Unit13 We are trying to save the earth SectionA课件

课件99张PPT。Unit 13Unit 13
We're trying to save the earth!Section A 1
1a-1cEndangered
animals DesertificationNatural
disastersPollutionThe world's problemsHow do you feel?What are these pictures about?Pollution How many kinds of pollution do these pictures show?noise pollutionwater pollutionair pollutionloud music planes building houses mobile phonesrubbish littering ships
factories
cars factories smoking
building housesclose down the factories;
help clean up the river;
take the bus or subway;
ride a bike;
bring a bag to go shopping, throw rubbish in the cans;
turn off the lights when you leave a room;
use paper or reusable bags;
recycle books and paper;
turn off the shower when you wash your hair;
don't use napkins;
rethink,reuse, recycle ... ...Solutions1bListen and complete the sentences.really dirtyrubbishfishlitterwastegovernmentclose downclean upListen again and check (√) the sentences you hear.1. We could go fishing in the river.
2. The river was really dirty.
3. The river has always been the nicest
river in this town.
4. We should ask the teachers for help.√√Listen again and check (√) the sentences you hear.1. We could go fishing in the river.
2. The river was really dirty.
3. The river has always been the nicest
river in this town.
4. We should ask the teachers for help.√√1cRole-play the conversationThe 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!PracticeMake 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?Yes, 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.1. We’re trying to save the earth!
我们正在竭尽全力拯救地球!
try to do =try one’s best to do
努力去做某事。
e.g. Every student should try to study
hard in order to study in a university.
为了进入大学学习，每个学生都应该
努力学习。Language points3. Everyone in this town should play a part in cleaning it up!
play a part in 在……方面起作用
e.g. A good diet plays a large part in
helping people live longer.
健康的饮食在帮助人们长寿方面起着
非常大的作用。play a part 在……中扮演角色
e.g. He was invited to play a part in this TV
play.
他被邀请参加这个电视剧的演出。4. Even the bottom of the river was full of rubbish.
Yes, but people are throwing litter into the river.litter和rubbish都可指“垃圾”，用作不可数名词。
rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收。
e.g. Throw the rubbish out.
把垃圾扔出去。　　The room is full of rubbish.
房间里堆满了垃圾。　　Pick up your litter after a picnic.
野餐后将废弃物收拾好。 Quiz汉译英。
你在努力做什么？
他在工作中起到极其重要的作用。
这些问题都是密切相关的。 What are you trying to do? He plays an important part in the work. These problems are closely related.Section A 1
1a-1c
coal
ugly
advantage
cost
wooden
plastic
takeaway
bin
n. 煤；煤块
adj. 丑陋的；难看的
n. 优点；有利条件
v. 花费
adj. 木制的；木头的
n. 塑料；塑胶
n. 外卖食物
n. 垃圾桶Help save the earth We must think of better ways to treat our planet in future.
What do you usually do ?
Are you a friend of the Earth?

Take this quiz.START
You drink a can of cola. What do you do?I throw away cans.I recycle cans.You throw away the cans.
That’s bad for the Earth.You recycle the cans.
That’s good for the Earth.
There are a lot of old newspapers at your home. What do you do?I throw the old newspapers away.I recycle the old newspapers.You throw old newspapers away.
You waste paper.
That’s bad for the Earth.You recycle old newspapers.
You save paper.
That’s good for the Earth.
You go shopping. What do you do?I use a lot of new plastic bags.I use my own bag.You use a lot of new plastic bags. That’s bad for the Earth.You use your own bag.
That’s good for the Earth.
When you write on a piece of paper, what do you do?I write on one side only.I write on both sides.You use paper on one side only.
That’s bad for the Earth.You use paper on both sides.
That’s good for the Earth.2aListen to the interview. Circle the kinds of pollution that Jason and Susan talk about. land pollution B. air pollution
C. noise pollution D. water pollution2bListen 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 carspollute3. 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) ones. are throwing awaypublic placesListen and answer the questions.1. Who is the interviewer talking to?
2. What are they talking about?
3. What other problems do they see?Susan and Jason.The environmental problems.There’s too much rubbish and waste in the streets.Role-play conversations between Jason and Susan.2cThe 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… What should we do to save the earth?Turn off the lights when you leave a room.关掉stop riding in carsstop using paper towels or napkins（餐巾，餐巾纸）recycle books and paper回收利用2dRead 2d and complete the chart.take the bus, subway or ride a bike instead of driving. bring a bag to go shopping.use chopsticks or forks at home.throw rubbish in the bins.This is turning beautiful places into ugly ones.
turn… into… 把……变成……e.g. The icy rain seemed like to turn into
snow.
渐渐地冻雨又变成雪花的模样。 Language points辨析： turn, get与become
(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.
(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。 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.
山里的树叶已经变成了棕色。
：
Her mother ______ angry when she heard the news.
It's _____ darker and darker outside.
The milk has ______bad.练习becamegettingturned 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 2000 words.
cut 后接off, into,up, in 的不同：拓展2. It’s good for health and it doesn’t cost anything!
cost v. 花费；使付出
指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。 e.g. The new shirt cost Mr Wang 200 yuan.
王先生花了200元买了新衬衫。
How much does the new computer
cost? 新电脑花了多少钱？take, spend, pay & cost
take，spend，pay和cost都可以表示“花
费”，但它们的用法各有不同。
1) take多表示花费时间，常用于It takes sb. some time to do sth.这一句型中，其中it作形式主语。
e.g. It usually takes me 40 minutes to
cook the dinner.2) spend多表示花费时间和金钱，主语通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend(s) some time / money (in) doing sth.两种句型。
e.g. David spent 2,000 yuan on the new
machine.
My father spends an hour (in)
watching the news on TV every day.3) pay多表示花费金钱，主语通常是人，常用于sb. pay(s) some money for sth.句型。
e.g. Tommy paid 20 yuan for his
breakfast yesterday.
4) cost多表示花费金钱，主语通常是物，常用于sth. cost(s) (sb.) some money.句型。
e.g. The new dress cost Linda 88 yuan.根据句意用take, spend, pay或cost的适当
形式填空。
1. That new car ________?them lots of money.
2. Mona __________ 50 yuan on the books just now.
3. It usually _______? me an hour to do my homework.cost??spent?takes4. You should __________? some time practising your pronunciation.
5. My brother _______?6, 000 yuan for the new computer yesterday.spendpaid3. So together, our actions can make a difference and lead to a better future!
make a difference (to…)
表示(对……)产生影响或作用
e.g. Do you think his words would make
any difference to the final decision?
你认为他的话会对最后的决定产生影
响吗？ The new teacher always encourages little Tom. This has made a big difference to him.
新来的老师总是鼓励小汤姆，这对他影响很大。用动词的适当形式填空。
1. We’re trying _______ (save) the earth.
2. There used to _____ (be) clean and beautiful.
3. There are too many ____ for __________
to catch (fish).
4. It’s bad for environment to use
_________ (wood) chopsticks.to savebefishwoodenfishermenMake a poster!The earth is badly polluted. Please make a poster and think of what we can do.Save the earth!Section A 3
3a-3bRevisionJason and Susan, what are your ideas for solving these problems?Role-play 2d.Translate these sentences into English.1. 甚至是河底都满是垃圾。
2. 这个镇上的每个人都应该参与清扫。Even the bottom of the river was full of rubbish.Everyone in this town should play a part in cleaning it up. 3. 骑自行车有其它的优点。
4. 我买外卖食品从来不拿木筷子和塑料叉
子。There are other advantages of bike riding.I never take wooden chopsticks or plastic
forks when I buy takeaway food. The earth is badly polluted.
What should we do to save the earth?Warming upLet’s take action (采取行动)Turn off the lights
when you leave a room.Recycle books and paper. Take buses instead of driving cars.There are some animals are endangered. We should do something to protect the animals and the environment! Save the earth!
Save the animals!The zoos provide homes for many
endangered animals. 1. Have you ever seen
a shark（鲨鱼）?
2. What do you know
about sharks?Discuss with your partner:Sharks are endangered, read the
passage and judge the sentences.Read the first paragraph1. Shark’s fin（鱼鳍）soup is famous and
expensive all around the world.2. We have to kill a whole shark to get a
bowl of shark’s fin soup.×√Read the second paragraph1. People cut off sharks’ fins and throw
the sharks back into the ocean.2. Sharks are in the bottom of the food chain
in the ocean’s ecosystem.√×n. 生态系统食物链Read the third paragraph1. WildAid and the WWF are environmental
protection groups in China.2. Shark’s fins are good for health.××southern China70 millionover 90 percent WildAid and the WWF3aRead the passage about sharks and complete the fact sheet below.3bRead the passage again and fill in the blanks with the words in the box.so although if but when 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.whenso3. Many think that sharks are too strong
to be endangered, _____ they are wrong.
