Unit 1 Let's be friends！重点梳理易错考点（专项训练）-2026-2027学年外研版（三起）英语三年级上册

**基本信息** 聚焦外研版三年级上册Unit 1核心语法与交际用语，以10大易错考点为框架，构建"基础-提升-拓展"三阶训练体系，融合规则口诀与情境应用，系统强化语言能力与学习策略。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |10大易错考点|每考点9题（基础/提升/拓展各3题）|be动词用法口诀、缩写规则、句型结构模板等|从词法（代词/物主代词）到句法（be动词/句型），再到交际应用（问候/介绍），层层递进，形成完整基础语法网络|

最新外研版（三起）三年级上册 Unit 1 Let's be friends! 重点梳理 + 10大易错考点专项训练 ★ 重点单词 【人称/代词类】 I you she he we they my your 【名词/数词类】 friend friends nine twins morning afternoon everyone 【形容词/动词/其他】 new happy good fine great welcome play help sing come together too from goodbye thank here ★ 重点短语 I'm = I am（我是） She's = She is（她是） He's = He is（他是） We're = We are（我们是） Let's = Let us（让我们） Nice to meet you.（很高兴认识你。） Good morning!（早上好！） Good afternoon!（下午好！） How are you?（你好吗？） I'm fine, thank you.（我很好，谢谢。） What's your name?（你叫什么名字？） My name is...（我的名字是……） We're from the UK.（我们来自英国。） play together（一起玩） make new friends（交新朋友） help my friends（帮助我的朋友们） Here you are.（给你。） Have a nice day!（祝你今天愉快！） ★ 重点句型 Hello! / Hi!（你好！） I'm Lingling.（我叫玲玲。） She's Amy. She's nine, too.（她是埃米。她也九岁。） He's Sam.（他是萨姆。） We're twins.（我们是双胞胎。） Let's be friends!（让我们成为朋友吧！） — What's your name? — My name is Daming.（你叫什么名字？——我叫大明。） — How are you? — I'm fine, thank you.（你好吗？——我很好，谢谢。） — Nice to meet you. — Nice to meet you, too.（很高兴认识你。——见到你也很高兴。） — Are you a good friend? — Yes. I help my friends.（你是一个好朋友吗？——是的。我帮助我的朋友们。） We're from the UK.（我们来自英国。） Good morning, everyone!（大家早上好！） ★ 重点语法 1. be动词用法：I 用 am；you/we/they 用 are；he/she 用 is 2. 缩写形式：I'm = I am；He's = He is；She's = She is；We're = We are；Let's = Let us 3. 自我介绍句型：I'm + 名字. / My name is + 名字. 4. 介绍他人句型：He's / She's + 名字. 5. 询问姓名：What's your name? — My name is... / I'm... 6. 问候句型：Good morning! / Good afternoon! / How are you? 7. 初次见面：Nice to meet you. — Nice to meet you, too. 8. 人称代词：I / you / he / she / we / they 的区分 9. 物主代词：my（我的）/ your（你的）后接名词 10. 建议句型：Let's + 动词原形.（Let's be friends! / Let's play together!） 考点1：考点一：be动词的用法（I用am；you/we/they用are；he/she用is） ◇ 基础题：（选择题） ◇（ ）1. I ____ Lingling. A. am B. is C. are ◇（ ）2. She ____ Amy. She is nine. A. am B. is C. are ◇（ ）3. We ____ from the UK. A. am B. is C. are ▷ 提升题：（选择题） ▷（ ）1. — How are you? — I ____ fine, thank you. A. am B. is C. are ▷（ ）2. They ____ good friends. They play together. A. am B. is C. are ▷（ ）3. He ____ my friend. His name is Zhou Kai. A. am B. is C. are ★ 拓展题：（选择题） ★（ ）1. In ____ (Qingdao), people are friendly. They ____ happy to meet you. A. am; are B. is; am C. are; is ★（ ）2. The rule: I ____; you/we/they ____; he/she ____. A. am; are; is B. is; am; are C. are; is; am ★（ ）3. Choose the correct sentence. A. A. She am nine. B. B. He is nine. C. C. I are nine. 考点2：考点二：缩写形式的辨认（I'm / He's / She's / We're / Let's） ◇ 基础题：（选择题） ◇（ ）1. I'm Lingling. "I'm" is short for ____. A. I am B. I is C. I are ◇（ ）2. He's Sam. "He's" is short for ____. A. He am B. He is C. He are ◇（ ）3. We're from the UK. "We're" is short for ____. A. We am B. We is C. We are ▷ 提升题：（选择题） ▷（ ）1. She's nine. "She's" means ____. A. She am B. She is C. She are ▷（ ）2. Let's be friends! "Let's" is short for ____. A. Let is B. Let are C. Let us ▷（ ）3. Which is WRONG? A. A. I'm Sam. B. B. He's Amy. C. C. They's friends. ★ 拓展题：（选择题） ★（ ）1. In ____ (Wuhan), Olivia says "____" to mean "I am happy." A. I'm B. He's C. She's ★（ ）2. Match: "We are" = ____; "She is" = ____. A. We're; She's