Unit 8 A green world Welcome to the unit 课件 2025-2026学年译林版英语八年级下册

该初中英语课件围绕“绿色世界”主题，核心知识点包括土壤、噪音、空气、水污染的类型、成因及减污方法。课堂导入从世界环境日切入，通过自由讨论、图片识别引导学生初步认知污染类型，结合音频填空梳理成因，再经对话角色扮演落实减污措施，构建从认知到应用的学习支架。 其亮点在于融合语言能力与思维品质培养，通过音频听力、对话填空提升听说技能，Further thinking环节引导学生分析土壤和噪音污染解决办法，培养问题解决能力。结合家乡污染讨论增强环保责任感，体现文化意识。采用任务型教学和合作学习，教师可借助结构化活动提升教学效率，学生在实践中提升语言应用能力和环保素养。

Unit8 A green world Welcome to the unit Lead in Think green,be green! In this unit, we will read about a green country; learn about environmental problems; talk and write about how to go green; become more aware of how to protect the environment. World Environment Day is coming. Let's discuss some environmental problems and share our ideas on how to go green. Free talk What kinds of pollution do you know? Air/Water/Noise/Soil/Light/Plastic/Garbage pollution ... Do you know what types of pollution are shown in the pictures? soil pollution noise pollution air pollution water pollution What are the causes of these kinds of pollution? soil pollution noise pollution traffic noise factory machines building work noise loud music and parties factory waste too many farm chemicals rubbish heavy metals water pollution air pollution dirty water from factories dirty water from homes farm chemicals oil leaks (泄露) factory smoke car exhaust (废气) burning coal and oil forest fires The Class 1, Grade 8 students are learning about pollution. Four types of pollution Listen to the introduction to four types of pollution and fill in the blanks. Cutting down cars Smoke from factories Wastewater Today we're going to talk about the four main types of pollution. Soil is polluted by chemical waste and other rubbish from humans. Cutting down too many trees can also lead to soil pollution. Then there is noise pollution. This is usually caused by cars, trucks and buses on the road. Noise from building work also creates noise pollution. Air pollution is another big problem. Most air pollution is caused by the burning of unclean fuels. Smoke from factories pollutes the air as well. Finally, water in rivers, lakes and seas is polluted because of many human activities. For example, people pour chemicals into rivers and lakes. Wastewater also adds to water pollution. Tapescript Millie and Daniel are talking about reducing pollution. Listen to the conversation and complete the table below. Pollution type Ways to reduce it Air pollution 1. Share a (1)_ to school with others or take the (2)_. 2. Ride a bike if living (3)_. 3. Plant more trees. (4)_ pollution Use more (5)_ cleaning products. ride bus close Water eco-friendly Read the conversation aloud in different roles. Millie: What can we do to reduce air pollution? Daniel: It’s a good idea to share a ride to school with others or take the bus. Millie: Yes. We can also ride a bike if we live close. Daniel: Good idea. We can plant more trees. Millie: I agree. And what about water pollution? Some rivers don’t look clean and clear! Daniel: We should use more eco-friendly cleaning products. Millie: Yes. That will reduce water pollution. Work in pairs and talk about how we can reduce pollution. Use the conversation below as a model. A: What can we do to reduce ... pollution? B: It’s a good idea to ... A: Yes. We can also ... B: Good idea. We can ... A: I agree. And what about ... pollution? ... B: We should … A: Yes. That will reduce ... pollution. Further thinking What can we do to reduce soil pollution and noise pollution? sort garbage correctly put old batteries in harmful waste bins plant trees and grass in school never litter when playing outdoors soil pollution noise pollution don’t shout loudly in public places use headphones when listening to music tell friends not to play noisy toys make posters to tell others noise is harmful Which type of pollution is the biggest problem in your hometown? Explain. In my hometown, air pollution is the biggest problem. Many factories give off black smoke. Also, there are too many cars on the roads. Their exhaust makes the air dirty. On foggy days, we can’t see far and my throat feels bad. Language points Language points Chemicals poured into rivers and lakes 被排入河流和湖泊的化学物质 pour vt. & vi. 倾倒,倒出;倾泻 pour ... into ... 把……倒入…… pour down(雨)倾盆而下 Don't pour dirty water into the river. 不要把污水倒进河里。 The rain poured down suddenly. 大雨骤然倾盆而下。 Homework 1.Find more information about pollution. 2.Preview Reading“A green country” Blues 89444.18 null 40202.344 $