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Unit 4 The Wonders of Nature 第3课时 语法课教学设计
教材分析
【What】本课时语篇主题为自然奇观，内容聚焦于用形容词和副词的比较级、最高级来描述和比较世界上的自然地理特征，如撒哈拉沙漠、马里亚纳海沟、珠穆朗玛峰、长江、维多利亚瀑布等。通过数字、对话和短文，引导学生学习如何用英语表达自然景观的规模、深度、高度等，并进行比较。 【Why】语篇旨在引导学生认识到大自然的壮丽与神奇，激发对自然的敬畏与探索欲；培养学生用英语准确描述和比较事物的能力，增强跨文化交流的自信；渗透地理知识，拓宽学生的国际视野，了解世界著名自然景观。 【How】本课时语篇以“语法聚焦+分层练习”为框架，以“问答对话+数字练习+短文填空”的形式呈现，从基础的单句比较到篇章运用，层层递进；核心是形容词和副词的比较级、最高级（如 biggest, deepest, taller, farthest, louder 等），并结合具体数字和地理名词，语言简洁、信息密度高；实现“描述事物特征”和“进行事物比较”的交际功能，为学生在真实语境中谈论自然、地理等话题提供语言支架。
学情分析
K(Know)--已知 W(Wonder)--想知/未知 L(Learn)--能知
学生已掌握形容词和副词的原级用法，对比较级有初步认知；熟悉基础数字表达，能认读和书写常见的基数词；对世界著名自然景观（如珠穆朗玛峰、撒哈拉沙漠）有一定常识性了解。 形容词和副词最高级的规则与不规则变化（如 far → farther/further → farthest/furthest）；在语境中准确区分并使用比较级和最高级；大数字（如 9,000,000、337,000）的英文拼写与朗读规则。 通过观察例句和练习，归纳出比较级和最高级的构成规律；借助图片和语境，理解并运用目标词汇描述自然景观；在小组活动中，用所学语言与同伴比较不同地点，完成交际任务。
核心素养教学目标
通过本课学习，学生能够： 语言能力：能准确认读并运用large, scary, amazing, far, close, loud 等形容词/副词及其比较级、最高级形式；能听懂、读懂并运用比较级、最高级句型（如 What is the highest… , Which is bigger… ）描述和比较自然景观；能正确拼写和朗读 1000 以上的大数字。 2.学习能力：学会通过观察例句，归纳形容词/副词比较级和最高级的变化规则；能利用语境和图片线索，完成短文填空等任务；养成主动查阅词典和语法书的习惯，自主解决语言难点； 3.思维品质：能对自然景观的特征进行观察、比较和归纳，提升逻辑思维能力；在讨论“最……的自然景观”时，形成自己的观点并清晰表达；培养批判性思维，思考人类与自然的关系； 4.文化意识：了解世界著名自然奇观，增强对不同地域自然文化的尊重与包容；认识到保护自然环境的重要性，树立可持续发展的理念。 完成课时目标所需的核心语言如下： 【核心词汇】 meters high, meters long, compare things, cubic meters, a total area, pour down, each second, square kilometer, magical experience, go close to, right before our eyes, as far as, at the top of, rush past, a part of, the most amazing experience 【核心句型】 --What is the biggest desert in the world --It is the Sahara Desert. --How big is it --It is about 9,000,000 square kilometres in size. --Where is the deepest point in the ocean --It is in the Mariana Trench. --How deep is it --It is about 11,000 metres deep. Some deep-sea animals are blind, but they can “see” as well as others. Mount Qomolangma is one of the greatest wonders of the world, and it is still growing taller. The Yangtze River travels the farthest in China and is about 6,300 kilometres long.
