Unit 6 Live Green暑假预习通关练2026-2027学年外研版英语九年级上册

**基本信息** 聚焦九年级上册Unit 6环保主题，融合核心词汇、被动语态语法及读写能力训练，适配暑假预习，强化语言运用与环保意识培养，助力学生构建知识体系与跨文化理解。 **题型特征** |题型|题量/分值|知识覆盖|命题特色| |----|-----------|----------|----------| |书面表达|15分|环保生活方式介绍|按“问题-措施-好处-呼吁”逻辑写作，运用被动语态（如“Plastic bags are used widely”），强化语言输出与思维品质| |阅读理解|10分|塑料降解酶科技文|选材科技前沿，考查细节理解与推理能力，培养科学素养与问题解决思维| |语法填空|10分|被动语态综合运用|覆盖一般现在时、过去时及情态动词被动（如“Plastic is produced”），结合环保语境提升语言能力|

Unit 6 Live Green暑假预习通关练2026-2027学年九年级上册新外研版 预习航标 模块 核心目标 预习重点 预习难点 词汇​ 掌握15个核心词汇：plastic, toothbrush, glove, silently, former, tie, bin, average, tiny, nowhere, highlight, setback, biodegradable, recycle, pollution 熟记固定搭配：on average, get tied in, mistake...for..., break down, go plastic-free 熟词生义（如tie作动词“系、捆”，former作“以前的”） 语法​ 复习被动语态（尤其是一般现在时、一般过去时、含情态动词的被动），能在环保语境中准确运用 ① 识别被动语态结构（be + done）；② 主动语态与被动语态的转换；③ 用被动语态客观描述环境问题 在复杂语境中判断何时使用被动语态（强调动作承受者时） 听说​ 能用英语讨论日常环保行为（如减少塑料使用、垃圾分类），表达个人观点 使用We should..., It's important to..., I think we can...等句型 用被动语态描述现象（如Plastic is widely used） 读写​ 能读懂关于塑料污染的说明文；能写80-100词的短文介绍一种环保生活方式或产品 按“问题→原因→解决方案→呼吁”逻辑写作；运用本单元核心词汇和被动语态 用具体数据或事实支撑观点，避免空泛议论 教材全解 考点一：核心词汇精讲（Unit 6 重点） 1. plastic /ˈplæstɪk/ n. 塑料；adj. 塑料的 • 搭配：plastic pollution（塑料污染）；plastic bag（塑料袋）；plastic-free（无塑料的） • 例句：Plastic is widely used in daily life, but it causes serious pollution.（塑料在日常生活中被广泛使用，但它造成了严重的污染。） 2. biodegradable /ˌbaɪəʊdɪˈɡreɪdəbl/ adj. 可生物降解的 • 反义：non-biodegradable（不可生物降解的） • 例句：We should use biodegradable bags instead of plastic ones.（我们应该使用可生物降解的袋子代替塑料袋。） 3. recycle /ˌriːˈsaɪkl/ v. 回收利用 • 搭配：recycle waste（回收废物）；recycling bin（回收箱） • 例句：Glass and paper can be recycled to reduce waste.（玻璃和纸张可以被回收利用以减少废物。） 4. break down 分解；（机器）损坏 • 例句：Plastic takes hundreds of years to break down in nature.（塑料在自然环境中需要数百年才能分解。） 5. on average 平均而言 • 例句：On average, we use 130 plastic bags per person each year.（平均而言，我们每人每年使用130个塑料袋。） 6. mistake...for... 把……误认为…… • 例句：Sea turtles often mistake plastic bags for jellyfish and eat them.（海龟常把塑料袋误认为水母而吞食。） 7. go plastic-free 实行无塑料生活 • 例句：Many supermarkets now encourage customers to go plastic-free.（许多超市现在鼓励顾客实行无塑料生活。） 考点二：语法精讲（被动语态在环保主题中的应用） 本单元核心语法是被动语态，重点学习如何用被动语态客观描述环境问题、环保措施和自然过程。 核心结构： • 一般现在时被动： am/is/are + 过去分词 ◦ Plastic is used in many products.（塑料被用于许多产品中。） ◦ Recycling bins are placed in public areas.（回收箱被放置在公共区域。） • 一般过去时被动： was/were + 过去分词 ◦ The problem was highlighted in the report.（这个问题在报告中被突出强调。） ◦ Many trees were planted on the hill last year.（去年许多树被种在了山上。） • 含情态动词被动： 情态动词 (can/must/should) + be + 过去分词 ◦ Plastic waste must be reduced.（塑料废物必须被减少。） ◦ More efforts should be made to protect the environment.（应该付出更多努力来保护环境。） 单元特色句型（预习重点）： 1. 描述污染现象： ◦ Every year, millions of tons of plastic are produced globally.（全球每年生产数百万吨塑料。） ◦ The ocean is polluted by plastic waste.（海洋正被塑料垃圾污染。） 2. 介绍环保措施： ◦ New laws have been passed to limit plastic use.（新法律已被通过以限制塑料使用。） ◦ Biodegradable materials are being developed to replace plastic.（可生物降解材料正被开发以替代塑料。） 3. 说明自然过程： ◦ Plastic cannot be broken down quickly by nature.（塑料不能被自然快速分解。） ◦ The rubbish will be taken away by the garbage truck tomorrow.（垃圾明天会被垃圾车运走。） ✅ 例题精析 A new kind of biodegradable plastic ______ in the lab now. It may solve the pollution problem. A. is developed B. was developed C. is being developed D. will be developed 答案：C 解析：句末有now（现在），且“可生物降解塑料”与“开发”是被动关系，故用现在进行时的被动语态is being developed（正在被开发），选C。 考点三：写作精讲（环保生活方式/产品介绍） 写作任务：介绍一种环保生活方式或产品 写作框架： 段落 内容要点 被动语态运用示例 开头（引入）​ 点明主题（如“无塑生活”或“可降解吸管”），说明其重要性 Plastic pollution has become​ a serious global problem. 