Unit 2 Saving the Earth 写作专项学案-2025-2026学年仁爱科普版（2012）九年级英语上册

该初中英语学案以“拯救地球”为主题，聚焦环境污染问题、环保行动及意义的写作能力培养，目标涵盖核心词汇运用、时态句型掌握及逻辑结构构建。学案通过写作目标、题目解析、思路点拨、模板示范、范文及素材积累的递进设计，构建从基础到应用的完整学习路径。 亮点在于“问题-措施-呼吁”的主题探究设计，如提供土壤污染介绍与个人环保行动两个写作模板，结合填空练习引导学生运用现在完成时与一般过去时对比，掌握“Pollution has caused...”等句型，培养语言能力与逻辑思维。素材积累包含核心短语、句型及谚语，既支持学生写作实践，又为教师实施单元复习提供系统指导。

Unit 2 Saving the Earth 写作专项学案 写作目标 结合本单元“拯救地球”主题，写一篇介绍环境污染问题、分享环保行动或阐述环保意义的短文，阐述污染危害、环保措施及人与自然的关系，达成以下目标： 1.能正确使用本单元“环境与环保”相关核心词汇（如pollution、pollute、protect、recycle、reduce、waste、harm、environment、resource、sandstorm、ozone layer、greenhouse effect等）及短语（cut down trees、take measures、deal with、protect...from、play a part in、save energy、reduce pollution、throw away、sort waste等）； 2.能熟练运用现在完成时与一般过去时对比描述环境变化，掌握并列句（and/or/but/while连接），正确使用“Pollution has caused... ” “We should... to... ” “It’s important to... for the environment”等常用句型； 3.能按“环境问题/主题引入→核心细节（危害/措施）→感悟与呼吁”的逻辑完成写作，贴合“珍爱地球，共建绿色家园”的单元主题。 题目解析 1.体裁：环境问题类说明文或环保行动类记叙文，兼具纪实性与号召性； 2.人称：第一人称（分享环保行动、发出呼吁）或第三人称（客观介绍环境问题）为主； 3.核心要求 ￮ 内容：覆盖“1个核心环境主题（某类污染/环保行动）、2-3个关键细节（污染表现/环保措施、危害/意义）、1个行动呼吁或未来展望”3个要点； ￮ 字数：80–100词，描述真实具体、建议可行有力，语言符合九年级学生水平，体现对环境的关注与环保责任意识。 思路点拨 1.开头：明确引入核心环境主题（如空气污染、土壤污染、个人环保行动等），用简洁句式点明主题核心（如“空气污染已成为威胁健康的严重问题” “参与社区环保活动让我体会到行动的意义”），用客观描述或情感化语言引出下文具体内容； 2.中间：若介绍环境问题，按“问题表现→危害影响”展开，描述污染的具体形式（如工厂排污、乱砍滥伐、垃圾堆积）、对生态、人类健康的危害（如沙暴频发、健康受损、气候异常），结合时态对比补充细节；若分享环保行动，聚焦“具体措施→行动意义”，列举个人或集体的环保做法（如垃圾分类、植树造林、节约资源），用具体场景说明行动的积极影响； 3.结尾：发出环保呼吁（如“让我们从身边小事做起，共同守护地球”）或表达未来展望（如“相信通过每个人的努力，环境会逐步改善，地球会更美好”），呼应单元“Saving the Earth”的核心主题，传递主动参与环保的积极态度。 写作模板（逐段拆解） 模板一：介绍某类环境污染（土壤污染） 第一段：问题引入与现状 基础句式：________ (污染类型) has become a serious environmental problem. It is mainly caused by ________ (成因，如overusing chemicals in fields、throwing waste into the land). Many areas are affected by it. 示例：Soil pollution is getting worse in many places. It is mainly caused by farmers overusing chemicals in fields and people throwing all kinds of waste into the land. The once fertile soil is now damaged. 第二段：问题危害与影响 基础句式：This pollution does great harm to the environment and us. First, it ________ (危害1，如destroys the soil quality and makes plants hard to grow). Second, ________ (危害2，如the polluted soil produces unhealthy food that harms our health). Animals also lose their habitats because of the bad soil. 示例：Soil pollution brings terrible results. It destroys the soil’s fertility, so crops can’t grow well. What’s worse, the polluted soil leads to unhealthy vegetables and fruits, which are harmful to our health. Many small animals can’t find safe places to live because of the polluted land. 第三段：解决建议与呼吁 基础句式：To solve this problem, we should ________ (措施1，如stop overusing chemicals、sort waste before throwing it away). The government should also ________ (措施2，如make strict rules to protect the soil). Everyone has a duty to protect the soil. Let’s take action now! 示例：We must take measures to stop soil pollution. Farmers should use more natural fertilizers instead of chemicals. We should sort waste and recycle what we can. The government should make laws to punish those who pollute the soil. Protecting soil is protecting our food and health. Let’s work together for a cleaner earth! 模板二：分享个人环保行动经历 第一段：行动引入与背景 基础句式：Protecting the environment is everyone’s responsibility. Last ________ (时间，如weekend/month), I took part in ________ (环保行动，如a tree-planting activity/community clean-up) with my classmates. It was a meaningful experience that made me realize the importance of environmental protection. 示例：I have always wanted to do something for the environment. Last weekend, I joined a community clean-up activity with my friends. We aimed to pick up litter and promote environmental protection among neighbors. 第二段：行动过程与细节 基础句式：First, we ________ (行动1，如collected plastic bottles and waste paper in the park). Then, we ________ (行动2，如sorted the waste into recyclable and non-recyclable bins). We also ________ (行动3，如put up posters to tell people not to cut down trees or throw litter everywhere). Many passers-by praised us and even joined our activity. 示例：First, we picked up litter in the community park, including plastic bags, bottles and food waste. We sorted them carefully and sent recyclable waste to the recycling station. Then, we put up posters with slogans like “Protect Soil, Protect Our Home” on the community noticeboard. We also told kids not to step on the grass. 