Unit3语法(形容词比较最高级)讲解与练习一-2026-2027学年沪教版英语八年级上册

该初中英语导学案聚焦形容词比较级和最高级语法点，通过联系学生已有形容词原级知识，结合数字生活实例（如电脑、手机对比）引入新知，搭建从原级到比较级、最高级的学习支架，明确两者使用场景及五条变化规则。 资料亮点在于规则讲解系统（分单音节、多音节等五类规则，配公式与例句），练习题多样（词形填空、单选等四大题型，紧扣数字生活主题），易错点提示精准，助力学生提升语言能力（语法理解与表达）、思维品质（规则辨析与应用）和学习能力（自主练习与纠错），适合课堂教学与学生自学。

Unit3 Our digital lives语法讲解与练习 形容词的比较级和最高级讲解(一) 一、核心概念 形容词比较级 Comparative adjectives ✅ 使用场景：对比两个人/两样事物 ✅ 句式标志：句子中常搭配 than（比……） 例句：This computer is newer than that one. 形容词最高级 Superlative adjectives ✅ 使用场景：对比三者或三者以上的人/事物 ✅ 语法规则：最高级前面通常要加定冠词 the ✅ 常搭配范围短语：in our class /of all 例句：This is the most useful app of all. 二、形容词比较级、最高级变化规则 规则 1：单音节形容词 & 部分双音节形容词→直接加 -er /-est 公式：原级 + er（比较级）；原级 + est（最高级） tall → taller → tallest clever → cleverer → cleverest 规则 2：以字母 e 结尾形容词→只加-r /-st nice → nicer → nicest late → later → latest 规则 3：重读闭音节（辅+元+辅结尾）→双写末尾辅音字母,再加 -er/-est sad → sadder → saddest big → bigger → biggest hot → hotter → hottest 规则 4：以「辅音字母+y」结尾的双音节形容词 →变y为 i，再加-er /-est easy → easier → easiest lucky → luckier → luckiest happy → happier → happiest 规则 5：多音节形容词（三个音节及以上）+ 部分双音节形容词 ❌ 不能直接加 -er/-est ✅ 比较级前加 more；最高级前加most most exciting → more exciting → most exciting careful → more careful → most careful popular → more popular → most popular 三、核心基础句型 比较级句型 主语+ be动词+形容词比较级+ than +对比对象 Online games are more interesting than reading. 最高级句型 主语 + be 动词 + the + 形容词最高级 + 范围（in/of…） This is the most useful machine in our home. 易错点 ① 看到than，优先考虑比较级； ② 出现范围 in/of all /in the group,优先考虑最高级,勿忘 the； ③ more 和-er、most 和-est 不能同时使用。 📖配套练习题 第一大题：用所给词适当形式填空 1.This mobile phone is ________(cheap) than that one. 2.Tom’s computer is ________(nice) of all the computers here. 3.The story about digital life is ________(sad) than the cartoon. 4.Using the Internet is ________(easy) way to get information. 5.Watching videos online is ________(exciting) than listening to music. 6.My new tablet is ________(big) than my old one. 7.This is ________(clever) robot I have ever seen. 8.The blue headset is ________(lucky) gift for me. 9.A desktop is ________(heavy) than a laptop. 10.Among all apps, WeChat is ________(popular) in China. 11.This game is ________(interesting) than that one. 12.The new camera is ________(good) .The new camera is ________(modern) than the old one. 13.Friday is ________(busy) day for me because I have many online classes. 14.Your idea is ________(great) than mine. 15.This is ________(simple) way to solve the problem. 16.The white speaker is ________(quiet) than the black one. 17.Travelling online is ________(relaxing) than real travelling for some people. 18.He thinks his phone is ________(cool) in our group. 19.Learning online is ________(hard) than learning in class for some kids. 20.This video is ________(funny) than the last one. 21.Of all the digital tools, the smart watch is ________(useful) for me. 22.The signal here is ________(weak) than in the city centre. 23.Playing games is ________(tiring) than reading e-books. 24.This is ________(nice) photo taken by my new phone. 25.Her way to study online is ________(clear) than yours. 第二大题：单项选择 1.This laptop is ______ than that one. A. light B. lighter C. lightest D. the lightest 2.Among all digital products, this is ______ useful one. A. more B. most C. the most D. much 3.The online lesson is ______ than the offline lesson. A. interesting B. more interesting C. most interesting D. the most interesting 4.The weather today is ______ than yesterday, so I can stay home and surf the Internet. A. bad B. worse C. worst D. the worst 5.This smart watch is ______ of all. Everyone wants it. A. cheap B. cheaper C. cheapest D. the cheapest 6.Writing on a screen is ______ than writing on paper for him. A. easy B. easier C. easiest D. the easiest 7.Of all the videos, this one is ______. A. exciting B. more exciting C. most exciting D. the