主体（具体措施/特点）​ 介绍具体做法（如自带购物袋）或产品特点（如可降解） Reusable bags are recommended​ by environmentalists. / Biodegradable straws are made​ from plants. 主体（好处）​ 阐述环保效益（减少污染、保护动物等） Less plastic will be produced, and sea animals will be protected. 结尾（呼吁）​ 鼓励参与，展望未来 Small changes should be made​ by everyone to save our planet. 高分句型储备： • 描述现状： It is reported that millions of tons of plastic are thrown away each year.（据报道，每年有数百万吨塑料被丢弃。） • 提出建议： To reduce waste, rubbish should be sorted into different bins.（为了减少浪费，垃圾应该被分类放入不同的垃圾桶。） • 展望未来： If we act now, a cleaner world will be created for future generations.（如果我们现在行动，一个更清洁的世界将被为后代创造。） 原创范文（介绍可重复使用购物袋）： Say No to Plastic Bags: Use Reusable Bags Plastic bags are used widely, but they cause great harm to our environment. They are difficult to break down and often pollute oceans, harming sea life. To solve this problem, reusable shopping bags are highly recommended. Reusable bags are usually made of cloth or other durable materials. They can be used hundreds of times, unlike plastic bags which are thrown away after one use. By using them, the amount of plastic waste can be greatly reduced. In many countries, plastic bags are no longer provided for free in supermarkets. Instead, reusable bags are sold or given as eco-friendly alternatives. Using reusable bags is a simple but powerful step. If this small change is made by everyone, our planet will become much cleaner. Let's start today and say no to plastic bags! 即练固基 一、根据首字母或中文提示填空 1. We should reduce the use of p______ bags to protect the environment. 2. Glass bottles can be r______ and made into new products. 3. On a______, a person throws away about 50kg of waste each year. 4. The plastic bottle was t______ in the river and floated away. 5. Sea birds often m______ plastic pieces for food and eat them. 6. The new material is b______, meaning it can be broken down by bacteria. 7. The government has p______ new rules to limit single-use plastics. 8. Let's all try to g______ p______-f______ this month to help the earth. 9. The problem of air pollution was h______ in the mayor's speech. 10. After the setback, they didn't give up and c______ working hard. 二、用所给动词的适当被动语态形式填空 1. Plastic ______ (use) in almost every part of our daily life. 2. Millions of plastic bottles ______ (throw) away every day in this city. 3. New environmental laws ______ (pass) last year to reduce pollution. 4. Rubbish must ______ (sort) into different categories before being recycled. 5. A lot of trees ______ (plant) in our school last month to make it greener. 6. Biodegradable plastics ______ (develop) by scientists now. 7. The ocean ______ (pollute) by plastic waste if we don't take action. 8. Your old clothes can ______ (recycle) into new products. 9. The problem ______ (highlight) in the newspaper yesterday. 10. More efforts ______ (need) to solve the plastic crisis. 三、单项选择 1. Every year, a large amount of plastic waste ______ into the ocean. A. dumps B. dumped C. is dumped D. are dumped 2. The new recycling program ______ in our city next month. A. will introduce B. will be introduced C. introduces D. introduced 3. These reusable bottles ______ of stainless steel. A. make B. made C. are made D. are making 4. To save energy, lights should ______ when we leave the room. A. turn off B. be turned off C. turned off D. turning off 5. The problem of plastic pollution ______ by many scientists now. A. is studied B. was studied C. is being studied D. will be studied 过关检测 一、语法填空 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Plastic pollution is one of the biggest environmental problems we face today. Every year, millions of tons of plastic 1.