Unit 2 Saving the Earth 作文学案- 2025-2026学年仁爱科普版（2012）英语九年级上册

该初中英语作文学案以“守护蓝色星球，共筑绿色家园”为主题，聚焦“环境保护”核心，学习目标涵盖运用一般过去时与现在完成时对比、复合句等语法知识，培养分析因果关系的思维品质及环保主题语言表达能力。学案通过写作导引明确方向，范文与译文提供范例，拓展任务（邮件回复、环保活动经历）递进训练，搭配亮点词块与句型积累，构建从输入到输出的完整学习路径。 亮点在于主题探究式设计，如“Let’s Protect Our Earth”写作结合“过去-现在”环境对比（时态语法实践），分析污染因果（思维品质）；拓展任务“环保活动经历分享”引导学生结合生活实际，运用“recycle waste”“live a green life”等词块，提升语言能力与学习策略。学案提供实用短语句型库，为学生自主学习提供支架，也为教师实施单元复习提供系统教学资源，助力深度学习与能力发展。

Unit 2 Saving the Earth 作文学案 【写作导引】 本单元以“Saving the Earth”为话题，属于“人与自然”主题范畴中“环境保护”这一主题群。单元核心聚焦“污染问题、环境现状与环保行动”，常见写作角度包括：① 描述各类污染的危害与现状；② 分享身边的环保案例或个人环保行动；③ 提出环保建议与呼吁。单元语法重点为一般过去时与现在完成时的对比、复合句（并列连词and/but/or/while），思维技能侧重“分析因果关系”，阅读策略聚焦“通过细节推断主旨”。 【单元话题】 “守护蓝色星球，共筑绿色家园”。请结合生活实际，以“Let’s Protect Our Earth”为题，写一篇100词左右的英语短文，呼吁大家共同保护环境。 ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【范文】 Let’s Protect Our Earth Our earth is in danger because of various pollutions. It’s time for us to take action to protect it. In the past, many rivers were clean and the air was fresh. But now, factories pour waste water into rivers, and cars produce lots of harmful gas. Soil pollution makes food unhealthy, and noise pollution hurts our hearing. Luckily, people have realized the problem. We plant more trees, reuse plastic bags and recycle waste paper. Protecting the earth is everyone’s duty. Let’s save energy, reduce waste and live a green life. Together, we can make our earth greener and more beautiful. 【译文】 让我们保护我们的地球 由于各种污染，我们的地球正处于危险之中。是时候采取行动保护它了。 过去，许多河流清澈见底，空气清新宜人。但现在，工厂把废水排入河流，汽车排放大量有害气体。土壤污染让食物变得不健康，噪音污染损害我们的听力。幸运的是，人们已经意识到了这个问题。我们种更多的树，重复使用塑料袋，回收废纸。 保护地球是每个人的责任。让我们节约能源、减少浪费，过绿色生活。携手并肩，我们能让地球变得更绿、更美。 亮点词块 1. various pollutions 各种污染 1. take action 采取行动 1. pour waste water 排放废水 1. harmful gas 有害气体 1. soil pollution 土壤污染 1. reuse plastic bags 重复使用塑料袋 1. recycle waste paper 回收废纸 1. live a green life 过绿色生活 高分句子 1. Our earth is in danger because of various pollutions.（开篇点题，点明地球面临的危机，贴合单元主题） 1. In the past, many rivers were clean and the air was fresh. But now...（对比过去与现在的环境，突出变化，符合单元语法重点） 1. Protecting the earth is everyone’s duty.（总结环保的重要性，发出呼吁，升华主题） 【拓展1】 Dear Peter, I know you care about environmental protection. Could you tell me: 1. what environmental problems your city is facing; 1. what people there are doing to solve these problems; 1. what teenagers can do to protect the environment. I’m looking forward to your reply. Yours, Wang Tao 假定你是Peter，收到王涛的邮件，请根据邮件内容回复一封邮件，词数不少于70。 Dear Wang Tao, ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Yours, Peter 【拓展1范文】 Dear Wang Tao, I’m glad to share ideas about environmental protection with you! My city is facing air pollution from cars and waste pollution from daily life. The sky used to be gray sometimes, and there was litter in parks. Now people are taking action. The government has built more bike lanes to encourage green travel. Many families sort garbage and reuse water to water plants. Volunteers often clean up parks on weekends. As teenagers, we can do a lot. We can walk or ride bikes to school, use cloth bags instead of plastic ones, and plant trees on weekends. Protecting the environment is a long journey. What environmental problems does your city have? Waiting for your next email. Yours, Peter 【拓展1译文】 亲爱的王涛： 很高兴和你分享环保相关的想法！我的城市正面临汽车造成的空气污染和日常生活产生的垃圾污染。以前天空有时灰蒙蒙的，公园里还有垃圾。 现在人们正在采取行动。政府修建了更多自行车道，鼓励绿色出行。很多家庭进行垃圾分类，还重复用水浇花。志愿者们经常在周末清理公园。 作为青少年，我们能做的有很多。我们可以步行或骑自行车上学，用布袋代替塑料袋，周末种树。保护环境是一场漫长的旅程。你们城市有什么环境问题呢？期待你的下一封邮件。 你的， 彼得 【拓展2】 假设你叫李华，你校英文报“Green Life”专栏正在征集短文，邀请同学们分享一次参与环保活动的经历。