2020-2021学年Section A集体备课ppt课件

这是一份2020-2021学年Section A集体备课ppt课件，
ELNGISHLorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa.ACUnit 13 We’re trying to save the earth!R·九年级下册Section A 1a-2dNew words乱扔；垃圾；废弃物v.& n.底部；最下部n.渔民；钓鱼的人n.煤；煤块n.litter bottomfishermancoal丑陋的；难看的adj.ugly优点；有利条件n. advantagewoodenplasticcost塑料的； adj.塑料；塑胶 n.花费；价钱n. 木制的；木头的adj.takeawaybin/'teɪkəweɪ//bɪn/外卖食物 n.垃圾箱 n.Let’s read×Don’t ________!litterThe fish live at the _______ of the sea.bottom___________fisherman_________ chairs and table_______ bagwoodenplastic_________uglyLead-inWatch a video and say what you find.The _______ is polluted.earth_______ pollution_______ pollutionairwater_______ pollutionnoiseDo you know any other kinds of pollution? Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. loud music cars rubbish planeslittering ships factories smokingbuilding houses mobile phones noise pollution air pollution water pollutionloud musicplanesbuilding housesmobile phonesmachinescrowdsvehiclescarsfactoriessmokingbuilding housesburning power plantsrubbishlitteringshipsfactoriessewageLanguage pointsnoise pollution 噪音污染 pollution为不可数名词，意为“污染；污染物”，其动词形式为pollute。例句：这条河中有大量的污染物。 There’s lots of pollution in the river. 例句：如果你在晚上发出吵闹声的话，我的狗会叫。 If you make noises at night, my dog will bark. noise为名词，意为“噪音”，形容词形式为noisy【辨析】noise, sound与voice意为“噪音，喧闹声”，常指不悦耳、不和谐的嘈杂声。泛指自然界的各种声音。一般指人的嗓音，如说话、唱歌、谈笑声等。Don’t make _______ in the class!Light travels much faster than ________.The girl has a sweet _______.用 noise, sound 与 voice 填空。noisesoundvoiceListen and complete the sentences.really dirtyrubbishfishlitterwastegovernmentclose downclean up 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.Tapescripts: Tony: No way! It used to be so clean. In fact, it has always been the nicest river in this town.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.Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a. The river was dirty. Even the bottom of the river was full of rubbish. But it used to be so clean! Everyone in this town should play a part in cleaning it up! Yes, but people are throwing litter into the river. Role-playThe air was dirty. The smoke from factories was black.But it used tobe 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. But it used to be so clean! used to为固定结构，意为“曾经；过去常常”，表示过去存在或经常发生但现在已经停止的行为或习惯，后接动词原形。例句：我们曾在伦敦居住过。 We used to live in London. 否定结构： 主语 + didn’t + use to + 动词原形. 主语 + usedn’t to + 动词原形.一般疑问句： Did + 主语 + use to + 动词原形 + 其他? Used + 主语 + to + 动词原形 + 其他?例句：她过去不常来。 She didn’t use to come. She usedn’t to come.【拓展】 be/get used to (doing) sth. 表示“习惯于（做）某事”。例句：我习惯早起。 I am used to getting up early. Make up sentencesMikeMike used to play the piano.肯定句：否定句：Mike didn’t use/ usedn’t to play the piano.MaryMary used to dance.肯定句：否定句：Mary didn’t use/ usedn’t to dance.2. Everyone in this town should play a part in cleaning it up! play a part in 意为“参与某事；在……方面起作用”，后接名词、代词或动词-ing形式。例句：我想参加学校活动。 I want to play a part in school activities. 构成短语： play an active part in (doing) sth. 积极参与（做）某事 play an important part in (doing) sth. 在（做）某事中发挥重要作用A. land pollution B. air pollutionC. noise pollution D. water pollutionListen 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.carspollutemore3. 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 ones.are throwing awaypublic placesTapescripts: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.①② 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.③④Use 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… There is too much rubbish and waste in our cityYes, people are littering in public places .This is turning beautiful places into ugly ones. Role-play the conversation. 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!代替，而不是优势，优点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. bring的反义词是take外卖食物 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!起作用；有影响导致Read and finish the task.take the bustake the subwayride a bikebring a bag to go shoppingnever use wooden chopsticks or plastic forksthrow rubbish in the binsLanguage points1. We should take the bus or subway instead of driving. instead of 意为“代替，而不是”，后面常跟名词、代词或动词-ing形式。 instead of doing sth. 代替做某事例句：她没有待在家里而是去上学了。 She went to school instead of staying at home. 【辨析】 instead of 与 instead介词短语，其后可跟名词、代词或v-ing形式。Now I can drive to work instead of walking.副词，常位于句末，位于句首时，其后有逗号。He didn’t reply. Instead, he left the room.介词短语副词2. Mmm, I think simple things like bringing a bag to go shopping can help. bring此处作及物动词，意为“带来；取来”，反义词为take，意为“拿走”。bring sth. / sb. to+地点 把某物/某人带到某地【辨析】 bring与take带来；拿来带走；拿走从别处带到说话者所在地从说话者所在地带到别处去 Don’t forget to ________ your homework here tomorrow. We’ll _______ the students to the museum.takebring3. Our actions can make a difference and lead to a better future!make a difference 起作用；有影响make a difference to ... 对……产生影响注意：difference前面可加修饰语，如big, great等，表示受影响的程度。例句：锻炼对她产生了重大影响。 Exercise made a big difference to her. 短语：make no difference 没有影响；无关紧要 make all the difference 关系重大；大不相同课堂小结1. fisherman 复数fishermen2. advantage 反义词disadvantage3. wooden adj. wood n.4. harmful adj. harm n.5. scientific adj. scientist/ science n.6. cause/ solve the problem 引发/解决问题7. make a difference影响；有作用8. instead of代替；而不是9. take action采取行动10. take part in参加11. 这个镇上的每一个人都应该参与清理它! Everyone in this town should play a part in cleaning it up !12. 为了减少空气污染,我们应该乘公共汽车或地铁, 而不要开车。 To cut down air pollution, we should take the bus or subway instead of driving.13. 它对健康有益并且不用花费任何东西！ It’s good for health and it doesn’t cost anything!Exercise一、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 savebefishwoodenfishermen1. He _____ go out with his parents, but now he _____ staying at home alone. A. used to; is used to B. is used to; used to C. used to; used to D. is used to; is used to2. The interesting book _____ me 10 yuan. A. took B. paid C. spend D. cost二、单项选择。3. We must do something useful to ____ pollution. A. cut off B. cut up C. cut down D. cut in4. Smoking can ____ lung cancer. You’d bettter give it up. A. work on B. lead to C. take away D. put outHomework1. Review key words, sentences and language points.Try to make a summary on this period to find out what you have learned and do some little things to protect our earth in daily life.3. Do the exercises.（见“”系列丛书 对应课时作业）ELNGISHLorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa.