Unit4 Section A Grammar Focus（4a-4d）教学设计 2025-2026学年人教版八年级英语下册

课题 Unit 4 The Wonders of Nature Grammar Focus (4a-4d) 学段 初中 年级 八 课型 语法课 课时 3 学科 English 单元 主题分析 本单元属于“人与自然”范畴，涉及“世界主要国家的名称、地理位置与自然景观”子主题内容，围绕“自然奇观”这一核心主题展开，引导学生探索人类与自然之间的联系，旨在帮助学生通过学习地理事实、比较著名地点、运用大数字描述自然现象，最终理解并表达人与自然的情感及精神联结，体现了从语言学习到自然意识培养的综合教育目标。 文本解读 What:本课是人教版新版八年级下册第四单元The Wonders of Nature的第三课时语法课，本课主要学习如何描述和比较自然景观的特征。 学生通过阅读句子和短文，接触并理解一系列用于比较的形容词和副词（如 biggest, deepest, farthest, taller, as well as），同时练习读写大数字，掌握与面积、长度、高度等相关的表达。 Why:本课旨在培养学生用英语准确描述和比较地理事物与现象的能力，其意义在于引导学生关注自然世界，理解地理数据的表达方式，并学会运用比较级和最高级来突显事物的特征与差异。学生不仅能巩固语言知识，还能增强对自然奇观的认知，激发探索世界的兴趣和保护自然的意识。 How:本课通过阶梯式任务引导学生掌握比较的表达与数字的运用。 首先，通过圈画和划线活动辨识比较级和最高级词汇；其次，进行数字的读写转换练习，巩固大数字的表达；接着，在语篇填空任务中综合运用形容词、副词及其比较形式完成描述；最后，通过设计并提问比较性问题（如“What is the highest...?”），在真实对话中迁移运用所学语言，实现从理解到输出的完整学习过程。 学情分析 1.已有知识经验 学生已初步学习过形容词、副词的比较级和最高级的基本构成（及部分不规则变化。对自然地理主题有一定背景知识，知晓部分世界著名自然奇观（如长江、撒哈拉沙漠）的名称和基本特点。 2.潜在学习难点 对于“万”以上级别的英文数字的读法、书写转换（英文与数字形式）反应可能较慢，容易出错。 3.教学支持建议 设计快速读数、听数写阿拉伯数字、看数字说英文等互动活动，针对大数字进行专项强化练习。 教学目标 语言 能力 Students will be able to accurately understand, pronounce, and use comparative and superlative forms of adjectives and adverbs (eg, bigger, the biggest, more slowly, the most loudly). 文化意识 Students will recognize and appreciate significant natural wonders of the world and China (eg, the Yellow River, the Taklimakan Desert, Victoria Falls), understanding their cultural or historical importance. 思维品质 Students will develop analytical and comparative thinking skills by identifying, describing, and contrasting the key attributes (size, length, depth) of different geographical features. 学习能力 Students will cultivate the ability to transfer learned language structures (comparatives, interrogatives) to new contexts and topics for extended communication. 教学 重难点 教学重点 Students will be able to correctly read, write, and comprehend large numerical data related to geographical features. 教学难点 Students will construct and use interrogative sentences for making comparisons. 教学过程设计 教学环节 教师活动 学生活动 设计意图 Step 1 Lead-in 1.Teacher plays a series of short, distinct audio clips (eg, roaring waterfall, strong wind in a desert, bubbling deep ocean, flowing river, birds on a mountain).After playing each one, asks: “Where do you think we are? ” 2.Teacher shows a single slide with four pictures corresponding to the sounds and asks: “Which one sounds the most powerful? Which one seems the most mysterious? Why?” 3.Teacher introduces the mission: “Today your mission is to become Comparison Experts — learning how to describe and compare these amazing places using special language and numbers.” 1.Students listen carefully to each sound, guess the natural environment, and explain their reasoning in simple English or key words. 2.Students match the sounds to the pictures and express personal opinions about the wonders. 3.Students respond enthusiastically to the mission statement. 导入以 “神秘声音挑战” 为核心，旨在快速营造悬念感和探索氛围。摒弃常见的图片或视频直接导入，抓住学生注意力，并自然激活他们关于自然场景的已有知识和词汇。猜测地点的任务开放性强，无论学生语言水平如何，都能用单词或短句参与，为全班尤其是基础薄弱的学生创造了安全的开口机会。 Step 2 Presentation Work on 4a 1.Teacher directs students to look at the sentences in 4a and models the first one: "Look at 'the biggest desert'. 'Biggest' compares all deserts in the world. It's a superlative adjective. Circle it." Then asks students to work individually or in pairs to find and circle other comparing adjectives and underline comparing adverbs. 