第三段：行动感悟与收获 基础句式：This activity taught me that ________ (感悟1，如small actions can make a big difference to the environment). I learned that ________ (收获，如everyone’s effort counts in environmental protection). I will keep doing such activities and encourage more people to join me in saving the earth. 示例：This activity made me understand that environmental protection is not difficult. Every small act, like sorting waste or planting a tree, can help. I felt happy when I saw the clean park and people’s supportive smiles. I will continue to take part in environmental activities and ask my family and friends to join me. Saving the earth needs all of us! 范文 My Efforts to Fight Air Pollution Air pollution used to be a big problem in my city. The sky was often gray, and many people suffered from breathing problems. I decided to do my part to improve the situation. Every day, I go to school by bike instead of taking a car to reduce exhaust emissions. I also ask my parents to use public transportation when going out. Last month, my classmates and I planted ten trees in the community. Trees can absorb harmful gases and produce oxygen, which helps clean the air. We also made leaflets to tell neighbors about the harm of air pollution. These small efforts may seem simple, but they are useful. I believe that if everyone takes action to protect the environment, the air will become fresher, and our earth will be healthier. Let’s join hands to fight pollution and save our home! 范文中文翻译 我为对抗空气污染所做的努力 空气污染曾经是我所在城市的一个大问题。天空常常是灰色的，很多人都遭受呼吸问题的困扰。我决定尽自己的一份力量来改善这种状况。 每天，我骑自行车上学而不是坐车，以减少尾气排放。我还让父母出门时使用公共交通工具。上个月，我和同学们在社区里种了十棵树。树木能吸收有害气体并产生氧气，有助于净化空气。我们还制作了传单，告诉邻居们空气污染的危害。 这些小小的努力可能看起来很简单，但它们很有用。我相信，如果每个人都采取行动保护环境，空气会变得更清新，我们的地球也会更健康。让我们携手对抗污染，拯救我们的家园！ 素材积累 核心短语 cut down trees 砍伐树木 take measures 采取措施 deal with 处理；应对 protect...from 保护……免受 play a part in 参与；在……中起作用 save energy 节约能源 reduce pollution 减少污染 throw away 扔掉 sort waste 垃圾分类 recyclable waste 可回收垃圾 non-recyclable waste 不可回收垃圾 natural fertilizers 天然肥料 exhaust emissions 尾气排放 harmful gases 有害气体 plant trees 植树 clean up 清理 put up posters 张贴海报 environmental protection 环境保护 soil quality 土壤质量 greenhouse effect 温室效应 ozone layer 臭氧层 基础句型（含本单元重点） 基础句型 仿写句子 ________ has caused many serious environmental problems. Cutting down too many trees has caused many serious environmental problems. We should ________ to protect the environment. We should save every drop of water to protect the environment. Pollution not only ________ but also ________. Pollution not only destroys the environment but also harms our health. It’s important for us to ________ for the earth. It’s important for us to recycle waste for the earth. Since we started ________, the environment has become ________. Since we started planting trees, the environment has become greener. 好句集锦 1.The earth is our only home; protecting it is protecting our own future. 2.Environmental protection is not a slogan but a daily action—every small step counts. 3.Stopping pollution and saving resources are the best gifts we can give to the earth. 4.We don’t inherit the earth from our ancestors; we borrow it from our children. 谚语 1.Many hands make light work.（众人拾柴火焰高——强调集体环保的力量） 2.Prevention is better than cure.（预防胜于治疗——适用于污染防治的感悟） 3.Actions speak louder than words.（行动胜于雄辩——呼吁环保行动） 学生写作填空练习版 版本一：介绍某类环境污染 ________ (污染类型，如Water pollution) is a serious environmental problem now. It is mainly caused by ________ (成因，如factory waste water、people throwing litter into rivers). This pollution harms our life a lot. It ________ (危害1，如kills fish and pollutes drinking water) and makes the environment dirty. What’s worse, ________ (危害2，如it causes health problems for people who use the polluted water). We must do something to solve it. To protect the environment, we should ________ (措施1，如stop factories from pouring waste water into rivers) and ________ (措施2，如not throw litter into water). Let’s work together to ________ (目标，如make water clean again). Everyone’s effort is important! 版本二：分享个人环保行动经历 Protecting the environment is everyone’s duty. Last ________ (时间，如Saturday), I did some environmental protection work with ________ (人物，如my family/ classmates). First, we ________ (行动1，如cleaned the river bank) and picked up litter. Then, we ________ (行动2，如planted some young trees) to make the environment greener. We also ________ (行动3，如told people to save water and electricity). Many people praised us and joined us. This experience made me understand that ________ (感悟). I will ________ (未来行动，如keep doing such activities) and ask more people to join me. Let’s protect our earth together and make it more beautiful! 学科网（北京）股份有限公司 $