Unit 4 The wonders of nature. Grammar Focus(4a-4d) 导学案2025-2026学年人教版英语八年级下册

该初中英语导学案聚焦形容词/副词比较级、最高级用法及大数字读写，通过课前预习的规则表格填空和数字英文表达练习搭建基础，课堂学习从语法规则观察归纳到数字读写应用，再到语篇填空和口语拓展，形成递进式学习支架。 资料特色在于结合地理事物语境设计练习，如语篇填空描述维多利亚瀑布，口语任务编写比较类问题，提升语言表达与合作交流能力，同时通过自主预习和资料查找任务，培养学生的思维品质和学习能力，习题设计注重知识应用与实际情境结合。

Unit 4 The wonders of nature. Grammar Focus(4a-4d) 导学案 学习目标 1. 掌握形容词/副词比较级、最高级的用法，能正确读写大数字（长度、面积、高度单位）。 1. 能在语境中运用比较级、最高级描述地理事物特征，完成相关练习。 1. 学会用英语编写比较类问题，提升口语表达与合作交流能力。 一、课前预习 1. 形容词/副词比较级&最高级变化规则 规则 原级 比较级 最高级 一般情况 large ______ ______ 以e结尾 late ______ ______ 重读闭音节双写 big ______ ______ 辅音+y变i+er/est easy ______ ______ 多音节词 amazing ______ ______ 不规则变化 far ______ ______ 2. 数字读写预习（写出英文表达） 5,895 → ________________________ 25,768 → ________________________ 4,000 → ________________________ 337,000 → ________________________ 二、课堂学习 任务1：Grammar Focus 观察与归纳（4a） 1. 阅读句子，圈出比较事物的形容词，划出比较动作的副词。 2. 归纳用法： 形容词最高级：the + 形容词最高级 + ______ / ______ ... 表示“……中最……的” 副词最高级：动词 + (the) + ______ 重点结构：one of the + ______ + 复数名词（最……之一） 任务2：数字读写练习（4b） 完成句子，写出数字的表达： 1. Mount Kilimanjaro is ______ (five thousand, eight hundred and ninety-five) metres high. 2. ______ (twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second. 3. The East African Rift Valley is about 4,000 ______ miles long. 4. The Taklimakan Desert has a total area of about 337,000 ______ square kilometres. 任务3：语篇综合填空（4c） 用方框中单词的正确形式填空： large, amazing, far, close, loud My friends and I visited Victoria Falls in Africa last year. Visiting one of the world’s ______ waterfalls was a magical experience. As we went ______ to the falls, the noise of the water slowly grew ______ and louder. Then, right before our eyes, the waterfall appeared. It went on for as ______ as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariest but also the ______ experience of our trip! 任务4：口语拓展练习（4d） 参考示例句型，编写关于地理事物/地点的比较类问题，与同伴问答： 1. What is the highest...? 1. Which park is bigger, ... or ...? 示例： A: What is the highest mountain in the world? B: It’s Mount Qomolangma. A: Which river is longer, the Nile or the Yangtze River? B: The Nile is longer. 三、课堂练习 1. 单项选择 (1) The Sahara Desert is the ______ desert in the world. A. big B. bigger C. biggest (2) The Yangtze River travels the ______ in China. A. far B. farther C. farthest (3) Victoria Falls is one of the ______ waterfalls in the world. A. large B. larger C. largest (4) As we got ______ to the falls, the noise became ______. A. close; loud B. closer; louder C. closest; loudest 2. 句子改写（用最高级） 1. The Sahara Desert is big. It’s bigger than any other desert in the world. → The Sahara Desert is ______ ______ desert in the world. 2. Mount Qomolangma is high. It’s higher than any other mountain in the world. → Mount Qomolangma is ______ ______ mountain in the world. 四、课后作业 1. 抄写本课重点句型与数字表达各2遍。 2. 用3-5个句子描述一个你知道的地理奇观，用上比较级或最高级。 3. 查找一个“世界地理之最”的资料，准备下节课分享。 参考答案 课前预习 1. 形容词/副词变化： large-larger-largest；late-later-latest；big-bigger-biggest；easy-easier-easiest；amazing-more amazing-most amazing；far-farther-farthest 2. 数字读写： five thousand, eight hundred and ninety-five；twenty-five thousand, seven hundred and sixty-eight；four thousand；three hundred and thirty-seven thousand 课堂学习 任务1： 形容词：biggest, deepest, greatest, tallest；副词：farthest, as well as 形容词最高级：in/of；副词最高级：副词最高级；重点结构：形容词最高级 任务2： 1. 5,895 2. 25,768 3. four thousand 4. three hundred and thirty-seven thousand 任务3： largest；closer；louder；far；most amazing 课堂练习 1. 单项选择：(1)C (2)C (3)C (4)B 2. 句子改写： a. the biggest b. the highest 学科网（北京）股份有限公司 $