Unit 7 写作讲解：An open letter on reducing our carbon footprint 学案 2025-2026学年沪外教版英语七年级上册

沪外教七上Unit 7 写作讲解 An open letter on reducing our carbon footprint 一、写作目标及话题分析 核心话题：撰写一封公开信，呼吁大家减少碳足迹，针对全球变暖问题提出具体减排建议，号召共同行动 核心句型：现在完成时（have/has + done）、should表建议、原因与结果表达 时态：一般现在时（提建议）+现在完成时（描述全球变暖影响） 人称：第一人称（I）+第二人称（you，呼吁对象） 字数要求：80–120词 二、写作思路（呼吁行动三段式） 段落布局 核心功能 模板句式 开篇点题 点明背景+引出核心问题 Dear friends, Global warming has changed our world. We have felt its bad effects. 主体建议 分场景提减排建议（用should），结合现在完成时 We should... We have... to reduce carbon footprint. 收篇呼吁 总结号召+行动倡议 Let’s take action now to protect our Earth! 三、素材积累 词汇储备 类别 核心词汇 碳足迹相关 carbon footprint, global warming, greenhouse gas, reduce, reuse, recycle 减排行动 save energy, take public transport, plant trees, cut down on plastic 建议情态词 should, ought to, must, can 时态变形 have done, has caused, have felt, have reduced 万能句式 句式类型 模板句子 开头句 Dear friends, Global warming has become a serious problem for our planet. We have felt its bad effects in our daily life. 中间句 We should ________ to cut down carbon footprint. We have ________ for years, and it helps a lot. 结尾句 Let’s take action from now on to protect our only Earth! 四、书面表达 （一）填空式模板 Dear friends, Global warming has changed our world. We ________ its bad effects already. To reduce our carbon footprint, we should ________ at home. We should also ________ when we go out. We have ________ for a long time, and it helps cut down greenhouse gases. Let’s take small steps every day. Let’s take action now to protect our warm and beautiful Earth! Yours, （二）范文 Dear friends, Global warming has become a serious problem for our planet. We have felt its bad effects: the ice has melted faster, and the temperature has risen quickly. To reduce our carbon footprint, we should take small steps every day. We should save energy by turning off lights when leaving rooms. We should take public transport instead of driving cars. We have recycled paper and plastic for two years, and it helps cut down greenhouse gases. Let’s take action now! Small steps can make a big difference. Let’s protect our Earth together. Yours, Li Hua （三）范文中文翻译 亲爱的朋友们： 全球变暖已经成为我们星球面临的一个严重问题。我们早已感受到了它的负面影响：冰川融化得更快了，气温也在迅速上升。 为了减少碳足迹，我们应该每天采取一些小行动。我们要随手关灯以节约能源，出门时选择公共交通工具而非开车。我们坚持回收纸张和塑料已经两年了，这有助于减少温室气体排放。 让我们现在就行动起来吧！微小的行动能带来巨大的改变。让我们一起守护我们的地球。 你的， 李华 五、自我检查&同伴互评清单 检查维度 核心问题 语法规范 1. 现在完成时（have/has + done）使用是否正确？ 2. should表建议的用法是否恰当？ 内容表达 1. 是否提出至少3条减排建议？ 2. 是否结合现在完成时描述行动成果？ 格式规范 1. 公开信格式（称呼/署名）是否正确？ 2. 每句首字母大写、标点是否无误？ ( 1 ) 学科网（北京）股份有限公司 $