教学重难点
教学重点：掌握 形容词和副词比较级、最高级的构成规则及用法；用目标语言（如 the biggest, the deepest, taller）准确描述和比较自然景观；大数字的英文表达与书写。 教学难点：区分形容词和副词在比较级、最高级中的不同用法；在真实语境中灵活运用比较级和最高级进行交际，避免混淆；理解并运用不规则变化的比较级和最高级。
教学过程
教学环节 教师活动 学生活动 设计意图
Lead in 情境导入 1.Greet the students. 2.Play a video to set a situation Billy:Hello, everyone! I’m your old friend Billy. Today I will lead you to collect facts and stories for our magazine’s new book--The most Amazing Natural Wonders on earth. Let’s go! 1.Say hello to the teacher. 2.Get known the objects in this period through the stimulated situation. 以自然奇观纪录片情境快速吸引学生注意力，贴合本单元主题，激发学习兴趣。 明确本课任务：为 “世界自然奇观” 手册收集资料，让学生带着真实任务进入学习为语法学习做好铺垫。
Presentation 学习理解 Billy:Here are some files from the magazine about deserts, sea, mountains and rivers. Please read them carefully and finish the following tasks. 1.Ask the students to read the sentences and circle the adjectives which compare things. Then underline the adverbs which compare actions. 2.Introduce the comparative and superlative degrees of adjectives and adverbs. 3.Through showing the pictures and the explanation and examples, guide Ss to learn the differences between the comparative and superlative degrees of adjectives and adverbs. 4.Explain formation of comparatives and superlatives with examples.Then Provide some exercises for them to have a practice. 5.Explain the usage of comparatives. Then Provide some exercises for them to have a practice. 6.Explain the usage of superlatives. Then provide some exercises for them to have a practice. 1.Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions. Learn the definition of the comparative and superlative degrees of adjectives and adverbs. Observe the pictures and examples and learn the differences between the comparative and superlative degrees of adjectives and adverbs. 4.Under the guidance of the teacher, try to learn the formation of comparatives and superlatives with examples. Do some exercises to have a practice. 5. Under the guidance of the teacher, try to learn the usage of comparatives. Then do some exercises to have a practice. 6.Try to learn the usage of comparatives. Then do some exercises to have a practice. 让学生圈画比较类形容词、划出比较类副词，在语境中感知比较级与最高级的用法，培养观察、发现与归纳能力。 清晰讲解三级定义（原级、比较级、最高级），结合长江、黄河、珠江长度对比图示，直观呈现 “两者比较用比较级，三者及以上用最高级”，降低理解难度。 系统讲解比较级和最高级构成规则（直接加 - er/est、去 e 加、双写、变 y 为 i、多音节加 more/most），搭配典型例句与即时练习，讲练结合、由易到难，夯实规则记忆。 重点突破不规则变化（good/well、bad/badly、far、little、many/much），结合自然景观语境强化记忆，突破本课语法难点。 分层讲解比较级、最高级核心句型结构（…than…；the + 比较级 + of the two；the + 最高级 + in/of；序数词 + 最高级），用地标例句帮助学生理解用法，实现规则 — 例句 — 运用的闭环学习。
Practice 探究应用 Billy:Here are some key statistics about natural wonders. Do you know how to spell them correctly Guide the students to learn how to read and say large numbers in English. 2.Work on 4b Ask the students to write or spell out the numbers. 3.Play a video about Victoria Falls. Billy:My friend shared his experience of visiting Victoria Falls last year. Could you help me complete his visit diary Guide them to complete the passage with the correct forms of the words in the box. One word is used more than once. Learn how to read and say large numbers in English. 2.Write or spell out the numbers. 3.Complete the passage with the correct forms of the words in the box. One word is used more than once. Ss：1.largest 2.closer 3.louder 4.far5. most amazing 专门突破较大数字的英文表达与读法，结合沙漠、海洋、山峰数据进行训练，贴合本课描述自然奇观规模的话题，解决学生读写大数的实际困难。 通过数字书写、朗读、转换练习，强化三位数分段、thousand/million/billion用法，落实 “正确读写 1000 以上大数字” 的课时目标。 以维多利亚瀑布语篇填空为综合任务，引导学生在完整语篇中运用比较级、最高级，实现从单句操练到语篇运用的提升，培养阅读理解与语法运用能力。
Production 迁移创新 Billy:Now it’s your turn to ask questions. Can you design some interesting questions to compare different natural wonders with your partner 1. Work in pairs Ask the students to find their own partners. 2. Explain the task: Write some questions to compare places. Then ask a partner your questions. 3. Teach the students how to ask questions and also provide some useful expressions like “What is the highest/deepest/largest... Which park is bigger, ... or ... Is ...longer/bigger/higher/lower... than .. ” 4.Lead them to share the questions and try to provide help that the students need. 1.Each should find a partner to work with. 2.Get known the rule s of the task:Write some questions to compare places. Then ask a partner your questions. 3.Use the useful expressions provided by the teacher to ask partner questions. 4. Share the questions in class and try to get the answer by all means. 引导学生自主回顾、口头梳理本课重点词汇、语法规则、核心句型与数字读法，变 “教师讲” 为 “学生说”。 帮助学生构建清晰知识框架，强化记忆、查漏补缺，形成系统语法认知。 培养学生总结、反思、自主梳理的学习能力，落实核心素养目标。
Language Points 1. It went on for as far as the eye could see.它一望无际。 go on for 持续，继续 as far as 像......一样远 2.Later, we sat in a special pool at the top of the falls. 后来，我们坐在瀑布顶部的一个特殊的水池里。 at the top of 在......顶部/顶端 3. There, we felt the water rush past us and become a part of the waterfall. rush past 冲过 a part of ......的一部分 4. It was the most amazing but also the scariest experinence. 那是我们那次旅行中最惊人但也最吓人的经历。 but also 而且，还 not only … but also … 不但......而且
Summary 归纳总结 Ask the students to sum up the new words, grammar and sentences . Have a summary of the new words, grammar and sentences with the T’s help. 引导学生自主总结本课时的核心词汇、语法规则和重点句型，帮助学生梳理知识脉络，构建系统的知识体系，强化记忆效果。
分层作业设计
A层： 基础巩固 绘制思维导图总结本堂课的重点词汇和核心语法。
B层： 能力运用 利用形容词的比较级和最高级，比较国内外同类型的自然景观。
C层： 拓展挑战 利用网络资源搜寻我国最具特色的自然景观并在班级分享。
板书设计
Unit4 The wonders of Nature Section A(Grammar--4c)
教学反思
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页）

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