Unit 4 The Earth 写作专项学案 2025-2026学年沪教版英语七年级上册

Unit 4 The Earth 写作专项学案 写作目标 结合本单元“地球探索与环境保护”主题，写一篇介绍地球常识或呼吁保护地球的短文，分享地球的神奇事实、面临的环境问题及保护措施，达成以下目标： 1.能正确使用本单元“地球与环保”相关核心词汇（如planet、amazing、pollution、protect、environment、desert、forest、ocean、plastic、recycle等）及短语（be covered by、provide...with、take care of、cut down、clean up、play a part in、throw away、turn off等）； 2.能熟练运用“there be”句型描述地球存在的事物与环境问题，用一般现在时陈述地球特征与环保常态，用连词（because、so、however）衔接逻辑，正确使用形容词描述地球特征与环境状况； 3.能按“地球引入→核心信息（常识/问题）→行动呼吁”的逻辑完成写作，贴合“探索地球之美，守护共同家园”的单元主题。 题目解析 1.体裁：说明类记叙文或呼吁类短文，兼具知识性与感染力； 2.人称：第一人称（分享感悟、发出呼吁）或第三人称（客观介绍地球）； 3.核心要求 ￮ 内容：覆盖“1-2个地球核心常识（如地貌、生命）或环境问题（如塑料污染、森林减少）、2-3个具体环保措施、1个核心呼吁或感悟”3个要点； ￮ 字数：80–100词，信息描述准确，措施具体可行，语言符合七年级学生水平，体现对地球保护的责任意识。 思路点拨 1.开头：明确写作方向（介绍地球常识或呼吁环保），用简洁句式点明地球的核心身份（如“人类唯一的家园” “神奇的星球”），表达对地球的基本态度（如“珍惜” “担忧”），引出下文具体内容； 2.中间：若介绍地球常识，聚焦地球的独特特征（如70%被海洋覆盖、拥有多样生命），用“there be”句型补充细节；若呼吁环保，先说明地球面临的具体问题（如塑料污染、森林砍伐），再列举2-3个可行的环保措施（如减少塑料使用、垃圾分类），结合单元核心短语强化表达； 3.结尾：发出环保呼吁（如“一起守护地球”）或分享感悟（如“地球需要人类呵护”），呼应单元“珍视地球资源，共建美好家园”的核心主题，传递环保责任意识。 写作模板（逐段拆解） 模板一：介绍地球常识 第一段：地球引入与核心定位 基础句式：The Earth is our only home. It is an amazing planet that supports all living things. About 70% of the Earth is covered by ________ (事物，如the sea), and the rest is ________ (事物，如land and forests). It is full of wonders and surprises. 示例：The Earth is our only home. It is an amazing planet that supports all living things. About 70% of the Earth is covered by the sea, and the rest is land with forests, mountains and deserts. It has a history of about 4.5 billion years. 第二段：地球常识与生命特征 基础句式：There are many amazing facts about the Earth. The highest mountain on Earth is over 8,800 metres high, and the deepest part of the sea is more than 10,000 metres deep. There are millions of animals and plants living on the Earth, from ________ (动物，如tigers) on land to ________ (动物，如whales) in the sea. The Earth provides us with food, water and air. 示例：There are many amazing facts about the Earth. The highest mountain is over 8,800 metres high, and the deepest sea part is more than 10,000 metres deep. There are millions of animals and plants—bears in forests, butterflies in gardens and fish in rivers. The Earth provides us with everything we need to live. 第三段：感悟与守护意识 基础句式：The Earth is a precious planet. We should learn about it, explore it and take good care of it. Let’s cherish our home and make it more beautiful for future generations! 示例：The Earth is a precious gift for us. It gives us a wonderful place to live and grow. We should learn more about it and protect it well. Let’s love our Earth and keep it green and clean forever! 模板二：呼吁保护地球 第一段：地球现状与问题引入 基础句式：The Earth is our beautiful home, but it is facing many problems now. There is more and more ________ (问题1，如plastic pollution) in the sea, and many ________ (事物，如sea animals) are getting ill because of it. People are cutting down too many trees, so there is less and less forest land. 示例：The Earth is our beautiful home, but it is in trouble now. There is more and more plastic pollution in the sea—many sea animals eat plastic by mistake and die. People are cutting down too many trees, and sandstorms are becoming more common. 第二段：环保措施与具体行动 基础句式：We can do many things to protect the Earth. First, we should ________ (措施1，如use fewer plastic bags) and recycle them. Second, we shouldn’t ________ (行为1，如cut down trees) and we should plant more trees. Third, we can ________ (措施2，如clean up the beaches) with our friends. Every small action counts. 示例：We can do our part to protect the Earth. First, we should use fewer plastic bags and bring our own shopping bags. Second, we shouldn’t throw rubbish into rivers or seas. Third, we can plant small trees with our family on weekends. We can also save water and electricity in daily life. 第三段：呼吁与美好期许 基础句式：The Earth is the only home for us. Let’s work together to protect it. If everyone tries their best, our Earth will become cleaner and more beautiful. We should pass down the love for the Earth to future generations. 