most exciting 8.His new computer is ______ than mine. It works fast. A. new B. newer C. newest D. the newest 9.This app is ______ to use than that one. It has clear menus. A. simple B. simpler C. simplest D. the simplest 10.I think chatting online is ______ activity in my free time. A. enjoyable B. more enjoyable C. most enjoyable D. the most enjoyable 11.The blue earphone is ______ than the red one. A. nice B. nicer C. nicest D. the nicest 12.This is ______ robot in the shop. It can help people clean rooms. A. clever B. cleverer C. cleverest D. the cleverest 13.Online shopping is ______ than shopping in malls. A. convenient B. more convenient C. most convenient D. the most convenient 14.The signal in the countryside is ______ than in cities. A. weak B. weaker C. weakest D. the weakest 15.Playing too many games is ______ thing for teenagers. A. bad B. worse C. worst D. the worst 第三大题：句子改写 1.Tom’s phone is cheap. Jack’s phone is cheaper.（合并一句） Jack’s phone is ________ ________ Tom’s. 2.This game is exciting. That game is more exciting.（合并一句） That game is ________ ________ this one. 3.The red tablet is the nicest in the store.（改为比较级，两句对比） The red tablet is ________ ________ any other tablet in the store. 4.Maths online lessons are difficult. English online lessons are less difficult.（同义改写） Maths online lessons are ________ ________ English online lessons. 5.This is the most popular app of all.（改为同义句） This app is ________ popular than ________ ________ apps. 6.My laptop is big. Your laptop is bigger.（合并） Your laptop is ________ ________ mine. 7.She thinks e-books are interesting. Paper books are more interesting. Paper books are ________ ________ e-books for her. 8.The smart watch is the most useful tool here.（比较级转换） The smart watch is ________ useful than ________ ________ tools here. 9.This video is easy to understand. The last video is easier. The last video is ________ ________ this one. 10.This is the clearest photo in the album. This photo is ________ than ________ ________ photos in the album. 第四大题：汉译英 1.平板电脑比手机屏幕更大。_________________________________________ 2.这是所有电子产品中最便宜的一款。_______________________________________ 3.网上学习比线下学习更加方便。_________________________________________ 4.这款耳机比那款更好看。_________________________________________ 5.在我们班级里，他最擅长使用数字设备。___________________________________ 6.看短视频比阅读电子书更加令人兴奋。_________________________________ 7.这是我见过最智能的机器人。_________________________________________ 8.线上聊天比面对面聊天更轻松吗？_________________________________________ 9.这个应用软件是所有软件里面最简单的。___________________________________ 10.新电脑运行速度比旧电脑更快。_________________________________________ Keys 一、词形填空 1.cheaper 2.the nicest 3.sadder 4.the easiest 5.more exciting 6.bigger 7.the cleverest 8.the luckiest 9.heavier 10.the most popular 11.more interesting 12.better;more modern 13.the busiest 14.greater 15.the simplest 16.quieter 17.more relaxing 18.the coolest 19.harder 20.funnier 21.the most useful 22.weaker 23.more tiring 24.the nicest 25.clearer 二、单项选择 1.B 2.C 3.B 4.B 5.D 6.B 7.D 8.B 9.B 10.D 11.B 12.D 13.B 14.B 15.D 三、句子改写 1.cheaper than 2.more exciting than 3.nicer than 4.more difficult than 5.more; the other 6.bigger than 7.more interesting than 8.more; the other 9.easier than 10. clearer; the other 四、汉译英 1.A tablet has a bigger screen than a mobile phone. 2.This is the cheapest product among all electronic products. 3.Studying online is more convenient than studying offline. 4.This pair of earphones is nicer than that pair. 5.He is the best at using digital devices in our class. 6.Watching short videos is more exciting than reading e-books. 7.This is the cleverest robot I have ever seen. 8.Is chatting online more relaxing than talking face to face? 9.This app is the simplest of all the apps. 10.The new computer runs faster than the old one. 2 / 2 学科网（北京）股份有限公司 $