______ (produce) and used. Unfortunately, much of it 2.______ (not recycle). Instead, it 3.______ (throw) away and ends up in landfills or the ocean. The harm caused by plastic 4.______ (recognize) by more and more people. Sea animals, such as turtles and whales, 5.______ (harm) by plastic waste. They often mistake it for food and eat it, which can be deadly. To solve this problem, actions 6.______ (take) worldwide. In many countries, plastic bags 7.______ (ban) in supermarkets. New materials that 8.______ (can break) down naturally 9.______ (develop) by scientists. However, more needs to be done. We must remember that the earth 10.______ (not replace). We only have one home, so we must protect it. 二、完形填空 Have you ever heard of the "Plastic Diet"? It's a new lifestyle 1.______ people try to reduce their plastic use. The idea was first 2.______ by environmental groups and has become popular worldwide. The "Plastic Diet" is not a diet for losing weight, but a way to "lose" plastic. People who follow it try to avoid single-use plastics, such as straws, bottles, and bags. These items are used for a few minutes but 3.______ for hundreds of years in nature. Sarah, a student from London, decided to try the "Plastic Diet" last year. "At first, it was difficult," she said. "Plastic is 4.______ in so many products. But I started with small changes. I 5.______ my own water bottle and shopping bag. I also 6.______ buying food wrapped in plastic." After a month, Sarah was surprised by the results. Her plastic waste was reduced by 70%. "It made me realize how much plastic we 7.______ use unnecessarily," she said. "Now, I can't imagine going back to my old habits." The "Plastic Diet" shows that small individual actions can make a big difference. If more people 8.______ this lifestyle, the amount of plastic pollution 9.______ greatly. As Sarah said, "We don't need to wait for governments to act. Change can 10.______ by each of us, starting today." 1. A. where B. which C. who D. when 2. A. start B. started C. starting D. starts 3. A. last B. lasts C. lasted D. lasting 4. A. find B. found C. founded D. finding 5. A. bring B. brings C. brought D. bringing 6. A. stop B. stopped C. stopping D. stops 7. A. normal B. normally C. normaly D. normly 8. A. adopt B. adopts C. adopted D. adopting 9. A. reduces B. will reduce C. will be reduced D. reduced 10. A. make B. makes C. be made D. making 三、阅读理解 The Ingenious Invention: The Plastic-Eating Enzyme In 2016, a team of Japanese scientists made a surprising discovery while studying a waste dump. They found a bacterium (细菌) that could break down plastic. This bacterium produced an enzyme (酶)—a type of protein that speeds up chemical reactions—which they named PETase. PET is a common type of plastic used in bottles and clothing. Normally, PET takes hundreds of years to decompose (分解), but PETase can break it down in just a few days. This discovery was a breakthrough. However, PETase was not perfect. It worked slowly and could only break down certain types of plastic. To improve it, scientists at the University of Portsmouth in the UK used a supercomputer to study the enzyme's structure. They made a small change to its "active site"—the part that attaches to the plastic. The result was a new, improved enzyme called "super-enzyme." The super-enzyme works six times faster than the original PETase. Even more amazingly, it can break down plastic into its basic building blocks, which can then be used to make new plastic. This creates a circular economy, where plastic is recycled indefinitely instead of being thrown away. While this technology is promising, it is not yet ready for widespread use. Scientists are still working to make the enzyme faster, cheaper, and able to break down more types of plastic. However, it offers a ray of hope in the fight against plastic pollution. As one scientist said, "This is just the beginning. With more research, we may be able to engineer enzymes that can solve our plastic problem completely." 1. What was the surprising discovery made by Japanese scientists in 2016? A. A new type of plastic that decomposes quickly. B. A bacterium that can break down plastic. C. A supercomputer that can study enzymes. D. A new method to recycle plastic bottles. 2. What is PETase? A. A type of plastic used in bottles. B. A bacterium found in a waste dump. C. An enzyme that breaks down PET. D. A supercomputer used for research. 3. How is the "super-enzyme" different from the original PETase? A. It is found in nature. B. It works six times faster. C. It can only break down one type of plastic. D. It is cheaper to produce. 4. What is a major advantage of the super-enzyme mentioned in the passage? A. It can break down plastic into reusable building blocks. B. It can decompose all types of plastic instantly. C. It is already being used worldwide. D. It is cheaper than traditional recycling methods. 5. What is the main idea of the passage? A. The history of plastic production and its environmental impact. B. The discovery and development of a plastic-eating enzyme. C. The problems caused by plastic pollution in the ocean. D. The importance of reducing plastic use in daily life. 四、书面表达 假设你是李华，你校英语报正在举办“绿色生活，从我做起”的征文活动。请你根据以下提示，写一篇80-100词的短文，介绍你的一项环保实践（如垃圾分类、节约用水、使用环保袋等）。 提示： 1. 介绍你选择的环保实践是什么。 2. 说明你是如何做的（具体行动）。 3. 谈谈这项实践带来的好处或你的感受。 4. 发出倡议，鼓励更多人参与。 参考词汇： sort rubbish（垃圾分类）, save energy（节约能源）, eco-friendly（环保的）, make a difference（产生影响） 参考答案 即练固基 一、1. plastic 2. recycled 3. average 4. tied 5. mistake 6. biodegradable 7. passed 8. go plastic-free 9. highlighted 10. continued 二、1. is used 2. are thrown 3. were passed 4. be sorted 5. were planted 6. are being developed 7. will be polluted 8. be recycled 9. was highlighted 10. are needed 三、1. C 2. B 3. C 4. B 5. C 过关检测 一、语法填空 1. is produced 2. is not recycled 3. is thrown 4. is recognized 5. are harmed 6. are being taken 7. have been banned 8. can break 9. are being developed 10. cannot be replaced 二、完形填空 1. A 2. B 3. A 4. B 5. C 6. B 7. B 8. A 9. C 10. C 三、阅读理解 1. B 2. C 3. B 4. A 5. B 四、书面表达（参考范文） My Practice of Sorting Rubbish To live a greener life, I have been practicing sorting rubbish at home and school. It's a simple but effective way to help the environment. Every day, I put different types of waste into different bins. Kitchen waste goes into the green bin, recyclables like paper and plastic bottles into the blue bin, and harmful waste like batteries into the red bin. At first, it was a bit confusing, but now it has become a habit. This practice has many benefits. It reduces the amount of waste sent to landfills and makes recycling easier. It also saves resources and energy. I feel proud that I am doing something useful for our planet. I hope more people will join me in sorting rubbish. Small actions like this can make a big difference to our world. 学科网（北京）股份有限公司 $