4. _________ 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.butAlthoughifadj. 科学上的，科学的1. This method is not only cruel, but also
harmful to the environment.
这种方法不但残忍而且对环境有害。not only…but also…
用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”; 其中的also有时可以省略。Language pointse.g. She not only plays well, but also writes
music.
她不但很会演奏，而且还会作曲。
Not only men but also women were
chosen.
不仅仅是男的，女的也有被选中的。 若连接两个成分作主语，其谓语通常与靠近的主语保持一致。
e.g. Not only you but also he has to leave.
不只是你，他也得离开。 not only放在句首，后接句子时要用倒装结构。
e.g. Not only had the poor man been fined,
but also he had been sent to prison.
这个可怜的人不仅被罚款，而且还被
送进了监狱。 harmful 形容词，意为“有害的”。常构成短语
be harmful to “对……有害的”。
Staying up often is harmful to your health. 经常熬夜对你的健康有害。
【拓展】
harm 名词，意为“害处”。常用于构成短语
do harm to “对……有害”，相当于be harmful to.
Too much smoking does harm to his health. = Too much smoking is harmful to his health. 吸烟过多对他的健康有害。改为同义句。
Reading in the sun does harm to our eyes.
Reading in the sun ___ _____ _______ our eyes. is harmful to2. A shark can no longer swim and slowly
dies. 鲨鱼不能再游泳然后慢慢死掉。no longer意思是“不再”
e.g. I’m no longer a student.
我不再是个学生了。 有两个短语和no longer同义，即not…any longer和not…any more，但他们侧重的方面不同。no longer和not…any longer侧重时间。
e.g. He no longer lives here.
= He doesn’t live here any longer.
他不在这儿居住了。(一个时间以前他住
在这儿，过了这个时间，他就离开了。)
not…any more侧重程度和数量
e.g. You can drink no more.
= You can’t drink any more.
你不能再喝了。(喝酒的量到了一定程
度，不能再继续下去了。) 3. Sharks are at the top of the food chain in
the ocean’s ecosystem.
鲨鱼位于海洋生物系统食物链的顶部。at the top of 在……最高地位; 用最高[最大]的(速度, 声音等)
e.g. I looked at the top of his head, his hair
shiny and parted smoothly.
我看他的头顶, 头发闪亮且平滑的分
开。
He shouted at the top of his voice in order that he might be heard.
他尽力大声叫喊, 以便别人能听见。4. If their numbers drop too low, it will
bring danger to all ocean life.
如果它们的数目降至过低，会给所有
海洋生物带来危险。
此句复数形式的numbers表达全海洋中鲨 鱼的总量。当表示数值的高或低时，number要用high或low修饰。e.g. In that country, the number of children
going to school is higher in cities than in
towns and village.
在那个国家，城市儿童入学人数比乡镇 及农村要高。
常与number搭配的动词有grow, fall等。
e.g. The number of families that own cars
has been growing quickly recently.
近来拥有轿车的家庭数量增长很快。5. Environment protection groups around
the world, such as WildAid and the WWF,
are teaching the public about “finning”.
世界各地的环境保护组织，如野生救援协
会和世界自然基金会，都在教育公众有关
“猎翅”的行为。
1) 句中fin本为名词，指 “鱼鳍”。此句中的
finning由动词化的fin（割鲨鱼鳍以获取
鱼翅）的-ing形式转化而成，指课文中所
陈述的 “猎翅”这一行为。2) WildAid和WWF组织
WildAid（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，1999年注册成立，其宗旨是保护及救助世界范围内的野生动物；WWF（世界自然基金会）英文全称为World Wide Fund for Nature，成立于1961年，是享有国际盛誉，全球最大的独立性非政府环境保护组织之一。III. 根据汉语提示完成句子。
1. 我们必须采取行动来阻止他们。
We must _____ ______ to stop them.
2. 我从没听说过这个人。
I have never ____ ____ such a man.
3. 我们乐意尽力帮你摆脱困境。
We are glad to do what we can do ___ ___ you___.
4. 到目前为止，我已经交了二十个朋友了。
____ ____, I have made twenty friends.
5. 实际上，她从没去过那儿。
____ ____, she has never been there. In fact take actionheard ofto help outSo far