Unit3语法(比较级)讲解与练习-2026-2027学年人教版英语八年级上册

本讲义聚焦初中英语形容词、副词比较级核心知识点，系统梳理从概念（两者对比“更……”、同级比较“和……一样……”）到规则变化（直接加-er、辅音+y变i+ier、多音节词加more）、不规则变化（good/well→better等），再到核心句型（比较级+than、as…as）、修饰词（much/a little等）及拓展结构的完整知识学习支架。 该资料特色在于结合口诀（如“辅音+y变y为i加er”）和易错点提示（more与-er不可同用）强化记忆，配套多样化练习（填空、选择、句型转换、汉译英）。通过实例分析提升语言能力，规则分类培养思维品质，策略提示发展学习能力，课中辅助教师教学，课后助力学生查漏补缺。

Unit3 Same or Different?语法讲解与练习 形容词、副词比较级详细讲解 （重点:-er /-ier；more +原级；as…as同级比较） 一、核心概念 1.比较级：用于两者对比，表示 “更……”。 2.同级比较 as…as：表示 “和…… 一样……”，描述两者程度相同。 二、规则变化三大类型 类型 1：直接加 -er *一般单词直接+ -er tall → taller；hard → harder The redwood tree is taller than most other trees in the forest. 这棵红杉比森林里大多数树木更高。 *以不发音e结尾，只加-r nice → nicer；late → later Her advice is nicer than we expected. 她的建议比我们预想的更贴心。 *重读闭音节：辅+元+辅，双写末尾辅音再加 -er big → bigger；thin → thinner；hot → hotter；slim → slimmer The cheetah is slimmer than other wild animals in Africa. 猎豹比非洲其他野生动物体型更苗条。 类型 2：辅音字母+y 结尾 → 变 y为i +- ier lazy → lazier；happy → happier；heavy → heavier ✅口诀：辅音+ y，变y为i 再加 er If you stay in bed all day, you will become lazier than before. 如果你整天躺在床上，你会变得比以前更懒惰。 类型 3：多音节词/部分双音节词 → 前面加 more（不能加- er） outgoing → more outgoing；hard-working → more hard-working； interesting → more interesting She is more hard-working than any other student in her group. 她比小组里其他任何一名学生都更加勤奋。 ⚠️重要禁忌： ❌ more taller ❌ more happier more 和 -er 绝对不可以同时使用！ 三、不规则变化（必须熟记） 1.good / well — better — best This book is good, but that one is better. 这本书不错，但是那一本更好。 Tom plays basketball well, and Jack plays better. 汤姆篮球打得好，杰克打得更好。 2.bad / ill — worse — worst The weather is bad today, and it will be worse tomorrow. 今天天气不好,明天会更糟。 He felt ill yesterday, and today he feels worse. 他昨天不舒服，今天感觉更难受了。 3.many / much — more — most I have many books. She has more books. 我有很多书。她有更多书。 There is much water. There is more water in that bottle. 这里有不少水。那个瓶子里的水更多。 4.little — less — least There is little milk. There is less milk in this cup. 牛奶几乎没有了，这个杯子里的牛奶更少。 5.far — farther / further — farthest / furthest We walked farther than before.（farther 侧重距离） 我们走得比之前更远。 We need further information.（further 侧重抽象：进一步） 我们需要更多 / 进一步的信息。 6.old — older / elder — oldest / eldest He is older than me.（older 年龄对比，可搭配 than） 他年龄比我大。 She is my elder sister.（elder 家庭成员长幼，不作表语，不接 than） 四、核心句型 句型 1：比较级 + than（更……） 主语 + be /实义动词+比较级+ than +对比对象 People with confidence are braver than those who are shy. 拥有自信的人比害羞的人更加勇敢。 A person with humour communicates more easily than a serious person. 拥有幽默感的人沟通起来比严肃的人更加轻松。 易错点：比较对象要同类 ❌ My appearance is different than him. ✅ My appearance is different than his. 句型 2：as … as 同级比较（中间只能放原级！） 肯定句：A +动词+ as +原级 + as + B A和B 一样…… This mirror is as useful as the one in the living room. 这面镜子和客厅里那面一样实用。 否定句：A + not as/so +原级+ as + B A 不如 B…… A pauper’s life is not as comfortable as a prince’s. 贫民的生活不如王子的生活舒适。 ❌ as lazier as（错） ✅ as lazy as（对） 五、比较级常见修饰词 可以放在比较级前面加强程度： much, a lot, a little, far much more outgoing 外向得多；a little lazier 稍微懒一点 例句：This similarity between the two friends is far bigger than we imagined. 这两位朋友之间的相似之处远比我们想象的更多。 ❌ very taller（错误！very 不能修饰比较级） 六、拓展常考结构 比较级+ and +比较级 越来越…… taller and taller；more and more popular As he grows up, he becomes more and more outgoing. 随着慢慢长大，他变得越来越外向。 The +比较级，the +比较级 越……，就越…… The more experience you get, the more confident you will feel. 你获得的经验越多，你就会变得越自信。 七、形容词 vs 副词区分 be 动词后面 → 形容词：He is quieter than his partner. 行为动词后面 → 副词：He listens more carefully than others. 【配套专项练习】 一、用所给词适当形式填空 1.Mike is ________ (outgoing) than Tom. 2.Lily is ________ (slim) than before. 3.My brother is ________ (lazy) than me. 4.Today is ________ (hot) than yesterday. 5.This box is ________ (heavy) than that one. 6.Your room is not as ________ (clean) as mine. 7.Tim is a little ________ (quiet) than his brother. 8.The weather gets ________ (warm) and ________ (warm). 9.Her handwriting is ________ (good) than yours. 10.This film is ________ (bad) than that one. 11.There is ________ (little) water in this bottle than that one. 12.Who is ________ (hard-working), Amy or Lucy? 13.He speaks English ________ (clear) than me. 14.My mother is as ________ (busy) as my father. 15.The new library is much ________ (big) than the old one. 16.She is ________ (serious) than most students. 17.Don’t be ________ (shy) than before. 18.This road is ________ (wide) than that road. 19.Playing outside is ________ (enjoyable) than staying indoors. 20.This story is ________ (interesting) than that story. 21.She sings ________ (well) than her classmates. 22.I think English is ________ (easy) than maths. 23.A cheetah runs ________ (fast) than many other animals. 