示例：The Earth is our only home—we can’t live without it. Let’s join hands to protect it. Small actions like saving water, recycling rubbish and planting trees can make a big difference. I believe our Earth will be greener and healthier if we all try our best! 范文 Protect Our Precious Earth The Earth is an amazing planet and our only home. About 70% of it is covered by the sea, and there are forests, mountains and deserts on land. It provides us with food, water and clean air, and it is home to millions of animals and plants. However, the Earth is facing serious problems. There is too much plastic pollution—we can see plastic bags and bottles everywhere. People cut down many trees, which makes some animals lose their homes. The sea is also polluted, and many sea animals are in danger. We must act now to protect our Earth. We can use reusable bags instead of plastic ones, recycle rubbish and plant more trees. We should also save water and electricity. Let’s work together to take care of our Earth. It’s our duty to make it a better place for everyone! 范文中文翻译 保护我们珍贵的地球 地球是一颗神奇的星球，也是我们唯一的家园。地球约70%被海洋覆盖，陆地上有森林、山脉和沙漠。它为我们提供食物、水和洁净的空气，也是数百万动植物的家园。 然而，地球正面临着严重的问题。塑料污染太多了——我们到处都能看到塑料袋和塑料瓶。人们砍伐了许多树木，导致一些动物失去了家园。海洋也受到了污染，许多海洋动物正处于危险之中。 我们必须立即行动起来保护地球。我们可以用可重复使用的袋子代替塑料袋，回收垃圾，种植更多的树。我们还应该节约用水用电。让我们一起努力呵护地球。让地球成为一个更适合所有人生活的地方，这是我们的责任！ 素材积累 核心短语 be covered by 被……覆盖 provide...with 为……提供 take care of 照顾；呵护 cut down 砍伐 clean up 清理；打扫 play a part in 参与；在……中起作用 throw away 扔掉 turn off 关掉 use fewer plastic bags 少用塑料袋 recycle rubbish 回收垃圾 plant trees 种树 save water and electricity 节约用水用电 sea pollution 海洋污染 forest land 林地 sandstorm 沙尘暴 reusable bags 可重复使用的袋子 daily life 日常生活 基础句型（含本单元重点） 基础句型 仿写句子 The Earth is covered by ________. The Earth is covered by many beautiful forests and rivers. There is ________ (问题) on the Earth. There is air pollution in some big cities. We should ________ to protect the Earth. We should walk to school to protect the Earth. We shouldn’t ________ because ________. We shouldn’t throw rubbish into the sea because it harms sea animals. The Earth provides us with ________. The Earth provides us with fresh water and green plants. 好句集锦 1.The Earth is our common home—protecting it is everyone’s duty. 2.Small actions can make a big difference to the Earth’s future. 3.We should love the Earth as we love our family, for it gives us life and hope. 谚语 1.We do not inherit the Earth from our ancestors; we borrow it from our children.（我们不是从祖先那里继承地球，而是向子孙借用它） 2.Protecting the Earth is protecting ourselves.（保护地球就是保护我们自己） 3.Green mountains and clear waters are priceless treasures.（绿水青山就是金山银山） 学生写作填空练习版 版本一：介绍地球常识 The Earth is our only home. It is an amazing planet with ________ (地球特征，如blue seas and green forests). About 70% of it is covered by ________, and the rest is land with mountains and deserts. There are many amazing facts about the Earth. The highest mountain is over 8,800 metres high, and ________ (其他常识). There are millions of animals and plants, such as ________ (动物) and ________ (植物). The Earth provides us with ________ (事物，如food and water). I think the Earth is very precious. We should ________ (行动，如learn about it and protect it). Let’s cherish our home and make it more beautiful! 版本二：呼吁保护地球 The Earth is our beautiful home, but it is facing many problems. There is more and more ________ (问题，如plastic pollution) and ________ (问题，如air pollution). Many animals and plants are in danger because of these problems. We can do many things to help. First, we should ________ (措施1，如use reusable bags). Second, we shouldn’t ________ (有害行为，如cut down trees). Third, we can ________ (措施2，如clean up parks) with our friends. Every small action helps. The Earth is our only home. Let’s ________ (呼吁行动，如work together to protect it). I believe our Earth will be ________ (美好状态，如cleaner and greener) if we all try our best! 学科网（北京）股份有限公司 $