Unit 13We are trying to save the earth. Language GoalTalk about pollution and envirnmental protectionTo talk about air pollution, water pollution and sound pollution.To think about ways of protecting the environment.To learn the new words: advantage, scientificserious pollutionWe are harming our planet in so many ways.伤害伤害air pollutionsoil pollutionwater pollutionthe earth song by Michael Jackson !Factories pour dangerous gases into the air.Cars also pour dangerous gases into the air.tail gasair 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. Dad, whats the acid rain?Natural resources are disappearing at a dangerous rate.以危险的速度以危险的速度Group One Group TwoGroup Three desert灭绝灭绝extinctHelp 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.STARTYou drink a can of cola. What do you do?I throw away cans.I recycle cans.You throw away the cans. Thats bad for the 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 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 both 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 room;use paper or resusable bags;recycle books and paper; turn off the shower when you wash your hair;dont use napkins;rethink,reuse, recycle . .industryharmfulcostwoodenplasticaffort n. 工业工业adj. 有害的有害的v. 花费花费adj. 木制的木制的adj. 塑料的塑料的v. 支付的起支付的起Words and expressionsmake a differencetake part inturn offpay forcut downlead to 起作用；有影响起作用；有影响参加参加关掉关掉付费；付出代价付费；付出代价减少减少导致导致Words and expressionsvWere trying to save the earth. 我们在努力拯救地球。我们在努力拯救地球。v The rive used to be so clean. 这河流过去是如此的清澈。这河流过去是如此的清澈。v The air is badly polluted. 空气被严重污染。空气被严重污染。v 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。这种方法不仅残酷，而且对环境也有害。基基础预习础预习写出下面写出下面单词单词的意思的意思litter_ bottom_fisherman_ugly_cost_plastic_coal_advantage_wooden_把下面的短把下面的短语语与与汉语汉语意思意思连连起来。起来。make a diffenencecut downlead to be full of play a part in 导致导致起作用起作用减少减少参与参与充满充满 Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.1aloud musiccarsrubbishplaneslitteringshipsfactoriessmokingbulding housesmobile phonesnoise pullotionair pollutionwater pollutioncars, factories, smoking, building houses(burning, power plants, nuclear waste disposal)Loud music, planes, building houses, mobile phones(machines,crowds, vihicles)rubbish, littering, ships, factories(sewage, industrial waste, pesticides)Listen and complete the sentences.1bwhat was the problem?The river was _. even the bottom of the river was full of _. there were no more _ for fishmen to catch.really dirtyrubbishfishwhat 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.litterwastegovernmentclose downclean upMark: The river was dirty. Even the bottom of the river was full of rubbish.Tony: But it used to be so clean!Mark: Yes, but people are littering in the river.Tony: Everyone in this town should play a part in cleaning it up! Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.1c2a Listen to the interview. Circle the kinds of pollution that Jason andSusan talk about. A. land pollution B. air pollution C. noise pollution D. water pollution1. 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 in_ like parks. Th is turns beautiful parks into ugly places.more carmore carpollutepolluteare throwing awayare throwing awaypublic placespublic places2b Listen again and complete the sentences. Jason: The air has become really polluted around here. Im really getting worried.Susan: Yes, I used to be able to see stars in the sky.Jason: The problem is that . Use the information in 2a and 2b to role-play conversations between Jason and Susan.2cInterviewer: 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. Other advantages of bike riding are that its good for health and it doesnt cost anything!2dRole-play the conversation.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 cans and keep public places clean and beautiful for everyone.Interviewer: So together, our actions can make a difference and lead to a better future!辨析：辨析： turn, get与与become(1) become 多指身份，职位等的变化，多指身份，职位等的变化，它强调变化过程已经完成，后面可以接名词它强调变化过程已经完成，后面可以接名词或者形容词。或者形容词。 He becomes a teacher.(2) get多用于口语，表示一种变化过程，多用于口语，表示一种变化过程，强调的是强调的是“渐渐变化渐渐变化”后常接形容词的比较级形式。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。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。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。山里的树叶已经变成了棕色。 ：uHer mother _ angry when she heard the news.uIts _ darker and darker outside.uThe milk has _bad.becamegettingturned cut down, 意为意为减少减少； 是是“动词动词+副词副词”结结构的短语，后面所带的宾语为名词时，宾语构的短语，后面所带的宾语为名词时，宾语可以位于可以位于down的前面或后面；为代词时只能的前面或后面；为代词时只能位于位于down前面。前面。 Youd better cut the article down to about 2000 words. cut 后接后接off, into,up, in 的不同：的不同：cut off切断；切除切断；切除cut into把把.切成切成.cut up切碎切碎cut in 插队插队花费花费主语主语表示内容表示内容spend人人宾语可以是钱，精宾语可以是钱，精力，时间等。力，时间等。cost物或事物或事后接后接life，money，health，time等，等，侧重与花费的代价侧重与花费的代价take事或人事或人说明事情完成花费说明事情完成花费了了.辨析：辨析：spend, cost, take, pay花费花费主语主语表示内容表示内容pay人人支付支付 作为及物动作为及物动词，可以是词，可以是 pay sb 或或pay some money；作为不及物动词，；作为不及物动词，形式为形式为pay for。for表支付的原因。表支付的原因。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用方框中所用方框中所给词给词的适当形式填空。的适当形式填空。1. Dont throw _(垃圾垃圾) everywhere.2. In winter, many people burn _(煤煤) to keep warm.3. The police found a body at the _(底部底部) of the lake.4. The _(花花费费) of living in big cities is very high.5. He keeps a rabbit in a big _(木制的木制的) box.cost wooden, coal , bottom, littercost woodencoalbottomlitter1. He _ go out with his parents, but nowhe _ stay at home alone. A. use to; is used 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. costChoose 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 Blead to Ctake away Dput out5. What are the _ of bike riding? - It can help cut down air pollution. Aadvantage Breasons Cresults Dideas1. 多一个人少一个人无所多一个人少一个人无所谓谓。 One person wouldnt _ _ _. 2. 这这个木箱个木箱时时装装满满了了书书。The _ box _ _ _ books. 3. 不健康的不健康的饮饮食食对这对这种疾病的种疾病的传传播起一定的作用。播起一定的作用。 Unhealthy foods _ _ _ _ the spread of the disease. 4. 这这条小路通向公园。条小路通向公园。 The path _ _ the park. 5. 我我错错拿了你的包。拿了你的包。 I took your bag _ _ mine by mistake. wooden is full ofmake a differencelead to paly a part of instead of Read the passage about sharks and complete the fact sheet below.3aMany have heard of sharks fin soup. Thisfamous and expensive dish is especiallypopular in southern China. 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 environment. 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 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 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!Where shark fin soup is popularNumber of sharks caught and traded every yearhow much the numbers of some kinds of sharks have fallen in the last 20-30 yearsTwo environmental groups against finning70 millionover 90 percentWildAid and the WWFLets 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 _ _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 action to save the sharks! southern cruel cut off swim harmful topLets learn somelanguage pointsharmful 形容词，意为形容词，意为“有害的有害的”。常构成短语。常构成短语be harmful to “对对有害的有害的”。Staying up often is harmful to your health. 经常经常熬夜对你的健康有害。熬夜对你的健康有害。【拓展拓展】harm 名词，意为名词，意为“害处害处”。常用构成短语。常用构成短语do harm to “对对有害有害”，相当于，相当于be harmful to. Too much smoking does harm to his health. = Too much smoking is harmful to his health. 吸烟吸烟过多对他的健康有害。过多对他的健康有害。改为同义句。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：辨析：join, join in 和和take part in tojoin加入组织，团体，党派等，有加入组织，团体，党派等，有作为其中的一个成员的含义作为其中的一个成员的含义;后面也可以加表示人的名词，后面也可以加表示人的名词，表示和某人一起参加某活动表示和某人一起参加某活动join in 加入一种具体活动。加入一种具体活动。take aprt in指参加会议或群众性活动等，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着重说明句子主语参加该项活动并在活动中发挥作用。动并在活动中发挥作用。Will you join us in the discussion? 你参加我你参加我们们的的讨论吗讨论吗？ She joined the Young Pioneers. 她加入了少先她加入了少先队队。 Why didnt you join in the talk last night? 昨晚你昨晚你为为什么没参加座什么没参加座谈谈？Did you take part in the sports meet? 你参加运你参加运动动会了会了吗吗？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. attend B. join C. join inD. take part in afford是是动词动词，意意为为“买买得起得起,担担负负得起得起”，通常通常与与can, could, be able to连连用用,多多用于否定句中。用于否定句中。They couldnt afford $50 for a ticket. 他他们们拿不拿不出出50美元美元买买一一张张票。票。 afford后面常跟后面常跟带带to的的动词动词不定式。不定式。We cant afford to go abroad this summer. 今年今年夏天我夏天我们们没有足没有足够够的的钱钱出国。出国。例句：例句：Miss Taylor never wastes money on anything too expensive, even though she can _to. She has donated much of the money she saved to charities. A. affordB. allow C. remind D. pay1. 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 passage again and fill in the blanks with the words in the box. sowhen3bso althoughif but when 3.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. butAlthoughIf 练习题练习题I. 用方框中用方框中词词的适当形式完成下面的句子。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. I.(5) He can use different _ to work out the problem. method, cruel, harmful, afford, lawcruelaffordlawharmfulmethodII. 单项选择单项选择。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 _ 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 of; the number of D. A number of; A number of III. 根据根据汉语汉语提示完成句子。提示完成句子。1. 我我们们必必须须采取行采取行动动来阻止他来阻止他们们。 We must _ _ to stop them. 2. 我从没听我从没听说过这说过这个人。个人。 I have never _ _ such a man. 3. 我我们乐们乐意尽力帮你意尽力帮你摆摆脱困境。脱困境。 We are glad to do what we can do _ _ _.4. 到目前到目前为为止，我已止，我已经经交了二十个朋友。交了二十个朋友。 _ _, I have made twenty friends. 5. 实际实际上，她从没去上，她从没去过过那儿。那儿。 _ _, she has never been there. In fact take actionheard ofto help outSo farHomework 1. Review the new words and expressions.2.Practice the conversation in 2d.