九年级全册Section A多媒体教学ppt课件

这是一份九年级全册Section A多媒体教学ppt课件
英语（人教版）九年级全册English Unit 13 We’re trying to save the earth!Section A 1a-2d Do you like it?a clean city… 1课堂导入The earth is polluted.But… a polluted cityWhat kinds of pollution do you know?pollution water pollutionair pollutionnoise pollutionland pollutionHere 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 phones2课堂活动noise pollution____________________________________________________________________________________________________________air pollution______________________________________________________________________________________________________water pollution______________________________________________________________________________________________________loud musicplanesbuilding housesmobile phones(machines, crowds)carsfactoriessmokingbuilding houses (burning, power plants)rubbishlitteringshipsfactories(sewage, pesticides)Listen and complete the sentences. really dirty rubbish fish litter waste government close down clean upListen again and answer the questions.He wants to go swimming in the river.Because the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch.It used to be so clean.2. Why doesn’t Mark want to go with Tony?What does Tony want to do later this afternoon?3. How was the river in the past?Listen and read.Tony: Hey, Mark, maybe we could go swimming in the river later this afternoon. Mark: I don’t think I want to go, Tony.Tony: Why not?Mark: I was there last weekend and the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch.Tony: No way! It used to be so clean. In fact, it has always been the nicest river in this town.下午晚些时候……的底部曾经……; 过去经常……Listen and read.Mark: Not anymore. I think people are throwing litter into the river. Factories are also putting waste into the river.Tony: That’s terrible! We should write to the government. They should close down the factories. Mark: Good idea! But I think everyone in this town should help to clean up the river, too. Everyone should play a part, not just the government.参与；扮演角色；起作用关闭点击，播放视频Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.1cMark: 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 throwing litter into the river.Tony: Everyone in this town should play a part in cleaning it up!The air was dirty. The smoke from factories was black.But it used to be so clean! We should write to the government and ask them to close down the factories.Yes, but people are polluting the air. Language points1.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. We’ll try to finish the work in a week. 我们将努力在一周内完成这项工作。2.Here are some words related to different kinds of pollution. be related to 与……有关 e.g. Is the driver related to the accident? 司机和这起事故有关吗？3. 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。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。rubbish指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收。4.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。Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.2a A. land pollution B. air pollution C. noise pollution D. water pollution 2bListen 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.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 parks into ugly ones. more cars pollute are throwing away public placesListen and read.Interviewer: Today we’re talking to Jason and Susan about environmental problems. Jason and Susan, can you tell us about some of the problems you’ve seen?Jason: I think one problem is that the air is badly polluted. I hardly ever see blue skies anymore.Susan: Yes, and I used to see the stars clearly.Interviewer: What do you think has caused this problem?Susan: Well, there are more cars on the road these days.Jason: And factories that burn coal also pollute the air with a lot of black smoke.Interviewer: What other problems do you see?Susan: I guess there’s too much rubbish and waste in the streets.Jason: Yes! Every day people are throwing away things like wooden chopsticks, plastic bowls and plastic bags.Susan: They’re also littering in public places, for example, during picnics in parks. This is turning beautiful places into ugly ones.Interviewer: You’re right. These are serious problems for our environment. Next, let’s talk about the things we can do to help.Use the information in 2a and 2b to role-play conversations between Jason and Susan.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 ...2cWe should walk, ride the bike, take the bus or subway instead of driving. What are your ideas for solving the problem of air pollution ? We should plant more trees.What are your ideas for solving the problem of air pollution ? Use your own chopsticks when you buy takeaway food.takeaway n. 