Unit3 核心语法知识点总结（形容词和副词的比较级、单元核心短语和句型)2025-2026学年人教版（2024）八年级英语上册

人教版2024版本八年级上册Unit3 ——核心语法知识点总结（形容词和副词的比较级、单元核心短语和句型) 一、形容词和副词的比较级（单元核心语法） 1. 核心定义 比较级用于对两个人或事物的性质、特征或动作程度进行对比，突出一方比另一方更具某种特质或程度更高。例如“Emma is taller than Ella.”中，“taller”（更高的）是“tall”的比较级，明确体现Emma与Ella在身高上的差异。 2. 构成规则 · 规则变化： 1. 一般情况：词尾加“er”，如tall→taller、fast→faster。 2. 以不发音的“e”结尾：词尾加“r”，如nice→nicer、late→later。 3. 重读闭音节（辅元辅结构）：双写尾字母加“er”，如big→bigger、thin→thinner。 4. 以“辅音字母+y”结尾：变“y”为“i”加“er”，如funny→funnier、easy→easier。 5. 多音节和部分双音节词：词前加“more”，如outgoing→more outgoing、carefully→more carefully。 · 不规则变化： 部分词需特殊记忆，如good/well→better、many/much→more、little→less、far→farther（距离）/further（程度）、old→older（年龄）/elder（辈分）。 3. 核心用法 · 两者比较基本句型： 主语+be动词+形容词比较级+than+比较对象，如“She is more outgoing than me.”（她比我更外向）。 主语+实义动词+副词比较级+than+比较对象，如“He runs faster than his brother.”（他跑得比他哥哥快）。 · 特殊修饰词： 比较级前可加程度副词修饰，如much（……得多）、a little（一点）、even（甚至）等，例如“The blue dress is much longer than the white one.”（蓝裙子比白裙子长得多）。 · “of the two”结构： 当比较范围明确为“两者中”时，比较级前需加“the”，如“Jack is the smarter of the two.”（杰克是两人中更聪明的一个）。 · 否定比较： 用“less+原级+than”表示“不如……”，如“She is less serious than her sister.”（她不如她姐姐严肃）。 二、同级比较（单元重点语法） 1. 肯定结构——“as+原级+as” · 表示“两者在某方面程度相同”，意为“和……一样”。 形容词同级比较：主语+be动词+as+形容词原级+as+比较对象，如“Her hair is as long as mine.”（她的头发和我的一样长）。 副词同级比较：主语+实义动词+as+副词原级+as+比较对象，如“He works as hard as his father.”（他工作和他爸爸一样努力）。 2. 否定结构——“not as/so+原级+as” · 表示“前者不如后者”，“not so”语气比“not as”更委婉。 例如“This room is not as big as that one.”（这个房间不如那个大）、“She doesn’t sing so well as her friend.”（她唱歌不如她朋友好）。 三、核心短语与句型（单元高频考点） 1. 重点短语 compare...with... 把……与……比较 have sth. in common 有共同之处 be different from 与……不同 be similar to 与……相似 care about 关心；在意 bring out 显示；显出 touch one’s heart 触动某人的心 be talented in 在……方面有天赋 as long as 只要 win the first prize 赢得一等奖 the singing competition 歌咏比赛。 2. 重点句型 比较级疑问句：“Who is + 比较级, A or B?”，如“Who runs faster, Lisa or Anna?”（莉萨和安娜谁跑得更快？）。 朋友相关描述：“A good friend is like a mirror.”（好朋友像一面镜子）、“A true friend reaches for your hand and touches your heart.”（真正的朋友会向你伸出援手，触动你的心灵）。 观点表达：“It’s not necessary to be the same.”（没有必要一模一样）、“I don’t really care if my friends are the same as me or different.”（我不太在意朋友是否和我一样）。 分层练习题（梯度递进） 【形式】基础篇 词汇掌握 口语交际 听力理解 书面表达 语音语调 语法运用 阅读理解 综合实践 【水平】 记忆性 理解性 应用性 分析性 评价性 创造性 一、用所给词的适当形式填空 1. My brother is ________ (tall) than me. He often helps me get things from high places. 2. She sings ________ (beautiful) than her sister. She won the school singing competition last year. 3. This story is ________ (interesting) than that one. I want to read it again. 4. My mom works ________ (hard) than my dad, but they both love our family. 5. Tom is not as ________ (outgoing) as his brother. He is quite quiet. 二、单项选择 1. —Who is ________, your math teacher or English teacher? —My English teacher. She always tells jokes. A. funnier B. funny C. funniest D. more funnier 2. This restaurant’s food is ________ than that one. I like it better. A. delicious B. more delicious C. most delicious D. the most delicious 3. Lily’s hair is ________ as her mother’s. They look very similar. A. long B. longer C. as long D. so long 4. He runs ________ faster than me. I can’t catch up with him. A. many B. much C. more D. little 5. Of the two girls, Lucy is ________ one. A. smart B. smarter C. the smarter D. the smartest 【形式】提升篇 词汇掌握 口语交际 听力理解 书面表达 语音语调 语法运用 阅读理解 综合实践 【水平】 记忆性 理解性 应用性 分析性 评价性 创造性 一、单项选择 1. —Is your new school ________ your old one? —No, it’s much bigger. A. as big as B. bigger than C. smaller than D. as bigger as 2. My best friend is ________ me. We both like reading and listening to music. A. different from B. similar to C. as tall as D. not so outgoing as 3. —Why do you like making friends with Mary? —Because she ________ cares about me and always helps me when I’m in trouble. A. really B. hardly C. never D. sometimes 4. Sarah studies ________ carefully than her classmates, so she always gets better grades. A. more B. much C. very D. too 5. —In what ways are you ________ your sister? —I’m more creative, but she is more patient. A. the same as B. different from C. similar to D. as good as 二、句型转换 1. Tom is tall. Jim is taller.