2018届九年级英语全册Unit13We’retryingtosavetheearth第1课时教案.docx

Unit 13 Were trying to save the earth! Section A 1a2d一、【教材分析】教学目标知识目标1. 学习并掌握下列单词：litter, bottom, fisherman, coal, public, ugly, advantage, cost, wooden, plastic2. 能正确使用以下常用表达：the bottom of, be full of, used to do sth., play a part in doing sth., clean it up, be badly polluted, too much rubbish and waste, turninto , cut down, take the bus or subway, instead of, remember to do sth., make a difference, lead to3. 能熟练掌握并使用下列重点句式：（1）Even the bottom of the river was full of rubbish.（2）It used to be so clean!（3）People are littering in the river.（4）Everyone in this town should play a part in cleaning it up!（5）This turns beautiful parks into ugly places.（6）The air has become really polluted around here. Im really getting worried.（7）To cut down air pollution, we should take the bus or subway instead of driving.（8）Other advantages of bike riding are that its good for health and it doesnt cost anything!（9）Remember to throw rubbish in the cans and keep public places clean and beautiful for everyone.（10）Our actions can make a difference and lead to a better future!能力目标谈论各种环境污染问题，引起污染的原因以及解决的对策。情感目标了解环境污染的坏处，树立环保意识。教学重点讨论环境污染问题。教学难点用所学的知识谈论环保问题。教学方法情境教学法；任务型教学法二、【教学流程】环节师生活动二次备课I. 复习热身1、检查生词预习。（1）先通过PPT呈现本课的单词，教师领读，学生跟读，并帮助学生正音。（2）做题巩固。根据句意和首字母提示写出所缺的单词。 Even the b_ of the river was full of rubbish. People are l_ in the river. Other a_ of bike riding are that its good for health and it doesnt cost anything! I never take w_ chopsticks or plastic forks when I buy takeaway food. Our actions can make a d_ and lead to a better future!答案：bottomlitteringadvantageswoodendifference2、自由交谈。Talk about different kinds of pollution：Noise pollutionAir pollutionWater pollution .感知体验感知1.PPT展示下列图片，引导学生初步感知种种污染问题。体验1. 分组谈论图片展示的污染问题。感知2. 环境污染问题严重，如何保护地球呢？创设问题情景，引导学生思考环境保护的方法。You drink a can of cola. What do you do?There are a lot of old newspapers at your home. What do you do? You go shopping. What do you do?When you write on a piece of paper, what do you do? 体验2. 分四个小组分别讨论上述问题。S1: I throw away cans.S2: I recycle cans.S3: You throw away the cans. Thats bad for the Earth. You recycle the cans. Thats good for the Earth.强化巩固1. 处理教材1a，1b，1c的内容。(1)Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.答案:Noise pollution：cars, factories, smoking, building houses (burning, power plants, nuclear waste disposal)Air pollution：Loud music, planes, building houses, mobile phones (machines, crowds)Water pollution：rubbish, littering, ships, factories (sewage, industrial waste, pesticides) (2) Listen and fill in the blanks. Then match the restaurants with the statements. The river was _. Even the bottom of the river was full of _. There were no more _ for fishmen to catch. People are throwing _into the river. Factories are putting _ into the river.We should write to the _ and ask them to _ the factories. Everyone should help _to the river.答案： really dirty, rubbish, fish litter, waste government, close down, clean up (3) Role-play the conversation.The river has always been the nicest river in this town.Yes, it used to be so clean.But I was there last weekend and the river was really dirty.What caused the problem?People are throwing litter into the river.What should we do?Factories are also putting waste into the river.Yes, everyone in this town should play a part.2.处理教材 2a，2b，2c的内容。(1) Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.答案: A B(2) Listen again and complete the sentences. The air is badly polluted because there are _on the road these days.Factories that burn coal also _ the air with a lot of black smoke.There is also too much rubbish and waste. People _things away every day.People are also littering in _ like parks. This turns beautiful parks into ugly places. 答案：more car pollute are throwing away public places(3) Use the information in 2a and 2b to role-play conversations between Jason and Susan.A: The air has become really polluted around here. Im getting very worried.B: Yes, I used to be able to see stars in the sky.3. 语言知识点的归纳整理。（1）Were trying to save the earth! 我们正在竭尽全力拯救地球! try to do =try ones best to do 努力去做某事。 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。（2）Everyone in this town should play a part in cleaning it up! play a part in 在方面起作用 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。（3）used to used to的意思是“过去经常”，其中的to是不定式符号，不是介词，所以其后接动词原形(不接动名词)。 He used to live in Paris.他过去一直住在巴黎。 used to与be used to的用法比较used to意为“过去经常”，其中的to是不定式符号，后接动词原形。 He used to live in Paris.他过去一直住在巴黎。be used to意为“习惯于”，其中的to是介词，后接动名词。 He is used to living in the country.他已习惯于住在乡下。（4）should的用法：should后接动词原形。表示“应该，应当” You should help your mother with the housework. 你应该帮你母亲做家务。表示“可能，该(=will probably) ” He should arrive soon他可能很快就到了。 should与ought to的比较 除表示“万一”“竟然”等只能用should外，表示“应该，应当”“可能”等，两者可互换，只是ought to的语气稍重。 You ought to/should work harder than that. 你应当更努力地工作。 should 强调主观看法，而 ought to 强调客观要求。 We ought to go and see my mother in hospital tomorrow, but I dont think we will. 我们按理应当在明天去看看住院的母亲的，但我主认为我们不会去。 .实践应用分小组进行对话练习。The river has always been the nicest river in this town.Yes, it used to be so clean.But I was there last weekend and the river was really dirty.What caused the problem?People are throwing litter into the river.What should we do?Factories are also putting waste into the river.Yes, everyone in this town should play a part.总结反馈1.结合板书和课件，让学生盘点所学词汇和重要句型。词汇：litter, bottom, fisherman, coal, public, ugly, advantage, cost, wooden, plastic，the bottom of, be full of, used to do sth., play a part in doing sth., clean it up, be badly polluted, too much rubbish and waste, turninto , cut down, take the bus or subway, instead of, remember to do sth., make a difference, lead to重要句型：（1）Even the bottom of the river was full of rubbish.（2）It used to be so clean!（3）People are littering in the river.（4）Everyone in this town should play a part in cleaning it up!（5）This turns beautiful parks into ugly places.（6）The air has become really polluted around here. Im really getting worried.（7）To cut down air pollution, we should take the bus or subway instead of driving.（8）Other advantages of bike riding are that its good for health and it doesnt cost anything!（9）Remember to throw rubbish in the cans and keep public places clean and beautiful for everyone.（10）Our actions can make a difference and lead to a better future!2. 当堂练习。单项选择。（1）He_go out with h