请根据以下思维导图内容提示，写一篇题目为“My Experience in an Environmental Protection Activity”的短文。 我的环保活动经历 1. 活动背景（时间、地点、活动内容）2. 活动过程与感受 具体细节1. 上周日，社区组织“清洁公园”活动，清理垃圾、种植树苗2. 分组合作，捡拾垃圾、分类回收，种植小树苗，虽累但快乐 收获与感悟1. 体会到环保的艰辛与意义2. 呼吁更多人参与环保，共建美丽家园 要求： 1. 可在思维导图基础上适当拓展； 1. 不得出现真实校名、地名和姓名； 1. 语句连贯，词数100左右，开头已给出，不计入总词数。 My Experience in an Environmental Protection Activity Last Sunday, I joined an environmental protection activity organized by my community. It was a meaningful day that I will never forget. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【拓展2范文】 My Experience in an Environmental Protection Activity Last Sunday, I joined an environmental protection activity organized by my community. It was a meaningful day that I will never forget. We were divided into groups. My group was responsible for cleaning the park and planting young trees. We picked up litter on the grass and sorted it into recyclable and non-recyclable waste. Then we dug holes, put saplings in and filled them with soil. Everyone worked hard, and sweat ran down our faces, but no one complained. This activity made me realize how hard it is to protect the environment. It also taught me that small actions can make a big difference. I hope more people will join us to make our earth a better place to live. 【拓展2译文】 我的环保活动经历 上周日，我参加了社区组织的一场环保活动。那是意义非凡的一天，我永远不会忘记。 我们被分成了小组。我所在的小组负责清理公园和种植小树苗。我们捡拾草地上的垃圾，并将其分为可回收和不可回收两类。然后我们挖坑、放树苗、填土。每个人都很努力，汗水顺着脸颊流下，但没人抱怨。 这次活动让我意识到保护环境有多艰难，也让我明白小行动能带来大改变。我希望更多人加入我们，让地球成为更宜居的家园。 本话题作文的一些实用短语与句型积累 一、核心主题词汇 1. 污染相关（单元重点） · air pollution 空气污染 · water pollution 水污染 · soil pollution 土壤污染 · noise pollution 噪音污染 · light pollution 光污染 · waste water 废水 · harmful gas 有害气体 · litter 垃圾 · sort garbage 垃圾分类 · recyclable waste 可回收垃圾 1. 环保行动（单元核心） · protect the environment 保护环境 · plant trees 种树 · reuse plastic bags 重复使用塑料袋 · recycle waste paper 回收废纸 · save energy 节约能源 · reduce waste 减少浪费 · green travel 绿色出行 · clean up the park 清理公园 · stop cutting down trees 停止砍伐树木 · live a green life 过绿色生活 1. 语法相关 · simple past tense 一般过去时（was/were, poured, produced, dug） · present perfect tense 现在完成时（have realized, have built, have planted） · compound sentence 复合句（and 表并列，but 表转折，or 表选择，while 表对比） 二、实用句型积累 1. 描述环境变化与污染（贴合时态对比） · In the past, the rivers were clean and clear. But now they are polluted by waste water. · Many factories have poured waste into the environment, which causes serious pollution. · Noise pollution has made it hard for people to sleep well at night. 1. 提出环保建议（贴合单元呼吁方向） · We should walk or ride bikes instead of taking cars to reduce air pollution. · Let’s reuse water to water plants and save every drop of water. · It’s necessary to sort garbage so that recyclable materials can be reused. 1. 阐述环保意义与呼吁 · Protecting the earth is not only our duty but also our responsibility to future generations. · Small actions like planting a tree or picking up litter can make the world better. · Let’s work together to stop pollution and build a greener planet. 三、高级句式与衔接 1. 使用定语从句丰富表达（单元拓展） · The park that we cleaned last Sunday has become much cleaner now. · We planted many saplings which will grow into big trees in a few years. 1. 使用并列连词构建复合句（单元语法重点） · I wanted to stay at home, but I decided to join the环保 activity. · Sort garbage into different groups, and you can help reduce pollution. · We can save energy by turning off lights when leaving, or by using energy-saving products. 1. 逻辑衔接词 · 表示对比：in the past, but now, however, while · 表示递进：what’s more, besides, also · 表示因果：because, so, as a result, therefore · 表示总结：in short, all in all, in conclusion 学科网（北京）股份有限公司 $