Unit 4 Amazing Plants and Animals Section A Grammar Focus 教学设计 2026-2027学年英语人教版八年级上册

该教案聚焦形容词和副词最高级的构成与运用，涵盖规则变化（-est/-st/双写/y变i/most+）及不规则变化（good→best等）。通过Quick Quiz提问自然之最（如蓝鲸、猎豹）导入，引出“the+最高级”句型，搭建从感知到归纳的学习支架，衔接后续观察归纳环节。 此资料特色在于融合核心素养，语言能力上通过小组合作归纳规则、语篇（银杏树阅读）运用；文化意识上借助自然话题（红杉、象鸟）增进认知。采用归纳探究与任务型教学，如3a分组讨论、3b句子填空，提升学生语法运用能力，帮助教师高效落实重难点。

Unit 4 Amazing Plants and Animals Section A Grammar Focus 教案 —— 语法课：形容词和副词最高级的构成与运用（人教版八年级上册 2026-2027学年） 课题 Unit 4 Amazing Plants and Animals Section A Grammar Focus (3a~3c) 学科 英语 年级 八年级 教材版本 人教版（2024） 课时 第 1 课时 课型 语法课 教学方法 归纳探究法、情境教学法、任务型教学法 教学用具 多媒体课件、黑板、粉笔 教学目标 ①语言能力：能识别并理解形容词和副词最高级的基本形式，明确其表达“三者及以上中最……”的语法意义，通过观察例词归纳出最高级的构成规则；能在语境练习中根据构成规则正确使用最高级描述事物。②学习能力：采用观察归纳、小组合作探究的方式梳理最高级规则，掌握语法“发现规律—专项练习—语篇运用”的学习方法。③思维品质：通过对比规则变化与不规则变化培养归纳对比的逻辑思维，借助自然话题多角度分析事物特征。④文化意识：借助描述“最……”的内容（如蓝鲸、猎豹、红杉、银杏等），增进对自然的认知，培养热爱生活、关注动植物的情怀。 教学重难点 重点：掌握形容词和副词最高级的规则变化（-est/-st/双写+y变i+est/most+）和不规则变化（good→best, bad→worst, much→most, little→least, far→farthest/furthest）；能在3a、3b、3c各类练习中正确运用最高级形式完成填空、改错和语篇补全。难点：能在复杂语境下准确判断最高级的变化方式，规避双写规则和y变i规则的判断失误；能在连贯语篇（如银杏树阅读）中自然融合最高级结构表达观点；准确区分“one of the+最高级+复数名词”等固定结构。 一、教学过程 Step 1 Warm-up（Quick Quiz 导入）（3~5 min） 【教师活动】T: Good morning, class! Today we'll learn Grammar Focus — the superlative form of adjectives and adverbs. First, let's do a Quick Quiz. Question 1: What's the largest animal in the world? 【学生活动】Ss: (学生思考并回答：The blue whale is the largest animal in the world. It's also the heaviest animal on earth.) 【教师活动】T: Good! Question 2: Which animal runs the fastest? And Question 3: What is the oldest plant in the world? 【学生活动】Ss: (学生回答：The cheetah runs the fastest. The moss is the oldest plant.) 【教师活动】T: Question 4: Which kind of tree is the tallest in the world? Question 5: Which mountain is the highest in the world? 【学生活动】Ss: (学生回答：The redwood tree is the tallest. Qomolangma / Mount Everest is the highest mountain in the world.) 【知识点】Quick Quiz核心句型：The blue whale is the largest animal in the world. / The cheetah runs the fastest. / The moss is the oldest plant. / The redwood tree is the tallest. / Qomolangma is the highest mountain. — 所有句中均含有“the + 形容词/副词最高级”结构，表示“三者及以上中最……”。 【过渡语】通过Quick Quiz我们初步感知了最高级的用法。接下来观察3a中的句子，找出最高级的形式特征。 Step 2 3a 观察归纳 Read and Notice（3~5 min） 【教师活动】T: Now Activity 3a. Read the sentences and notice the words in bold. These bold words are all in the superlative form. Can you find the patterns? Discuss in groups and summarize the rules of how to form superlatives. 【学生活动】Ss: (学生分组讨论，观察加粗的最高级词汇，尝试归纳变化规则：一般加-est、以e结尾加-st、重读闭音节双写尾字母加-est、辅音+y结尾变y为i加-est、多音节词前加most) 【知识点】最高级规则变化五条规则：①一般情况，词尾加-est（如tall→tallest, fast→fastest）；②以不发音的e结尾，词尾加-st（如large→largest, late→latest）；③重读闭音节结尾，双写尾字母加-est（如hot→hottest, big→biggest）；④以“辅音+y”结尾，变y为i加-est（如happy→happiest, heavy→heaviest）；⑤多音节词和部分双音节词，词前加most（如beautiful→most beautiful, comfortable→most comfortable）。 Step 3 不规则变化 Irregular Superlatives（3~5 min） 【教师活动】T: Besides the regular rules, some words have irregular superlative forms. Let's learn them together. good/well → best, bad/badly → worst, much/many → most, little → least, far → farthest / furthest. 【学生活动】Ss: (学生跟读并记忆五个不规则变化的最高级：good/well→best, bad/badly→worst, much/many→most, little→least, far→farthest/furthest) 【知识点】最高级不规则变化五个词汇：good/well→best（最好的/最地）；bad/badly→worst（最差的/最坏地）；much/many→most（最多的）；little→least（最少的）；far→farthest/furthest（最远的）。注意far有两个最高级形式，farthest侧重距离最远，furthest侧重程度最深。 【过渡语】规则和不规则变化都已学习。接下来通过练习巩固最高级的构成。 Step 4 Exercises 写出最高级形式（3~5 min） 【教师活动】T: Now let's practice. Write the superlative forms of the following words: late, strange, hot, comfortable, lazy, cute, shy, honest, happy, good. Think about which rule each word follows. 【学生活动】Ss: (学生独立完成练习：late→latest, strange→strangest, hot→hottest, comfortable→most comfortable, lazy→laziest, cute→cutest, shy→shyest, honest→most honest, happy→happiest, good→best) 【提示】易错点辨析：①hot→hottest（重读闭音节双写t，不能漏写）；②lazy→laziest（辅音+y变y为i，不是lazyst）；③honest→most honest（虽以t结尾但h不发音，属于多音节词用most）；④shy→shyest（以元音+y结尾，不变y为i，直接加est）；⑤comfortable→most comfortable（多音节词用most，不加-est）。 【过渡语】构成规则练习完成。接下来在句子语境中运用最高级。 Step 5 3b 句子填空 Complete the Sentences（5~7 min） 【教师活动】T: Activity 3b. Complete the sentences with the superlative forms of the words in brackets. Number 1: Among all animals, I love pandas the best. I think they are _____ (cute) animals in the world. Number 2: Which do you think is _____ (beautiful), the rose, the peony, or the lotus flower? 【学生活动】Ss: (学生完成填空：1. the cutest; 2. the most beautiful) 【教师活动】T: Continue. Look at the butterfly! It has _____ (colourful) wings. Which animal jumps _____ (high), the lion, the monkey, or the tree frog? Note the new words: wings means 翅膀, tree frog means 树蛙. 【学生活动】Ss: (学生完成填空：the most colourful; the highest。学习新词汇wings翅膀、tree frog树蛙) 【教师活动】T: Let's read more about these animals. Among them, the tree frog usually jumps the highest. Tree frogs have special hind legs—they're long and strong, made for jumping. Lions are big hunters. Their bodies are better for running. Monkeys are better at climbing trees and swinging around in them. 【学生活动】Ss: (学生阅读树蛙、狮子和猴子的对比文段，理解动物身体结构与运动能力的对应关系) 【教师活动】T: Next one. The elephant birds were _____ (large) and _____ (heavy) birds ever on earth. Some could stand up to three metres tall and weigh up to 860 kg. Note: weigh means 有……重，kg means 千克. 【学生活动】Ss: (学生完成填空：the largest; the heaviest。学习新词汇weigh有……重、kg千克，了解象鸟是地球上曾经存在过的最大最重的鸟类) 【知识点】3b核心考点：①the + 最高级 + 名词复数（the cutest animals）；②the + most + 多音节形容词（the most beautiful, the most colourful）；③副词最高级可省略the（jumps the highest / jumps highest均可）；④one of the + 最高级 + 复数名词（one of the largest birds）；⑤新词汇：wings翅膀、tree frog树蛙、weigh有……重/称重、kg千克。 【过渡语】3b句子填空完成。接下来进行词汇拓展练习和语篇阅读。 