Unit4Inventions Section 2导学案2026-2027学年沪教版八年级英语上册

该初中英语Unit4 Inventions Section 2导学案聚焦三组不规则形容词变形（good/bad/far）及(not) as ... as原级比较句型，通过预习案夯实词汇语法基础，课堂探究案以语篇问题链和小组活动深化理解，课后拓展案分层巩固，构建连贯学习支架。 以发明主题为语境，融合语言知识与思维训练，通过对话填空、访谈任务提升语言能力，深度思辨题引导辩证看待发明利弊培养思维品质，分层作业设计满足不同学生需求发展学习能力，当堂检测及时巩固，体现学科特色学习方法与习题亮点。

Unit4 Inventions ⭐Section 2导学案 学习目标 1. 掌握三组不规则形容词变形：good /bad/far；掌握 (not) as ... as 原级比较句型用法 · good: better / best · bad: worse / worst · far: farther / further; farthest / furthest · (not) as + 原级 + as 表示两者程度相同 / 不同 2. 完成千年伟大发明对话填空、配对问答练习，结合发明主题语境熟练运用不规则比较级最高级、原级对比句型 3. 双人完成发明对比访谈对话，使用两种对比句型表达观点、对比不同发明 4. 在科技发明主题语境中准确使用对比句型，辩证看待发明利弊，夯实英语对比表达语法基础 一、预习案（课前自主完成） （一）词汇 & 语法预习・基础过关 模块 A：不规则形容词变形 Adjective Comparative 比较级 Superlative 最高级 good better best bad worse worst far farther / further farthest / furthest · farther：侧重物理距离更远 · further：侧重抽象意义（更进一步、更深层次） 模块 B：句型 (not) as ... as 1. ✅ 结构： · as + 形容词原级 + as → 和…… 一样…… · not as + 形容词原级 + as → 不如…… · 修饰可数名词复数：as many + 复数名词 + as · 修饰不可数名词：as much + 不可数名词 + as ✅ 核心：中间必须用形容词原级，不能用比较级 / 最高级 · 例句 1：Early computers were as big as a room. · 例句 2：A candle does not produce as much light as a light bulb. · 例句 3：People can do as many things in the evenings as they can in the daytime. 2. ✅ 比较级 / 最高级使用场景 · 两者对比：better /worse/farther · 三者及以上对比：best /worst/farthest /furthest 模块 C：伟大发明主题词汇 · movable type 活字印刷术 · printing press 印刷机 · vaccine 疫苗 · telephone 电话 · light bulb 电灯泡 · car 汽车 · radio 收音机 · airplane 飞机 · television 电视 · computer 电脑 模块 D：核心句型抄写 + 中英对照 1. The wheel allowed people to travel farther distances. 译：轮子让人们可以去往更远的地方。 2. Some inventions make the world a worse place to live in. 译：有些发明让世界变得更不宜居住。 3. I think movable type is the best invention in the past 1,000 years. 译：我认为活字印刷术是过去一千年里最好的发明。 4. The computer has been almost as important as the movable type. 译：计算机几乎和活字印刷术同等重要。 （二）预习思考题 1. good /bad/far 的比较级和最高级分别是什么？ 2. (not) as ... as 句型中间必须使用形容词什么形式？ 3. 什么时候用比较级，什么时候用最高级？ 二、课堂探究案（课中小组合作完成） （一）语篇问题链・研读发明对话 & 课文例句 基础浅层任务 1：对话填空答案 (1) best (2) better (3) as important (4) worse 进阶理解问题链（语法用法梳理） 1. 不规则形容词 · good：better（两者对比）/best（三者及以上对比） · bad：worse（两者对比）/worst（三者及以上对比） · far：farther（距离更远）/further（抽象更进一步）；farthest /furthest（最远） · 易错：不能写成 gooder /baddest 等错误形式 2. (not) as ... as 句型 · ✅ 原级对比，强调程度相同 / 差距，不体现差距大小 · as big as a room 和一间房子一样大 · not as much light as a light bulb 灯光不如灯泡亮 · ✅ 区别：比较级 (better /worse/farther) 侧重两者差距；最高级侧重整体群体里的极值 3. 语境主线：千年伟大发明对比（活字印刷、灯泡、电脑等），讨论重要性 · 最高级：the best invention 最佳发明 · 比较级：even better invention 更棒的发明 · 原级句型：as important as 和…… 同等重要 深度思辨讨论题 Which invention do you think is the best? Why? （二）合作探究・小组课堂活动（4 人一组） 活动 1：语法变形练习 完成不规则形容词变形练习，朗读例句巩固句型 活动 2：双人问答练习 使用模板问句进行发明对比问答 (1) Which invention do you think is more important, the printing press or the light bulb? Why? (2) Which invention do you think is the most important? Why? (3) What other inventions do you think are as useful as those on the list? 