. 情态动词本身有一定的词义，表示说话人的情绪、态度或语气，不能单独作谓语, 只能与其他动词一起构成谓语。
常见的有: can (could), may (might), must, need, shall (should), will (would)等。
情态动词
2. 情态动词无人称和数的变化，后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式，可用来表达更加客气、委婉的语气。
e.g. Ken can climb up the tree like a
koala.
Tracy could ride a bicycle when she was five years old.
You mustn't play with fire. It is
dangerous.
Translation.
1. 我们不能在教室里吃东西。
2. 首先你必须完成作业。
3. 他现在不可能在家。
4. 她一定知道这个问题的答案。
Exercises
We can't eat in the classroom.
You must finish your homework first.
He can't be at home now.
She must know the answer to this question.
4a
Fill in the blanks with the correct forms of the verbs in brackets.
Joe: _____ you ever ______ (take) part in
an environmental project
Ken: Yes, I have. I ______ (help) with a
Clean-Up Day last year. It was
__________ (consider) the biggest
clean-up project this city ____ ever
____ (have).
Have
taken
helped
considered
had
had
参加
Joe: How many people ____ (take) part
Ken: I _____ (think) more than 1,000
people ______ (come) to help out.
Joe: That’s fantastic! I guess everyone in
this city is ______ (try) to improve
the environment.
Ken: Yes, we can't afford to ____ (wait)
any longer to take action!
took
think
came
trying
wait
v. 承担得起(后果); 买得起
4b
Fill in the blanks with the appropriate
modal verbs from the box.
People __________ think that big things
______ be done to save the earth. Many
forget that saving the earth begins with
small things. For example, you ____ save
may/might
must
can
can would could
have to should must
may/ might
electricity by turning off the lights when
you leave a room. You ______ also use
reusable bags instead of plastic bags. I think it's a great idea that you now ______ pay for plastic bags in some stores. And instead of driving to school or work, you __________ ride your bike or walk. If it's far, you __________ take the bus. All these
could
have to
can/should
can/could
关掉
adj.可重复使用的
付费;付出代价
small things ______ add up and become big things that _________ improve the environment. Let's take action now!
could
would/can
采取行动
4c
Make a list of things that people can do to help the environment and discuss your list with your partner.
use public transportation (n.交通运输);
turn off the lights when you leave a room;
use reusable bags instead of plastic bags;
ride your bike or walk to school or work;
stop using paper napkins(餐巾纸);
recycle books and paper
…
Discussion
I think that everyone should use public transportation.
I disagree. It's difficult for parents with young children to use public transportation…
1. We can't afford to wait any longer to take action!
afford v. 承担得起（后果）; 买得起
afford to do sth. (常与can, be able to连用) 买得起；有足够的……
e.g. We can't afford to pay such a price.
我们付不起这个价钱。
Dancing affords us pleasure.
跳舞给我们带来快乐。
Language points
2. …save electricity by turning off the lights when you leave a room.
turn off 关掉
e.g. Please turn the television off
before you go to bed.
睡觉前请关掉电视。
turn around 转身
turn up 调高(音量)
turn down 调低(音量)； 拒绝
turn into 变成；进入
turn on 打开；发动
turn off 关掉；关闭
turn out to be 结果是
turn over 移交
拓展: turn相关短语
辨析：join, join in 和take part in
to
join 加入组织，团体，党派等，有作为其中的一个成员的含义;
后面也可以加表示人的名词，表示和某人一起参加某活动。
join in 加入一种具体活动。
take part in 指参加会议或群众性活动等，着重说明句子主语参加该项活动并在活动中发挥作用。
Will you join us in the discussion
你会参加我们的讨论吗？
She joined the Young Pioneers.
她加入了少先队。
Why didn't you join in the talk last night
昨晚你为什么没参加座谈？
Did you take part in the sports meet
你参加运动会了吗？
Thank you!