2.Teacher asks some students to share their findings and writes the base form and comparative/ superlative forms in a table on the board. Guides students to notice the "-er/-est" rule and the irregular forms. 3.Teacher leads students to work in small groups to discuss and conclude the definition,structure and usage of the comparative/ superlative.Teacher monitors and gives guidance if needed. 4.Teacher invites several groups to share their result, then teacher gives a summary about the rules and lets students take notes. 1.Students work individually or in pairs to identify and mark comparative/ superlative words in 4a. 2.Students share answers and participate in formulating the grammar rules by observing the board. 3.Students discuss the rules of the comparative/ superlative. 4.Students share their results and take notes. 本阶段旨在引导学生自主发现并归纳核心语言点。任务4a采用同伴合作探究模式，让学生从例句中主动感知比较级和最高级，教师随后进行梳理和强化规则，体现了“发现学习”。 Step 3 Practice Exercises After learning the knowledge points about the comparative/ superlative, teacher shows some exercises through PPT. 单项选择题。 1.The Sahara is ________ desert in the world. A.big B.bigger C.the biggest D.more big 2.The Mariana Trench is much ________ than most other places in the ocean. A.deep B.deeper C.the deepest D.more deeper 3.Mount Qomolangma grows a little ________ every year. A.tall B.taller C.the tallest D.more tall 4.Some animals can see ____ at night than humans can. A.well B.better C.the best D.more well 5.This river is not ______ the Nile, but it is still very long. A.as long as B.longer C.the longest D.long Work on 4b 1.Teacher directs students to the task 4b and writes the first number from 4b in digits (5,895) on the board. Asks: "How do we read this?" Elicits "five thousand, eight hundred and ninety-five." Has students complete 4b individually, then check in pairs. 2.Teacher conducts a fast- paced "Number Showdown." Says a number word ("twenty-five thousand..."), and students race to write the digits on mini-whiteboards or paper. Work on 4c 1.Teacher introduces the passage about Victoria Falls: “Let's read about an explorer's visit. Some describing words are missing. Use the words in the box, but remember! You might need to change their form to fit the sentences.” Allows students a few minutes to complete 4c individually. 2.Teacher asks students to compare answers with a partner and discuss why they chose those forms. Then checks answers with the whole class, focusing on the reason for each choice. 3.Teacher uses the completed passage for a "Vanishing Text" activity. Reads the passage aloud with students. Then erases or covers key adjectives/adverbs. Students try to retell the passage in pairs from memory, focusing on using the correct comparative forms. 1.Students finish the exercises about the comparative/ superlative on PPT. 2.Students complete 4b individually, then compare answers with a partner. 3.Students participate in the "Number Showdown" game, practicing quick number conversion. 4.Students complete the 4c passage individually, applying the correct forms of the words. 5.Students discuss answers in pairs, justifying their choices based on grammar rules. 6.Students participate in the "Vanishing Text" activity, practicing oral production of the target language in a supported context. 教师通过PPT展示相关练习，趁热打铁，对刚刚讲解的比较级和最高级知识点进行学以致用,强化学生的理解和记忆。 