Unit 8 Welcome to the unit 课件 2025-2026学年译林版八年级英语下册

该初中英语课件围绕“绿色世界”主题，涵盖污染类型及原因、减污措施等核心知识。以World Environment Day为导入，通过听力填空、表格匹配建立污染类型与原因的关联，再经角色扮演和小组讨论构建“认知-实践-应用”的学习支架。 其亮点在于融合语言能力与文化意识培养，如通过对话练习提升听说能力，结合中国森林覆盖率等数据增强家国情怀。采用任务型教学（设计海报、调查）和互评机制，助力学生主动思考污染问题解决方案，教师可借结构化活动高效落实教学目标。

What are your answers to those questions? What kind of result has China reached? What have we Chinese done to achieve this green miracle (奇迹)? Solid progress in green development in 2021-2025 2021-2025年绿色发展取得坚实进展 China has made significant strides in green development during the 14th Five-Year Plan period (2021-2025), with increased forest coverage, improved biodiversity, and closer harmony between humans and nature. 中国在十四个五年计划（2021-2025）期间，在绿色发展方面取得了显著进展，森林覆盖面积扩大，生物多样性改善，人与自然更加和谐。 China completed 549 million mu (about 36.6 million hectares) of land greening in the period, including 185 million mu of afforestation. 中国在此期间完成了5.49亿亩（约3660万公顷）的土地绿化，其中包括1.85亿亩的造林。 With its forest coverage rate rising to 25.09 percent, up nearly two percentage points from 2020, China contributed roughly one-quarter of the world's newly added greenery. China's forest stock volume has reached 20.99 billion cubic meters, hitting the 2030 target ahead of schedule. 中国的森林覆盖率上升至25.09%，比2020年增长近两个百分点，贡献了全球新加入绿化面积的约四分之一。中国森林资源量已达到209.9亿立方米，提前达到2030年目标。 ... Updated: 2025-09-10 Various (各种各样的) events were held across China to mark World Environment Day. Updated: 2025-06-05 主题：美丽中国我先行 All these people are working for the same goal: to build a green world. In this unit, we will read about a green country;           talk and write about how to go green; learn about environmental problems;    become more aware of how to protect the environment. ➷➷ ➷ ➷ ➷ ➷ ➷ ➷ ➷ ➷ Think green, go green, and be green. "Think green" is the idea. "Go green" is the choice and the start. "Be green" is the action and the habit. Together they make a real difference! World Environment Day is coming. Let's discuss some environmental problems and share our ideas on how to go green. http://www.xyybs.com Welcome to the unit In this lesson, you will talk about ways to reduce pollution. identify four types of pollution and their causes; ➷➷ ➷ ➷ ➷ ➷ ➷ ➷ ➷ ➷ Air pollution Soil pollution After Before After Before After Before After Before Click the box to observe the changes. Which types of pollution are they? Noise pollution Water pollution What causes these types of pollution? Chemical waste Vehicle noise Factory smoke Litter A The Class 1, Grade 8 students are learning about pollution. Listen to the introduction to four types of pollution and fill in the blanks. P107 A Four types of pollution 化学废料 不洁净的燃料 被倾倒进 ... causes/leads to/ pollutes/adds to ... pollution. ... is polluted/caused by ... ... one of the main causes of ... pollution. Let's talk What should we do to reduce these types of pollution? 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 B Millie and Daniel are talking about reducing pollution. P107 B Listen and fill in 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 减少空气污染 减少水污染 拼车（通常指汽车类交通工具，比如私家车、顺风车） 环保清洁产品 Read and learn the conversation by heart in 3 minutes. What can we do to _________________? ______________________________ or ____________. Yes. We can also ___________________. __________. We can plant more trees. I agree. And ________________? Some rivers don't look clean and clear! We should ______________________________. Yes. That will reduce water pollution. Millie: Daniel: Millie: Daniel: Millie: Daniel: Millie: We'll see which group does the best. Self-evaluation (自评) Peer-evaluation (同伴评) Use words and phrases properly. Pause correctly. Speak loudly and fluently (流畅地). Be vivid and emotional (情感充沛)! A: What can we do to reduce soil/noise/air/water pollution? B: It's a good idea to ... A: Yes. We can also ... B: Good idea. We can ... A: I agree. And what about soil/noise/air/water pollution? B: We should ... A: Yes. That will reduce soil/noise/air/water pollution. Work in pairs and talk about how we can reduce pollution. Use the conversation below as a model. drop litter into bins reduce chemical waste plant more trees keep voices down in public use quieter machines in building work walk if possible use clean fuels don't throw rubbish into rivers save water (e.g., turn off taps) use fewer single-use bottles What else can we do to reduce air, water, soil and noise pollution? Which type of pollution is the biggest problem in your hometown? Explain. C P107 C In my hometown, air pollution is the biggest problem. First, there are many factories near our city. They burn a lot of coal every day and release dirty smoke into the air. Second, more and more people drive cars to work or go to school. This makes the air even worse. On foggy days, we can't see far away. Some people, especially old people and children, often have sore throats or cough a lot. Luckily, our government is trying to solve the problem. It asks factories to use clean energy and encourages people to take buses or ride bikes. I hope the air in my hometown will be fresher soon. Types Causes Negative effects Solutions Chemicals poured into rivers and lakes chemical (1) We learn chemical knowledge in science class. (2) Some chemicals in the river are bad for fish. 被排入河流和湖泊的化学物质 我们在科学课上学习化学知识。 河里的一些化学制品对鱼有害。 c.n. 化学制品 → n. chemistry 化学（学科） chemist 化学家；药剂师 Chemical waste 化学废料 adj. 化学品的；化学的 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 (1) Please pour some water into the glass. (2) The rain poured down all night. 请往杯子里倒些水。 雨下了一整夜。 pour ... into ... 把……倒入…… 这里是过去分词短语作后置定语，用来修饰前面的名词chemicals。 名词chemicals和动词pour之间是被动关系 —— 化学物质是"被倾倒"的对象，因此用过去分词poured来体现被动。 pour down（雨）倾盆而下 When finishing, exchange your papers to grade each other.(Score one point for each correct answer.) Name Score Now 2 minutes to test your spelling. 1. English-Chinese soil pollution chemical waste share a ride air conditioning 2. Chinese-English 不洁净的燃料 减少空气污染 把……倒入…… 环保清洁产品 As more people care about the environment, we start to do small things to go green. First, my family tries to use less (1)_______________ in summer. We often open windows to let fresh air in. Second, my parents (2)___________ with our neighbors to the office. This can cut down on the use of cars. Third, we don't buy products with too many (3)___________ because they are bad for our health and the (4)______. Some factories used to burn (5)____________ and (6)______ dirty water ______ the fields. Now, the government asks them to use clean energy. We also see many (7)____________ buses on the street, and the old (8)______ with black smoke is hard to find now. If everyone does their part, our earth will become better. 短文填空（用方框内单词或短语的适当形式填空）。 soil, chemical, share a ride, air conditioning, truck, unclean fuels, pour ... into ..., eco-friendly air conditioning share a ride chemicals soil unclean fuels pour into eco-friendly truck 1. Can you identify four types of pollution and their causes? 2. Can you talk about ways to reduce pollution? 3. Can you describe the biggest problem in your hometown and explain why? You must do: 1. Memorize the words and phrases in this lesson. 2. Design an eco-friendly poster with tips to reduce pollution. 3. Preview Reading on pages 108-111. Collect some information about Switzerland, especially some famous environmental practices. You choose to do: Make a survey on the topic 'How Green Are You?' around your school or neighborhood. You can start from the following aspects: 1. What green habits do you have in daily life to reduce pollution? 2. What has your school or community done to protect the environment? 3. ... null 70242.305 null 40202.344 $