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1、Unit 13We are trying to save the earth.,Section A 1a-3b,serious pollution,We are harming our planet in so many ways.,伤害,air pollution,soil pollution,water pollution,the earth song by Michael Jackson!,Factories pour dangerous gases into the air.,Cars also pour dangerous gases into the air.,tail gas,a
2、ir pollution!,The weather is always foggy.We cant see the blue sky.We cant breathe the fresh air.Do you know why?,Factories produce too much dangerous smoke.The traffic produces too many fumes.Some people smoke in public places.,Natural resources are disappearing at a dangerous rate.,以危险的速度,Group On
3、e,Group Two,Group Three,desert,Help save the earth,We must think of better way 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.Thats bad for th
4、e Earth.,You recycle the cans.Thats 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.Thats bad for the Earth.,You recycle old newspapers.You save paper.Thats
5、 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.Thats bad for the Earth.,You use your own bag.Thats 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 bo
6、th sides.,You use paper on one side only.Thats bad for the Earth.,You use paper on both sides.Thats good for the Earth.,close down the factories;help to 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 roo
7、m;use paper or resusable bags;recycle books and paper;turn off the shower when you wash your hair;dont use napkins;rethink,reuse,recycle.,solutions,industryharmfulcostwoodenplasticaffort,n.工业adj.有害的v.花费adj.木制的adj.塑料的v.支付的起,Words and expressions,make a differencetake part inturn offpay forcut downlea
8、d to,起作用；有影响参加关掉付费；付出代价减少导致,Words and expressions,Were trying to save the earth.我们在努力拯救地球。The rive used to be so clean.这河流过去是如此的清澈。The air is badly polluted.空气被严重污染。The method is not only cruel,but also harmful to the environment.这种方法不仅残酷，而且对环境也有害。,Sentences,基础预习写出下面单词的意思litter_ bottom_fisherman_ugl
9、y_cost_plastic_coal_advantage_wooden_,把下面的短语与汉语意思连起来。make a diffenencecut downlead to be full of play a part in,导致起作用减少参与充满,Here are some words related to different kinds of pollution.Write them in the box below.Then add more words.,1a,noise pullotion,air pollution,water pollution,Listen and complet
10、e the sentences.,1b,really dirty,rubbish,fish,litter,waste,government,close down,clean up,Watch and read,Role-play the conversation.Then make your own conversations about the kinds of pollution in 1a.,1c,2a,Listen to the interview.Circle the kinds of pollution that Jason andSusan talk about.,A.land
11、pollution B.air pollution C.noise pollution D.water pollution,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.3.There is also too much rubbish and waste.People _things away every day.4.People are also littering
12、 in_ like parks.Th is turns beautiful parks into ugly places.,more car,pollute,are throwing away,public places,2b,Listen again and complete the sentences.,Use the information in 2a and 2b to role-play conversations between Jason and Susan.,2c,Interviewer:Jason and Susan,what are your ideas for solvi
13、ng 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.Other advantages of bike riding are that its good for health and it doesnt cost anything!,2d,Role-play the conversation.,Interviewer:Great ideas!What about waste pollu
14、tion?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 cans and keep public places c
15、lean and beautiful for everyone.Interviewer:So together,our actions can make a difference and lead to a better future!,Watch and read,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。,Language Points,In winter the days
16、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.Its _ darker and darker outside.The milk has _bad.,练习,became,getting,turned,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。
17、Youd better cut the article down to about 2000 words.cut 后接off,into,up,in 的不同：,拓展,辨析：spend,cost,take,pay,1.Do you take exercise everyday?Yes,I always _ thirty minutes after supper.A spend B cost C take D pay2.I _ 300 yuan for the bike.A took B spend C cost D paid,用方框中所给词的适当形式填空。1.Dont throw _(垃圾)eve
18、rywhere.2.In winter,many people burn _(煤)to keep warm.3.The police found a body at the _(底部)of the lake.4.The _(花费)of living in big cities is very high.5.He keeps a rabbit in a big _(木制的)box.,cost,wooden,coal,bottom,litter,1.He _ go out with his parents,but nowhe _ stay at home alone.A.use to;is use
19、d to B.is used to;used to C.use to;used to D.is used to;is used to2.The interesting book _ me 10 yuan.A.took B.paid C.spend D.cost,Choose the best answer.,3.We must do something useful to _ pollution.A.cut off B.cut up C.cut down D.cut in4.Smoking can _ lung cancer.youd bettter give it up.Awork on B
20、lead to Ctake away Dput out,5.What are the _ of bike riding?-It can help cut down air pollution.Aadvantage Breasons Cresults Dideas,1.多一个人少一个人无所谓。One person wouldnt _ _ _.2.这个木箱时装满了书。The _ box _ _ _ books.3.不健康的饮食对这种疾病的传播起一定的作用。Unhealthy foods _ _ _ _ the spread of the disease.4.这条小路通向公园。The path _
21、_ the park.5.我错拿了你的包。I took your bag _ _ mine by mistake.,wooden is full of,make a difference,lead to,paly a part of,instead of,Read the passage about sharks and complete the fact sheet below.,3a,Many have heard of sharks fin soup.Thisfamous and expensive dish is especiallypopular in southern China.