24.________ (much) exercise, ________ (healthy) you will become. 25.Lucy is as ________ (slim) as Lily. 二、单项选择 ( )1. Tom is ______ than Jack, but Jack studies ______. A. outgoing; hard B. more outgoing; harder C. outgoing; harder D. more outgoing; hard ( )2. This pear is ______ than that one. A. sweet B. sweeter C. sweetest D. the sweetest ( )3. —Who runs ______, Lisa or Mary? —Mary. A. fast B. faster C. fastest D. the fastest ( )4. My sister is not as ______ as me. A. tall B. taller C. tallest D. the tallest ( )5. He is much ______ after doing sports every day. A. strong B. stronger C. strongest D. more strong ( )6. —Is your brother as ______ as you? —No. He is ______. A. old; young B. older; younger C. old; younger D. older; young ( )7. ______ carefully you check, ______ mistakes you will make. A. More; fewer B. The more; the fewer C. More; less D. The more; the less ( )8. The little girl becomes ______. A. tall and tall B. taller and taller C. more tall D. more taller ( )9. I think hiking is ______ than swimming. A. interesting B. more interesting C. most interesting D. the most interesting ( )10. She sings ______, but her sister sings ______. A. well; better B. good; better C. well; good D. better; well ( )11. There is ______ juice in this glass than in that one. A. few B. fewer C. little D. less ( )12. This job is ______ difficult than I expected. A. much B. much more C. more much D. very ( )13. —Who is ______, Mike or Tony? —Mike. He seldom talks. A. quiet B. quieter C. quietest D. the quietest ( )14. You look ______ than before. Do you exercise often? A. slim B. slimmer C. slimmest D. more slim ( )15. Her eyes are bigger than ______. A. me B. I C. mine D. my 三、句型转换 1.Jim is tall. Tim is taller.（合并为一句） _______________________________________________________ 2.This book is interesting. That book is more interesting.（合并） _______________________________________________________ 3.Lucy is hard-working. Lily is as hard-working as Lucy.（同义句） _______________________________________________________ 4.Tom runs fast. Jack runs faster than Tom.（同义句） Tom doesn’t run ______ ______ ______ Jack. 5.The room is smaller than that one.（同义句） That room is ______ ______ this one. 6.My sister is 1.58m. I am 1.62m.（合并一句） _______________________________________________________ 7.This film is not as exciting as that one.（同义句） That film is ______ ______ this one. 8.He is outgoing. His brother is more outgoing.（合并） _______________________________________________________ 9.Kate is quieter than any other girl in her class.（同义改写） _______________________________________________________ 10.The more you practise, the better you will be.（中文翻译） _______________________________________________________ 四、汉译英 1.我的性格比妹妹外向。 _______________________________________________________ 2.猎豹跑得比许多动物更快。 _______________________________________________________ 3.他不如同桌勤奋。 _______________________________________________________ 4.春天天气变得越来越暖和。 _______________________________________________________ 5.你越细心，犯的错误就越少。 _______________________________________________________ 6.这件外套比那件便宜得多。 _______________________________________________________ 7.莉莉和露西一样苗条。 _______________________________________________________ 8.今天比昨天稍微热一点。 _______________________________________________________ 9.谁更害羞，汤姆还是杰克？ _______________________________________________________ 10.他的爱好比我的多。 _______________________________________________________ Keys 一、词形填空 1.more outgoing 2.slimmer 3.lazier 4.hotter 5.heavier 6.clean 7.quieter 8.warmer; warmer 9.better 10.worse 11.less 12.more hard-working 13.more clearly 14.busy 15.bigger 16.more serious 17.shyer 18.wider 19.more enjoyable 20.more interesting 21.better 22.easier 23.faster 24.The more; the healthier 25.slim 二、单项选择 1.B 2.B 3.B 4.A 5.B 6.C 7.B 8.B 9.B 10.A 11.D 12.B 13.B 14.B 15.C 三、句型转换 1.Tim is taller than Jim. 2.That book is more interesting than this book. 3.Lily is as hard-working as Lucy. 4.as fast as 5.bigger than 6.I am taller than my sister. 7.more exciting than 8.His brother is more outgoing than him. 9.Kate is the quietest girl in her class. 10.练习得越多，你就会变得越好。 四、汉译英参考译文 1.I am more outgoing than my younger sister. 2.A cheetah runs faster than many animals. 3.He is not as hard-working as his deskmate. 4.The weather is getting warmer and warmer in spring. 5.The more careful you are, the fewer mistakes you will make. 6.This coat is much cheaper than that one. 7.Lily is as slim as Lucy. 8.Today is a little hotter than yesterday. 9.Who is shyer, Tom or Jack? 10.He has more hobbies than me. 2 / 2 学科网（北京）股份有限公司 $