（合并为一句） Jim is ________ ________ Tom. 2. My brother runs fast. I run fast too.（改为同级比较句） My brother runs ________ ________ ________ me. 3. This book is interesting. That book is more interesting.（改为比较级句子） That book is ________ ________ than this one. 4. Lucy is outgoing. Lily is less outgoing.（改为同义句） Lucy is ________ ________ than Lily. 5. He is not as hardworking as his sister.（改为同义句） His sister is ________ ________ than him. 【形式】拓展篇 词汇掌握 口语交际 听力理解 书面表达 语音语调 语法运用 阅读理解 综合实践 【水平】 记忆性 理解性 应用性 分析性 评价性 创造性 一、完形填空 My name is Kate. I have a best friend named Lisa. People often say we look similar, but in fact, we are quite ________ (1. different/same). Lisa is ________ (2. tall/taller) than me. She is 165cm, and I’m only 160cm. She is also ________ (3. more outgoing/outgoing) than me. She likes talking to everyone, so she has more friends. But I’m ________ (4. quieter/quiet) and I like reading in my spare time. Though we are different, we ________ (5. have nothing/have something) in common. We both ________ (6. be talented in/ be good at) music. Last month, we joined the school singing competition. Lisa sang ________ (7. more beautifully/beautifully) than me, so she won the first prize. I was really happy for her. Lisa often says, “A good friend is like a mirror. It’s not necessary to be the same ________ (8. as/than) long as you care about each other.” I think she is right. 1. A. different B. same C. the same D. differently 2. A. tall B. taller C. tallest D. the tallest 3. A. more outgoing B. outgoing C. most outgoing D. the most outgoing 4. A. quieter B. quiet C. quietest D. the quietest 5. A. have nothing B. have something C. have everything D. have anything 6. A. be talented in B. be good at C. are talented in D. are good at 7. A. more beautifully B. beautifully C. most beautifully D. the most beautifully 8. A. as B. than C. so D. because 二、阅读理解 Hi, I’m Mike. I have two good friends, Tom and Jack. Let me tell you about them. Tom is as old as me, but he is taller than me. He is more athletic than both Jack and me. He likes playing basketball and he runs faster than most students in our class. Jack is not as tall as Tom, but he is smarter. He studies harder than Tom and me, so he always gets better grades. Tom and Jack have different hobbies. Tom likes sports, and Jack likes reading. But they have one thing in common—they both care about me. Last week, I was ill and couldn’t go to school. Tom helped me take notes, and Jack explained the difficult lessons to me when I got back. I think good friends don’t need to be the same. What matters is that they can help each other and touch your heart. 根据短文内容，回答问题。 1. Who is taller, Mike or Tom? ____________________________________________ 2. Is Jack more athletic than Tom? ____________________________________________ 3. Why does Jack always get better grades? ____________________________________________ 4. What do Tom and Jack have in common? ____________________________________________ 5. What does Mike think of good friends? ____________________________________________ 参考答案 第一部分 基础感知层 一、用所给词的适当形式填空 1. taller 2. more beautifully 3. more interesting 4. harder 5. outgoing 二、单项选择 1. A 2. B 3. C 4. B 5. C 第二部分 语境应用层 一、单项选择 1. A 2. B 3. A 4. A 5. B 二、句型转换 1. taller than 2. as fast as 3. more interesting 4. more outgoing 5. more hardworking 第三部分 综合迁移层 一、完形填空 1. A 2. B 3. A 4. A 5. B 6. D 7. A 8. A 二、阅读理解 1. Tom. 2. No, he isn’t. 3. Because he studies harder than Tom and Mike. 4. They both care about Mike. 5. He thinks good friends don’t need to be the same. What matters is that they can help each other and touch your heart. 学科网（北京）股份有限公司 $