Unit3语法专项课件- 形容词比较级&最高级课件-2025-2026学年沪教版英语八年级上册

教学课件 沪教（牛津）英语八年级上册 Unit 3语法专项—— 形容词比较级&最高级 全解精讲+分层练习 1 学习目标 1.掌握原级、比较级、最高级的基本功能。 2.熟练掌握4类规则变化的拼写细节。 3.背熟5组不规则变化。 4.会用than / the / in / of / among。 5.掌握比较级 ↔ 最高级互换。 基本定义 原级：只描述，不比较。 比较级：两者之间比，表示更…… 最高级：三者及以上比，表示最…… 标志词：than（比较级）；the + 范围（最高级） 规则变化1 — 一般单音节 一般情况：直接 + -er / -est 例: tall → taller → tallest, long → longer → longest 结尾不发音e：只 + -r / -st nice → nicer → nicest 规则变化2 — 重读闭音节 结构：辅音 + 元音 + 辅音 变化：双写尾字母 + -er / -est big → bigger → biggest thin → thinner → thinnest fat → fatter → fattest 规则变化3 — 辅音 + y 结尾：辅音字母 + y 变化：y → i + -er / -est easy → easier → easiest happy → happier → happiest heavy → heavier → heaviest 规则变化4 — 多音节词 音节≥3 或部分双音节词 比较级：more + 形容词 最高级：most + 形容词 beautiful → more beautiful → most beautiful expensive → more expensive → most expensive 不规则变化（必背） good/well → better → best bad/ill → worse → worst many/much → more → most little → less → least far → farther/further → farthest/furthest 比较级核心句型 结构：A + be + 比较级 + than + B 含义：A 比 B 更…… 例句：This phone is lighter than that one. 要点：看到than，一定用比较级 比较级修饰词（加强语气） 可放在比较级前： much / a lot / even / still 例句：He is much taller than me. 例句：This computer is even faster. 比较级并列结构 比较级 + and + 比较级 含义：越来越…… 单音节：taller and taller 多音节：more and more beautiful 最高级核心句型 结构：A + be + the + 最高级 + 范围 范围：in / of / among 例句：He is the tallest in the class. 要点：最高级前通常加 the 最高级不加 the 的情况 当前面有物主代词时，不加 the my best friend（√） my the best friend（×） his fastest car（√） in / of / among 用法 in + 地点/集体：in our class / in the world of + 数量/全部：of the three / of all among + 三者以上：among the students 比较级 ↔ 最高级 互换（必考） 最高级 = 比较级 + than any other + 单数名词 例句：He is the tallest in the class. = He is taller than any other student. 口诀：最高级变比较级，加than any other 易混点1 两者比较 → 比较级 + than 三者及以上 → the + 最高级 有than → 一定不用最高级 有范围 → 优先最高级 易混点2 单音节：用 -er / -est，不用 more taller（√）more tall（×） 多音节：用 more / most，不用 er more important（√）importanter（×） 易混点3 any other + 单数名词 any other student（√） any other students（×） the other + 复数名词 the other students（√） 基础训练1 — 写出三级变化 high → ______________ → ______________ fine → ______________ → ______________ wet → ______________ → ______________ early → ______________ → ______________ careful → ______________ → ______________ higher highest finer finest wetter wettest earlier earliest more careful most careful 基础训练2 — 不规则填空 good → ________________ → ________________ bad → ________________ → ________________ many → ________________ → ________________ little → ________________ → ________________ far → ________________ → ________________ better best worse worst more most less least farther farthest 适当形式填空1 This story is ________________ (funny) than that one. Winter is ________________ (cold) season of the year. She is ________________ (happy) than before. This is ________________ (exciting) movie I’ve seen. He runs ________________ (fast) than his brother. funnier the coldest happier the most exciting faster 适当形式填空2 This is ____________ (bad) restaurant in town. It’s getting ____________ and ____________ (warm). Which is ____________ (safe), plane or train? This bag is ____________ (heavy) than mine. He is ____________ (good) at math than me. the worst warmer warmer safer heavier better 单项选择 1. My room is ______ than yours. A. clean B. cleaner C. the cleanest 2. She is ______ girl in our class. A. quiet B. quieter C. the quietest 3. Which is ______, the elephant or the horse? A. strong B. stronger C. strongest 4.This is ______ book in the store. A. cheap B. cheaper C. the cheapest B C B C 单项选择 1.The movie is ______ than I thought. A. interesting B. more interesting C. most interesting 2. He is ______ than his sister. A. busy B. busier C. the busiest 3. Among all the apps, this one is ______. A. useful B. more useful C. the most useful 4. This dress is ______ of the three. A. beautiful B. more beautiful C. the most beautiful B B C C 句型转换 1. This bike is new. That bike is newer.（合并） That bike is ______ ______ this one. 2. He is the strongest boy.（同义句） He is ___________ than ______ ______ boy. 3. This is the most useful tool.（同义句） This tool is ________ ______ than ______ ______ tool. 4. The river is long. That river is longer.（合并） That river is ______ ______ this one. any other more useful any other longer than newer than stronger 完成句子1 1. 英语比语文更有趣。 English is _________ _________ than Chinese. 2. 黄河是中国第二长河。 The Yellow River is _________ _________ _________ river in China. 3. 这是我吃过最好吃的蛋糕。 This is _________ _________ ___________cake I have ever eaten. 4. 他比班上任何其他学生都高。 He is taller than _________ _________ student in his class. more interesting the second longest the most delicious any other 课堂总结（一） 比较级：两者对比，用 than 变化：-er/-est；more/most；不规则 修饰：much / even / still 结构：比较级 + and + 比较级 课堂总结（二） 最高级：三者以上，用 the 范围：in / of / among 互换：最高级 = 比较级 + than any other 口诀：两者用比，三者用最 教学课件 Unit 3语法专项—— 形容词比较级&最高级 Thank you for listening! 26 $