外卖食物What are your ideas for solving the problem of waste pollution ? We should bring a bag when we go shopping.We shouldn’t use plastic bags and throw them everywhere.What are your ideas for solving the problem of waste pollution ? We should throw rubbish in the（right）bins.What are your ideas for solving the problem of waste pollution ? 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!Interviewer: Great ideas! What about waste pollution?Role-play the conversation.2dSusan: 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!Read the conversation in 2d and fill in the chart. Ride a bike, take the bus or subway instead ofdriving.Bring a bag to go shopping. Don’t take wooden chopsticks or plastic forks when you buy takeaway food.Throw rubbish in the bins.1. We should take _______ or _______ instead of driving.2. We should also _______ ______ _____. It’s good for health!3. Bring _______ to go shopping.4. Never take _________________ or __________ when buying takeaway food.5. ______________ in the bins and keep public places clean and beautiful.the bussubwayridea bikea bagwooden chopsticksplastic forksThrow rubbishWhat should we do?5. …, we should take the bus or subway instead of driving.instead& instead of instead为副词，意为“代替；反而”，在句中作状语。 instead of意为“代替；而不是”，后面可接名词、代词、v-ing形式或介词短语等。Language points6. So together, our actions can make a difference and lead to a better future! 1) make a difference (to…)产生重大影响或作用，to是介词。 【拓展】 make no difference to 对……没有影响 make some difference to 对……有一些影响 e.g. It makes no difference whether you go today or tomorrow. The sea air has made some difference to her health.7. lead to 意为“导致”。e.g. Eating too much sugar can lead to health problems.【链接】lead sb. to ... 可意为“带领某人去……”。e.g. His pet dog Lucky led us to his house just now.8. There are other advantages of bike riding. advantage n. 优点；有利条件advantage作名词，其反义词为disadvantage“缺点；不利条件”。take advantage of ... 意为“利用......”。Before making your decision, you should consider the advantages and disadvantages. When possible, take advantage of this time to enjoy the nice weather.2. It’s good for health and it doesn’t cost anything! cost v. 花费cost在此处作动词，过去式和过去分词均为cost。The watch cost me 200 yuan. 【拓展延伸】cost还可作名词，意为“花费；价钱”。Could you tell me the cost of the trip? 【易混辨析】cost, spend, take与pay重点短语write to ...  给……写信the bottom of the river  河底throw litter into the river  往河里扔垃圾clean up ...  把……打扫干净turn ... into ...  把……变成……cut down air pollution  减少空气污染instead of  代替be good for ...  对……有好处takeaway food  外卖食品make a difference  影响；有作用lead to  带来；导致  点击，播放视频3课堂小结1.We have learnt to talk about air pollution, waste pollution and ways to solve the problems.2. We have listened some listening materials. 3. We have learnt some key words and useful expressions Ⅰ. 根据句意及提示，补全句中所缺单词。1. C              can be used to produce electricity.2. The new car c             a lot of money, but it was certainly worth it.3. There is a w                  bed, a table and two chairs in this small room.4. It is a very clean city. You will hardly find l              when you walk along the street.Coalcostwooden/wood litter4课堂训练5. My uncle is a great f                 and he caught four fish this morning.6. Some cups in the shop are nice and expensive and the others are u              and cheap.7. Living in this street has a lot of a                . The only drawback (弊端) is noise.fishermanuglyadvantagesⅡ. 根据句意选择方框中恰当的短语填空。1. What a mess! You should ____________ your room now.2. Every farmer knows that weather ____________ farming.3. As we all know, smoking too much can ____________ cancer and many other illnesses.4. He said he would ____________ us when he left home but we haven’t heard from him so far.5. The manager asked me to ____________ the report, because he didn’t want to speak too long at the meeting.clean upplays a part inlead towrite to, lead to, clean up, cut down, play a part inwrite tocut downⅢ. 完成句子，每空一词。1. 牛奶对孩子们的健康有好处。 Milk _____ ______ ______ children’s health.2. 辛迪，请记得帮我寄信。 Cindy, please _________ _______ ______ me send the letter.3. 刚才乔重重地摔到楼梯下面。 Joe landed heavily ____ _____ ______ ______ the stairs just now.is good forremember tohelpat thebottom of4. 我们没有茶。你愿意喝点咖啡代替茶吗？ We don’t have any tea. Would you like coffee ______ _____ tea?  5. 人们普遍认为，教育会对一个人的生活产生影响。 People generally agree that education can ____ ___ _______ ____ a person’s life.6.每人人都应该在保护野生动物方面发挥作（part）Everyone should___ ___ ___ ____ in protecting wild animals.instead ofmake a difference to play a part in