任务4b训练学生对于大数字的掌握，这是学生面临的一大难点；“数字对决”游戏以竞争性互动形式，高效巩固数字读写这一难点，增加趣味性。 4c的语篇填空要求学生不仅理解词义，更要根据语法规则进行词形变换，是综合性的笔头应用。“同伴核对与解释”环节鼓励元认知策略，让学生阐明选择理由，深化理解。“消失的文本”活动是一个有趣的半控制性口语练习，在逐渐撤去支持的过程中，帮助学生内化语言并流利输出，降低直接自由表达的焦虑。 Step 4 Production Work on 4d 1.Teacher sets up a task. "Now, it's your turn to be the expert. In your groups, you will get a 'Nature Fact Card' about a wonder in China." Teacher takes one card and models with a student. 2.Teacher instructs groups to: ①learn the facts on the card. ②Walk around, meet students from other groups, and ask and answer at least two comparison questions using the sentence starters from 4d. ③Record one interesting thing they learn from others. 3.Teacher circulates, provides language support, and encourages use of comparatives/superlatives and numbers. 4.Teacher asks several students to share the "interesting thing" they learned from a classmate. 1.Students receive "Nature Fact Cards" in small groups and familiarize themselves with the information. 2.Students observe the teacher's demonstration. 3.Students engage in a "mingle" activity, asking and answering comparison questions.Note down a new fact learned. 4.Students volunteer to perform. 这是本课的输出与迁移创新环节。设计“比较挑战”的移动交际活动，创造了信息差和真实的交际需求，学生必须运用本课所学语言（比较句式、数字、形容词）完成任务。活动融合了中国地理知识和的比较提问要求。走动式交流能活跃课堂气氛，增加每位学生的开口机会。记录他人信息的步骤确保了倾听的有效性，将语言输入与输出结合。 Step 5 Summary Teacher summarizes key language learned (comparing things/actions, big numbers): "Today, we described and compared wonders. Remember, they are not just numbers and facts. They are our planet's treasures. We should protect them by all means." Students listen to the summary and reflect on the message of protection. 总结不仅回顾语言知识，更提升到保护自然的文化意识和情感态度层面，体现育人价值。 Step 6 Homework Level A:Choose two natural wonders from the lesson. Write 4-5 sentences comparing them. Use at least two comparative adjectives and one superlative adjective. Level B:Write a short conversation (6-8 lines) between two tourists. One tourist asks two questions comparing different places. The other tourist answers using facts or estimates. Level C:Create a "Comparison Poster". Present your chosen wonder by comparing it to one from the lesson. Use comparative/ superlative sentences and visuals. 本作业设计遵循分层理念，满足不同学情需求。各层次学生均能在完成作业的过程中，巩固本课“比较与描述自然奇观”的核心语言目标，并获得成就感。 板书设计 Unit 4 The Wonders of Nature Grammar Focus (4a-4d) Key Language: big – bigger – biggest far – farther – farthest deep – deeper – deepest well – better – best tall – taller – tallest loud – louder – loudest Numbers in Geography: 5,895 → five thousand, eight hundred and ninety-five 337,000 → three hundred and thirty-seven thousand 9,000,000 → nine million Sentence Patterns for Comparison Superlative Q&A: -What is the biggest desert in the world? -It is the Sahara Desert. Comparative Q&A: -Which is longer, the Yellow River or the Yangtze River? -The Yangtze River is longer. 教学反思 1、 成功之处: 1.目标导向清晰:本节课从“神秘声音”导入到“数据比较挑战”，情境真实连贯，有效激发了学生的学习兴趣和参与动机。学生能明确感知本课的学习目标是“用英语描述和比较自然奇观”。 2.关注文化意识与思维品质:教学不仅停留在语言形式，更引导学生思考人类与自然的关系，在比较分析不同地理特征的过程中，学生的逻辑性、批判性思维得到锻炼。 二、存在问题: 1.大数字处理略显仓促:虽然设计了“数字对决”游戏，但对于部分英语数字概念体系薄弱的学生而言，“千”以上大数字的听、说、读、写转换仍是难点，课堂练习时间稍显不足。 2.语言准确性的即时反馈不足:对学生在即兴输出中出现的语法错误或词性误用的捕捉和纠正做得不够。 三、改进措施: 1.强化数字教学支架:在后续类似主题的课程中，可提前制作一个“数字速查表”作为学习工具，或在导入环节加入一个简短的“数字热身”，系统复习百、千、百万的英文读法规则。 2.实施分层反馈与纠错策略:明确课堂不同阶段的纠错重点。在语言呈现和机械练习阶段，及时纠正形式错误；在交际产出阶段，则采用“选择性纠错”策略，优先纠正影响核心意思传达的错误，或在下个教学环节开始前，以匿名举例的方式集体回顾几个典型错误。 学科网（北京）股份有限公司 $