Unit 3 单元语法：形容词和副词比较级（精讲课件）2026-2027学年八年级英语上册（新教材人教版）

该初中英语课件系统梳理了八年级Unit 3形容词和副词比较级的核心知识，从定义（两者对比）、构成（规则/不规则变化）、句型（原级比较as...as、比较级than等）到修饰词（a lot/much等），构建完整知识网络，体现知识点间逻辑联系。 其亮点在于采用分层练习设计，课后练习结合例句解析与图表比较（如广州和芝加哥对比），拓展练习含单选和单词拼写，培养学生语言运用能力与逻辑思维。这种设计帮助学生巩固基础，教师可精准实施分层教学，提升复习效率。

新人教版/英语/八年级 语 法 专 项 Unit 3 Same or Different 人教版新教材 语法点 Unit 1 Happy Holiday 不定代词 （普通不定代词/复合不定代词） Unit 2 Home Sweet Home 情态动词 Unit 3 Same or Different? 形容词和副词比较级 Unit 4 Amazing Plants and Animals 形容词和副词最高级 Unit 5 What a Delicious Meal! 副词的顺序和感叹句的构成和用法 Unit 6  Plan for Yourself “be going to ” 结构 Unit 7 When Tomorrow Comes 一般将来时will 的用法 Unit 8 Let’s Communicate! if 引导的条件状语从句 2 CONTENT 目录 形容词和副词比较级 1 2 3 课后练习 拓展练习 01 形容词和 副词比较级 形容词和副词比较级 比较级用于两者之间进行对比（A 和 B 两者），表示 “A 更……；A 比 B……”。 形容词比较级：用来比较人 / 事物的特征（高矮、大小、好坏等），修饰名词或作表语。 副词比较级：用来比较动作的方式（做得快、唱得好、起得早），修饰动词。 标志性词：than（比），出现 than 常用比较级。 注意：只对比两者用比较级；三者及以上要用最高级。 This city is more colourful than that one. 这座城市比那座城市更加多姿多彩。 This box is bigger than yours. 这个箱子比你的更大。 She sings louder than her sister. 她唱歌比她妹妹声音更大。 He gets up earlier than his parents. 他起床比他父母更早。 This hotel is cleaner than that one. 这家酒店比那家更干净。 5 形容词和副词比较级 规则 原级 比较级 （1）一般单音节词在词尾加-er和-est long fast longer faster （2）以“e”结尾的单音节词在词尾加-r 和-st nice late nicer later （3）重读闭音节，词尾只有一个辅音字母，须双写最后一个辅音字母，再加-er或-est big hot sad glad bigger hotter sadder gladder （4）辅音字母+y结尾，变y为i，再加-er和-est heavy angry funny heavier angrier funnier 比较级和最高级的构成-规则变化 6 形容词和副词比较级 原级 比较级 good/well 好的 better 更好的 bad 差的，ill 坏的 worse 更差的；更坏的 many/much 多的 more 更多的 little 少的 less 更少的 old 年老的；古老的 older 较老的；较旧的 elder 年长的 far 远的 farther（指距离）更远的 further 较深远的 比较级和最高级的构成-不规则变化 7 形容词和副词比较级 原级比较 VS 比较级--原级比较 原级：形容词、副词不变形，使用单词本身，核心句型 as … as ①核心句型 1：A + be / 实义动词 + as + 原级 + as + B 含义：A 和 B 一样…… 形容词（放在 be 动词后） She is as tall as her sister. 她和她姐姐一样高。 副词（修饰动词） Tom runs as fast as Jack. 汤姆跑得和杰克一样快。 tip：as 与 as 中间只能放原级，不能用比较级 / 最高级。 8 形容词和副词比较级 原级比较 VS 比较级--原级比较 原级：形容词、副词不变形，使用单词本身，核心句型 as … as ②核心句型 2：A + be / 实义动词 + not as /so + 原级 + as + B 含义：A 不如 B……（否定同级比较） not as … as 和not so … as大多情况可以互换；so…as 只能用在否定句，不能用于肯定句。 形容词句式 This room is not as big as that one. = This room is not so big as that one. 这个房间不如那个房间大。 副词句式 He doesn’t write as carefully as his deskmate. 他写字不如他同桌认真。 9 形容词和副词比较级 原级比较 VS 比较级--比较级 ①双方比较，表示一方超过另一方时，用 “比较级 + than” 结构 This park is bigger than that one. 这个公园比那个公园大。 ②用于 “less + 原级 + than”（注意此结构不用于单音节词） This movie is less exciting than the cartoon. 这部电影不如那部动画片令人激动。 ③ 倍数 + 比较级 + than This building is twice taller than the house. 这座楼房比那所房子高出两倍。 10 形容词和副词比较级 原级比较 VS 比较级--比较级 ④ “比较级 + and + 比较级” 表示 “越来越……” The weather is getting warmer and warmer in spring. 春天天气正变得越来越暖和。 ⑤ “the + 比较级……，the + 比较级……” 表示 “越……，就越……” The harder you work, the greater progress you will make. 你越努力，取得的进步就越大。 ⑥ the + 比较级 + of the two + 名词复数 The quieter of the two girls is my deskmate. 两个女孩当中，更文静的那一位是我的同桌。 11 形容词和副词比较级 修饰比较级的副词 a lot，far，a bit，much，even，still，a little 可用在形容词比较级前，表示 …… 得多，更……，…… 一些。 very, really, so, too, rather, pretty, quite 等词后只能用原级。 a lot, much, far 这三个词意思相近，表示程度较高 a lot/much/far + 比较级，意为 “…… 得多” This story is a lot more interesting than that one. 这个故事比那个故事有趣得多。 This city is much busier than my hometown. 这座城市比我的家乡繁华很多。 12 形容词和副词比较级 修饰比较级的副词 a lot，far，a bit，much，even，still，a little 可用在形容词比较级前，表示 …… 得多，更……，…… 一些。 very, really, so, too, rather, pretty, quite 等词后只能用原级。 a little 表示程度较低 a little + 比较级，意为 “…… 一点儿” Tom is a little more hard‑working than his cousin. 汤姆比他的堂兄勤奋一点儿。 Lily is a little quieter than her sister. 莉莉比她的姐姐文静一点儿。 13 形容词和副词比较级 修饰比较级的副词 a lot，far，a bit，much，even，still，a little 可用在形容词比较级前，表示 …… 得多，更……，…… 一些。 very, really, so, too, rather, pretty, quite 等词后只能用原级。 even /still + 比较级，用来强调，加强比较级的意味。 The boy is still taller than his elder brother. 这个男孩仍然比他的哥哥高。 This task is even harder than we expected. 这项任务甚至比我们预想的更难。 The weather today is still colder than yesterday. 今天的天气仍旧比昨天更冷。 14 02 课后练习 课后练习 今年有更多活动。它比去年更加丰富多彩。 艾玛比艾拉高，但是她的头发比艾拉的（头发）短。 艾拉跳舞比艾玛好，但是艾玛唱歌比她声音更大。 艾玛总是起床比我早，但是我学习和她一样努力！ many 的比较级，修饰可数名词复数 activities，表 “更多的” more colorful：多音节形容词比较级，多音节词要加 more 构成比较级；than：比较级标志词，意为 “比”，用于两者对比（今年vs去年） taller：tall 的比较级；shorter：short 的比较级（单音节词 + er）；Ella’s 名词所有格，= Ella’s hair，避免重复写 hair better：well 不规则副词比较级，修饰动词 dances（不规则变化）louder：loud 副词比较级，修饰动词 sings earlier：early 副词比较级，变 y 为 i+er，修饰动词短语 gets up；than 后用宾格 me as + 副词原级 + as：原级比较句型，中间只能用原级，含义 “和…… 一样”；as hard as her 和她一样努力，hard 此处为副词，修饰 work 课后练习 Are you more serious than your cousin less serious Is Tom smarter than Sam smart Does Jack swim faster than Sally fast 课后练习 smaller than larger than better than warmer than cooler than 03 拓展练习 拓展练习 单项选择 1．The new library is ________ than the old one. A．bright B．brighter C．brightest 2．He writes ________ than any other student. A．good B．better C．best 3．We should learn new knowledge ________. A．by ourselves B．by ourself C．ourselves 4．My brother plays basketball ________ than me. A．good B．better C．best 5．He drives ________ than his father. A．more carefully B．careful C．carefully 6．She speaks English ________ than her sister. A．clearly B．more clearly C．most clearly 拓展练习 7．My hair is shorter ________ my cousin’s. A．than B．so C．as 8．Things are ________ than they were before. A．gooder B．better C．well 9．This dress is ________ more beautiful than that one. A．much B．very C．so 10．Betty is much ________ than she was last year. She can run faster now. A．tall B．taller C．tallest D．more tall 11．Daniel eats ________ vegetables than before. He wants to keep fit. A．few B．fewer C．less D．more 12．Tom runs ________ fast as his twin brother. A．so B．as C．more D．most 拓展练习 13．This story is ________ interesting than that one. A．much B．many C．more D．most 14．Playing basketball is ________ exciting than reading. A．much more B．many more C．much D．many 15．She speaks English ________ than before. A．clear B．clearer C．more clearly D．most clearly 16．His bedroom is as tidy ________ mine. A．than B．so C．as D．to 17．Lily sings ________ than any other girl in our class. A．well B．good C．better D．best 18．I think maths is ________ difficult than English for me. A．little B．less C．few D．fewer 拓展练习 19．The new type of car is not as ________ as the old one, and it’s more environmentally friendly. A．expensive B．less expensive C．more expensive 20．—What did you think of your trip to the Great Wall? —Fantastic. It was ________ than I expected. A．exciting B．more exciting C．the most exciting 21．—Who is ________ at playing the piano, you or your deskmate? —My deskmate is ________ better than me at it. A．better; much B．better; more C．good; more 22．The PE classes now are ________ interesting than before, and students are ________ active in them. A．more; more B．much; more C．more; much 23．—Is the school playground as ________ as the new sports center? —No, it’s ________ than the sports center. A．big; small B．big; smaller C．bigger; smaller 拓展练习 单词拼写 1．Tom reads words _______________ (carefully) than before. 2．Chinese people are living _____________ (long) than ever before. 3．Kitty is good at playing musical instruments. She plays the flute __________ (good) than other ones. 4．This frog jumps _____________ (far) than that one. 5．He listens to the teacher ___________________ (attentive) than before. 6．The Chinese team worked _____________ (hard) than ever to compete against Europe and America. 7．With the help of digital tools, we can finish our work _____________ (quick) than before. 8．With the help of modern technology, information spreads _____________ (wide) and faster than ever before. 9．Jane is really talented in singing. I think she sings _____________ (beautiful) than the other students in her class. 10．The _____________ (much) you practice, the _____________ (well) you will speak English. 11．Mike runs ______________ (fast) than Tom. 12．He studies ________________ (hard) than his brother. more carefully longer better farther more attentively harder more quickly more widely more beautifully more better faster harder 24 新人教版/英语/八年级 THE END Unit 3 Same or Different null 98248.305 eng - iTunNORM 000000D8 000000DE 00000875 00000854 00016AC1 0001501F 00007E86 0000741A 00011939 00010E4E� eng - iTunSMPB 00000000 00000210 00000916 000000000042115A 00000000 003BD65E 00000000 00000000 00000000 00000000 00000000 00000000� $