Step 6 词汇拓展 Vocabulary Practice（3~5 min） 【教师活动】T: What are the superlative forms of the words in the box? The words are: ancient, beautiful, common, good, popular. Think about whether each word follows a regular or irregular rule. 【学生活动】Ss: (学生写出最高级形式：ancient→most ancient, beautiful→most beautiful, common→most common / commonest, good→best, popular→most popular) 【提示】common的最高级有两种形式：most common（较正式）和commonest（较口语化），两种都正确。good属于不规则变化，最高级为best。多音节词ancient、beautiful、popular均用most+形式。 Step 7 语篇阅读 Ginkgo Tree Reading（5~7 min） 【教师活动】T: Now let's read a passage about the ginkgo tree. Fill in the blanks with the superlative forms. The ginkgo tree is one of _____ living trees on earth. Ginkgo trees first appeared over 200 million years ago. Chinese people love the ginkgo, as it is a symbol of hope and long life. 【学生活动】Ss: (学生阅读银杏树文段并填空：the most ancient, the most beautiful, the commonest, the best, the most popular) 【教师活动】T: Let's check the answers. The ginkgo tree is one of the most ancient living trees on earth. The old ginkgo tree in the Zhongnan Mountains is the most beautiful. It is the best time to see it in mid-October. The ginkgo tree is one of the commonest trees in streets and parks. One of the most popular activities is to take a walk under ginkgo trees. 【学生活动】Ss: (学生核对答案，理解银杏树作为希望和长寿象征的文化内涵，学习“one of the + 最高级 + 复数名词”结构在语篇中的运用) 【知识点】语篇中的最高级运用：①one of the most ancient living trees（one of the + 最高级 + 复数名词，表示“最……之一”）；②the most beautiful（多音节词用most）；③the commonest（双音节词可用-est或most）；④the best time（不规则变化good→best）；⑤the most popular activities（多音节词用most+复数名词）。文化拓展：银杏树是中国的古老树种，象征希望和长寿，终南山古银杏树已有1400余年历史。 【过渡语】语篇阅读完成。接下来进行Think and Share口语讨论。 Step 8 Think and Share 口语讨论（3~5 min） 【教师活动】T: Think and Share. Discuss these questions with your partner: Which kind of animal do you think is the cutest? Which kind of flower do you think is the most beautiful? What fruit do you think is the sweetest? Which subject do you think is the most interesting? Which season do you think is the most comfortable? Which sport do you think is the most exciting? 【学生活动】Ss: (学生两人一组用最高级句型讨论：I think pandas are the cutest animals. / I think roses are the most beautiful flowers. / I think summer is the most comfortable season. 等) 【提示】口语讨论句型框架：Which ... do you think is the + 最高级? 回答：I think ... is/are the + 最高级. 注意：do you think插入疑问句中时，主语后需用陈述语序。 【过渡语】口语讨论完成。接下来进行课堂检测练习。 Step 9 课堂检测 Practice Exercises（5~7 min） 【教师活动】T: Now let's do some exercises. Part 1: Fill in the blanks with the superlative forms of the words in brackets. 1. Tom is _____ (tall) student in his class. 2. Mount Everest is _____ (high) mountain in the world. 3. She is _____ (kind) person I know. 4. December is _____ (cold) month of the year here. 5. Math is _____ (difficult) subject for me. 6. Spring is _____ (good) season of the year, I think. 【学生活动】Ss: (学生独立完成填空：1. the tallest; 2. the highest; 3. the kindest; 4. the coldest; 5. the most difficult; 6. the best) 【教师活动】T: Part 2: Find the errors and correct them. 1. I think this is the interestingest movie. 