22、But do you realizethat youre killing a whole shark each timeyou enjoy a bowl of sharks fin soup?When people catch sharks,they cut off theirfins and throw the shark back into the ocean.,Without a fin,a shark can no longer swim and slowly dies.This method is not only cruel,but also harmful to the envi
23、ronment.Sharks are at the top of the food chain in the oceans ecosystem.If their numbers drop too low,it will bring danger to all ocean life.Many believe that sharks can never be endangered because they are the strongest in their food chain.,But in fact,around 70 million sharks are caught and traded
24、 in this industry every year.The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.,Environmental protection groups around the world,such as WildAid and the WWF,are teaching the public about“finning”.They have even asked governments to develop laws to stop the
25、 sale of sharks fins.So far,no scientific studies have shown that sharks fins are good for health,so why eat them?Help save the sharks!,Lets do this to review the text!,Some people like to eat sharks fin soup,especially in _China.But getting the s harks fin is very _.When people catch sharks,they _
26、_their fins and throw the sharks into the ocean.The shark slowly dies because it cant _ without the fin.And it is also _ to environment.Sharks are at the _ of the food chain.If the number of sharks drops too low,it will break the balance of nuture.Please say no to eating the shark fin soup,and take
27、action to save the sharks!,southern cruel cut off swim harmful top,Lets learn some,language points,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”。常用构成短语do harm to“对有害”，相当于be harmful to.Too much smoking does harm to his health.=T
28、oo 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 to,辨析：join,join in 和take part in,to,Will you join us in the discussion?你参加我们的讨论吗？She joined the Young Pioneers.她加入了少先队。Why didnt you join in the talk las
29、t 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？,1.Have you _ a club?Yes,Im in a swimming club and I often _ the swimming training.A.joined;take part in B.joined;join C.taken part in;join D.taken part in;join in 2.Were going for a picnic.Would you like to_ us?Why not?Lets go!A.atte
30、ndB.join C.join inD.take part in,afford是动词，意为“买得起,担负得起”，通常与can,could,be able to连用,多用于否定句中。They couldnt afford$50 for a ticket.他们拿不出50美元买一张票。afford后面常跟带to的动词不定式。We cant afford to go abroad this summer.今年夏天我们没有足够的钱出国。例句：Miss Taylor never wastes money on anything too expensive,even though she can _to.S
31、he has donated much of the money she saved to charities.A.affordB.allow C.remind D.pay,1.Many people do not realize they are killing a whole shark _they enjoy a bowl of sharks fin soup.2.Sharks are at the top of the food chain,_if their numbersdrop,the oceans ecosystem will be in danger.,Read the pa
32、ssage again and fill in the blanks with the words in the box.,so,when,3b,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
33、something to stop the sale of shark fins.,but,Although,If,练习题,用方框中词的适当形式完成下面的句子。(1)I think its _ to make such a young boy work all day.(2)The poor fisherman cant _ his childrens education.(3)I think the government must develop _ to protect environment.(4)Eating too much junk food is _ your health.(5
34、)He can use different _ to work out the problem.,cruel,afford,law,harmful,method,II.单项选择。1.Are you going to _ any of the events?Yes.Maybe long jump and high jump.A.take part inB.joinC.attend D.join in 2.I cant afford _ him an expensive birthday present.A.to buyB.buyingC.for buyingD.buy 3.Remember to
35、 _ the lights when you leave the room.OK.I will.A.turn onB.turn downC.turn upD.turn off,4.The girl always has some money to _ snacks.A.spendB.pay forC.takeD.cost 5.Look!_ boys are playing on the playground.Yes._ them is about 200.A.The number of;A number of B.The number of;The number of C.A number o
36、f;the number of D.A number of;A number of,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 _ _ _.4.到目前为止，我已经交了二十个朋友。_ _,I have made twenty friends.5.实际上，她从没去过那儿。_ _,she has never been there.,In fact,take action,heard of,to help out,So far,Homework,Review the new words and expressions.Practice the conversation in 2d.,Thank You!,