活动 3：句型改写练习 改写句子，分别使用比较级和 (not) as ... as 句型 （三）分层输出任务 迁移 1：基础口头输出（达标） 基础对比句子 The light bulb is better than the old candle. The computer is one of the best inventions. A candle is not as bright as a light bulb. We can travel farther with modern transport. 迁移 2：双人综合发明对比对话（提升） A: Which is better, the printing press or the light bulb? B: I think the light bulb is better, it changed daily life greatly. A: What is the best invention of all? B: I think movable type is the best ancient invention. A: Is the computer as important as movable type? B: Yes, it is almost as important as movable type. 迁移 3：书面综合对比短文写作 标题：Great inventions 写作框架 1. 第一段：List some great inventions 2. 第二段：Compare 2 inventions (use better /worse, (not) as ... as) 3. 第三段：Choose the best invention and explain why 4. 正确运用不规则变形和原级句型 三、课后拓展案（分层巩固作业） 基础层（全体必做） 1. 背诵三组不规则形容词变形和 (not) as ... as 句型规则； 2. 完成本课对话填空练习； 3. 仿写 5 句对比句型句子。 提升层（中等学生选做） 1. 双人完成发明对比问答对话； 2. 完成不规则形容词变形练习； 3. 80 词左右完成伟大发明对比短文。 培优拓展层（学有余力） 1. 1 分钟口语展示：介绍最喜欢的伟大发明并使用对比句型； 2. 拓展写作：My favourite invention； 3. 制作不规则形容词记忆卡片。 课堂小结（板书核心） 1. Irregular adjectives good → better → best bad → worse → worst far → farther/further → farthest/furthest · comparative：for 2 things · superlative：for 3+ things (usually + the) 2. (not) as + adj. base form + as ✅ equal comparison, use original form only ✅ as many + plural nouns / as much + uncountable nouns 3. Theme: compare the value of different inventions 当堂五分钟检测 一、写出正确形式 1. good → comparative: ______ superlative: ______ 2. bad → comparative: ______ superlative: ______ 3. far → comparative: ______ / ______ superlative: ______ / ______ 二、选词填空 (good /better/best /bad/worse /worst) 1. I think the light bulb is ______ than the old candle. 2. Movable type is the ______ ancient invention. 3. Smoking is the ______ habit for our health. 4. Pollution makes our living environment ______. 5. This invention is as ______ as the printing press. 三、单项选择 1. We use ______ form with as ... as A. comparative B. superlative C. original / base 2. Which is correct? A. as better as B. as good as C. as best as 3. We use superlatives when we compare ______ A. two things B. three or more things C. one thing 四、句子翻译/备注知识点 1. 活字印刷术是千年以来最重要的发明之一；灯泡是一项更优秀的发明，改变了人类夜间生活；计算机几乎和活字印刷术有着同等重要的地位。 2. 不规则形容词变形：good-better-best /bad-worse-worst/far-farther/further-farthest/furthest；两者对比用比较级，三者及以上对比用最高级。 3. (not) as ... as 句型用于原级对比，中间必须使用形容词原级，表示两者程度相同或存在差距。 学科网（北京）股份有限公司 $