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1、Unit 13Were trying to save the earth!,Section A 1 1a-2d,The earth is polluted.,Lead-in,air pollution,The factories that burn coal pollutethe air with a lot of black smoke.,n.煤炭,Factories put waste into the river.,water pollution,mobile phone pollution,litter v.乱扔 n.垃圾rubbish waste垃圾，废弃物,People shoul
2、d throw away litter in the bin.,n.垃圾箱,noise pollution,There are more cars on the road.,1a,Here are some words related to different kinds of pollution.Write them in the box below.Then add more words.,noise pollution _,air pollution _,water pollution _,loud music,planes,mobile phones,factories,cars,sm
3、oking,ships,factories,littering,rubbish,building houses,building houses,1b,Listen and complete the sentences.,really dirty,rubbish,fish,litter,waste,government,close down,clean up,Listen again and check()the sentences you hear.,1.We could go fishing in the river.2.The river was really dirty.3.The ri
4、ver has always been the nicest river in this town.4.We should ask the teachers for help.,1c,Role-play the conversation,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 pla
5、y a part in cleaning it up!,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 rive
6、r.,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.Were trying to save the earth!我们正在竭尽全力拯救地球!try
7、 to do=try ones 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 points,2.Here are some words related to different kinds of pollution.be related to 与有关 e.g.I am notrelatedtohim in any way.我和他无任何关系。,3.Everyone in this town
8、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
9、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。,2a,Listen to the interview.Circle the
10、kinds of pollution that Jason and Susan talk about.,land pollution B.air pollutionC.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
11、.,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)ones.,are throwing away,public places,Listen and answer the questions.,1.Who is the interviewer talking to?2.What are the
12、y talking about?3.What other problems do they see?,Susan and Jason.,The environmental problems.,Theres too much rubbish and waste in the streets.,Role-play conversations between Jason and Susan.,2c,The air has become really polluted around here.Im getting very worried.,Yes,I used to be able to see s
13、tars 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 cars,stop using paper towels or napkins（餐巾，餐巾纸）,recycle books and paper,回收利用,2d,Read 2d and complete the chart.,take the bus,subway or ride a bike instead of driving
14、.,bring a bag to go shopping.,use chopsticks or forks at home.,throw rubbish in the bins.,Role-play the conversation,Jason and Susan,what are your ideas for solving these problems?,Yeah,or ride a bike.There are other advantages(优点)of bike riding.Its good for health and it doesnt cost(花费)anything!,We
15、ll,to cut down air pollution,we should take the bus or subway instead of driving.,Great ideas!What about waste pollution?,Me,too.Also,I never take wooden chopsticks or plastic(塑料)forks when I buy takeaway(外卖食品)food.I use the ones at home.,Mmm,I think simple things like bringing a bag to go shopping
16、can help.I started doing that a year ago.,And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.,So together,our actions can make a difference and lead to a better future!,This is turning beautiful places into ugly ones.turn into 把变成,e.g.The icy rain seeme
17、d like to turn into snow.渐渐地冻雨又变成雪花的模样。,Language points,2.Its good for health and it doesnt 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&costtake，spend，pay和cost都可以表示“花
18、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 sp
19、ends 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
20、 lots of money.2.Mona _ 50 yuan on the books just now.3.It usually _ me an hour to do my homework.,cost,spent,takes,4.You should _ some time practising your pronunciation.5.My brother _6,000 yuan for the new computer yesterday.,spend,paid,3.So together,our actions can make a difference and lead to a
21、 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.Were trying _(save)the earth.2.There
22、used to _(be)clean and beautiful.3.There are too many _ for _ to catch(fish).4.Its bad for environment to use _(wood)chopsticks.,to save,be,fish,wooden,fishermen,Make a poster!,The earth is badly polluted.Please make a poster and think of what we can do.,Save the earth!,Homework,1.Copy the new words
23、 and remember them.2.Read the listening materials of 1b,2a.,Unit 13 Were trying to save the earth!,Section A 23a-3b,Revision,Jason and Susan,what are your ideas for solving these problems?,Role-play 2d.,Well,to cut down air pollution,we should take the bus or subway instead of driving.,Yeah,or ride
24、a bike.There are other advantages of bike riding.Its good for health and it doesnt cost anything.,Great ideas!What about waste pollution?,Mmm,I think simple things like bringing a bag to go shopping can help.I started doing that a year ago.,Me,too.Also,I never take wooden chopsticks or plastic forks
25、 when I buy takeaway food.I use the ones at home.,And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.,So together,our actions can make a difference and lead to a better future!,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
26、 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 plasticforks when I buy takeaway food.,The earth is badly polluted.What should we
27、 do to save the earth?,Warming up,Lets 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!,T
28、he 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 paragraph,1.Sharks fin（鱼鳍）soup is famous and expensive all around the world.,
29、2.We have to kill a whole shark to get a bowl of sharks fin soup.,Read the second paragraph,1.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 oceans ecosystem.,n.生态系统,食物链,Read the third paragraph,1.WildAid and the WWF are envir
30、onmental protection groups in China.,2.Sharks fins are good for health.,southern China,70 million,over 90 percent,WildAid and the WWF,3a,Read the passage about sharks and complete the fact sheet below.,3b,Read the passage again and fill in the blanks with the words in the box.,Many people do not rea
31、lize 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 oceans ecosystem will be in danger.,when,so,3.Many think that sharks are too strong to be endangered,_ they are wrong.4._ there are no scientific studies to
32、 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,adj.科学上的，科学的,Retell the passage according to the words below.,1.A shark can no longer swim and slowly dies.鲨鱼不能再游泳然后慢慢死掉。,
33、no longer意思是“不再”e.g.Im no longer a student.我不再是个学生了。,有两个短语和no longer同义，即notany longer和notany more，但他们侧重的方面不同。,Language points,no longer和notany longer侧重时间。e.g.He no longer lives here.=He doesnt 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。)notany more侧重程度和数量e.g.You can drink no more.=You
34、cant 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。),2.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 onlybut 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。,e.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 ch
35、osen.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。,be harmful to 对有害e.g.Smoking is harmful to the health.吸烟有害健康。Playing co
36、mputer games much is harmful to students.电脑游戏玩太多对学生有害。,3.Sharks are at the top of the food chain in the oceans 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 i
37、n 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
38、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
39、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。,Homework,Write 5 measures to protect the
40、 environment.,Unit 13 Were trying to save the earth!,Section A 3Grammar Focus-4c,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 bottle 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 har
41、mful to,at the top of,the oceans 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 oc
42、eans ecosystem.,A lot of people believe that sharks fins are good for health.,Pay attention to the sentences.1.Were 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 sh
43、arks.,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 nowe.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?,Exercise,used to d
44、o 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 oclock.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.,Exerc
45、ise,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
46、 used to work by the workers.,Exercise,结构:has/have+过去分词标志词：already,yet,ever,never,since,fore.g.I havent 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
47、 man before.3.Tom _(work)there since two years ago.,have been,have,heard,has worked,Exercise,4.The twins _(wash)the clothes for an hour.5.He _(play)basketball since three years ago.6.How long _ Sally _(sing)yet?,have washed,has played,has,sung,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,但不能单独作谓语,只能与其他动词构成谓语。常见的有:
48、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 tress like a koala.Tracy could ride a bicycle when she was five years old.You mustnt play with fire.It is dangerous.,Translation.1.我们不能在教室里吃东西。
49、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。,Exercise,We cant eat in the classroom.,You must finish your homework first.,He cant 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
50、project?Eric: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?Eric:I _(think)more than 1,000 people _(come)to help out.Joe:Thats fantastic!I guess everyon