2. The Great Wall is one of most famous places in China. 3. That was the baddest day of my life! 【学生活动】Ss: (学生找出错误并改正：1. interestingest → most interesting（多音节词不能用-est）；2. one of most famous → one of the most famous（one of the+最高级结构不能漏the）；3. baddest → worst（bad的不规则变化是worst，不是baddest）) 【知识点】课堂检测易错点总结：①多音节形容词最高级用most+，不能加-est（interesting→most interesting，不是interestingest）；②one of the + 最高级 + 复数名词结构中the不可省略；③bad的最高级是worst（不规则变化），不是baddest；④tall→tallest（一般规则）、hot→hottest（双写规则）需准确区分。 【过渡语】课堂检测完成。最后进行总结并布置作业。 Step 10 Summary & Homework（2~3 min） 【教师活动】T: Let's summarize. Today we learned the superlative form of adjectives and adverbs. Regular rules: -est, -st, double consonant + -est, y→i + -est, most +. Irregular forms: good→best, bad→worst, much→most, little→least, far→farthest/furthest. We also practiced using superlatives in sentences and passages about nature. 【学生活动】Ss: (学生回顾最高级的五条规则变化和五条不规则变化，整理课堂笔记) 【教师活动】T: Homework: Choose 10 adjectives/adverbs from Units 1-4 word lists, write their superlative forms, and check if they are correct. Also, write an 80-word passage about “the best of your hometown” (such as the most beautiful scenery, the most delicious food, etc.) to share next class. 【知识点】本课总结：①最高级规则变化五条（-est/-st/双写/y变i/most+）；②不规则变化五个（good→best, bad→worst, much→most, little→least, far→farthest/furthest）；③核心句型：the + 最高级 + 名词（单数/复数）；④one of the + 最高级 + 复数名词（最……之一）；⑤do you think插入疑问句的语序；⑥文化拓展：蓝鲸、猎豹、红杉、银杏树等自然之最。 【过渡语】本节课我们系统学习了形容词和副词最高级的构成规则与运用方法，通过自然话题感知了最高级在真实语境中的表达功能。Please review and recite the rules. See you next class! 二、板书设计（三栏式） 规则变化 不规则变化 核心句型与结构 ① 一般加 -est: tall→tallest ② 以e结尾加 -st: large→largest ③ 重读闭音节双写+est: hot→hottest, big→biggest ④ 辅音+y变i加 -est: happy→happiest, heavy→heaviest ⑤ 多音节词加 most: beautiful→most beautiful comfortable→most comfortable good / well → best bad / badly → worst much / many → most little → least far → farthest / furthest 注意： farthest 侧重距离最远 furthest 侧重程度最深 common→commonest / most common (两种形式均可) the + 最高级 + 名词: the largest animal the cutest animals one of the + 最高级 + 复数名词: one of the most ancient trees one of the most popular activities do you think 插入疑问句: Which ... do you think is the + 最高级? 3b 答案： 1. the cutest 2. the most beautiful 3. the most colourful 4. the highest 5. the largest 6. the heaviest 词汇拓展答案： ancient→most ancient beautiful→most beautiful common→most common/commonest good→best popular→most popular 课堂检测答案： Part 1: 1. the tallest 2. the highest 3. the kindest 4. the coldest 5. the most difficult 6. the best Part 2 改错： 1. interestingest→most interesting 2. one of most→one of the most 3. baddest→worst 易错点提醒： ① hot→hottest (双写不能漏) ② lazy→laziest (y变i不是直接加) ③ shy→shyest (元音+y不变i) ④ honest→most honest (h不发音, 按多音节处理) ⑤ one of the + 最高级中 the 不能省略 ⑥ 多音节词不能用-est Unit 4 Amazing Plants and Animals Section A Grammar Focus (3a~3c) 语法课 — 形容词和副词最高级 学科网（北京）股份有限公司 $