B. We's; Her's C. Us're; She's ★（ ）3. Expand "Let's" correctly. A. A. Let us B. B. Let is C. C. Let are 考点3：考点三：自我介绍句型（I'm + 名字 / My name is + 名字） ◇ 基础题：（选择题） ◇（ ）1. — Hello! — Hi! ____ Jam. A. I'm B. He's C. She's ◇（ ）2. — What's your name? — ____ Chen Wei. A. I'm B. He's C. She's ◇（ ）3. Olivia says: "____ name is Lily." A. I B. My C. He ▷ 提升题：（选择题） ▷（ ）1. — My name is Zhang Hao. — ____ is Bella. A. I B. My C. My name ▷（ ）2. Choose the correct self-introduction. A. A. He's Lily. B. B. I'm Lily. C. C. She's Lily. ▷（ ）3. — What's your name? — ____. A. A. I'm Bella. B. B. He's Bella. C. C. She's Bella. ★ 拓展题：（选择题） ★（ ）1. In ____ (Xiamen), when you meet a new friend, you say: "____" A. I'm... B. He's... C. She's... ★（ ）2. Two ways to introduce yourself: "I'm..." and "____". A. A. My name is... B. B. He is... C. C. She is... ★（ ）3. Bella writes in her diary: "Today I met a girl. ____ name is Lily." A. I B. My C. Her 考点4：考点四：介绍他人句型（He's / She's + 名字） ◇ 基础题：（选择题） ◇（ ）1. — Who is he? — ____ Sam. A. I'm B. He's C. She's ◇（ ）2. — Is she Amy? — Yes, ____ is nine. A. I'm B. He's C. She's ◇（ ）3. This is Lily. ____ is my friend. A. I B. He C. She ▷ 提升题：（选择题） ▷（ ）1. Zhou Kai is a boy. ____ is from Jinan. A. I B. He C. She ▷（ ）2. Olivia is a girl. ____ is nine. A. I B. He C. She ▷（ ）3. They are twins. ____ are from Kunming. A. I B. He C. They ★ 拓展题：（选择题） ★（ ）1. In ____ (Kunming), Chen Wei introduces his friend: "____ is Zhang Hao." A. He's B. She's C. I'm ★（ ）2. Lily says: "This is my sister. ____ is Bella." A. He's B. She's C. I'm ★（ ）3. Choose the correct introduction of a boy. A. A. She's Jam. B. B. He's Jam. C. C. I'm Jam. 考点5：考点五：询问姓名（What's your name? 及回答） ◇ 基础题：（选择题） ◇（ ）1. — What's your name? — ____ name is Lily. A. I B. My C. He ◇（ ）2. — What's ____ name? — My name is Chen Wei. A. I B. my C. your ◇（ ）3. — What's her name? — ____ is Olivia. A. I B. He C. She ▷ 提升题：（选择题） ▷（ ）1. — What's his name? — ____ is Zhang Hao. A. I B. He C. She ▷（ ）2. — ____ your name? — I'm Bella. A. What B. What's C. What are ▷（ ）3. Choose the correct question for asking a girl's name. A. A. What's his name? B. B. What's her name? C. C. What's your name? ★ 拓展题：（选择题） ★（ ）1. In ____ (Qingdao), a teacher asks a new student: "____" A. What's your name? B. What's her name? C. What's his name? ★（ ）2. The correct response to "What's your name?" is ____. A. A. I'm fine. B. B. I'm Olivia. C. C. She's Olivia. ★（ ）3. Match: "What is" = ____; "What are" = ____. A. What's; What're B. What's; What is C. What is; What's 考点6：考点六：问候句型（Good morning! / Good afternoon! / How are you?） ◇ 基础题：（选择题） ◇（ ）1. — Good morning, everyone! — ____, Miss Li. A. Good morning B. Good afternoon C. Goodbye ◇（ ）2. — Good afternoon, class. — ____, Mr Wang. A. Good morning B. Good afternoon C. Hello ◇（ ）3. — How are you? — I'm fine, ____ you. A. thank B. thanks C. hello ▷ 提升题：（选择题） ▷（ ）1. — ____, Lily. — Hello, Olivia. A. Goodbye B. Hello C. Good morning ▷（ ）2. When you meet a teacher at 10 a.m., you say: ____. A. Good afternoon! B. Good morning! C. Goodbye! ▷（ ）3. — How is she? — ____ is fine. A. I B. He C. She ★ 拓展题：（选择题） ★（ ）1. In ____ (Wuhan), people greet each other warmly. "____" is for morning. A. Good afternoon! B. Good morning! C. Goodbye! ★（ ）2. Choose the polite response to "How are you?". A. A. I'm fine, thank you. B. B. Goodbye. C. C. Hello. ★（ ）3. At 2 p.m. in ____ (Xiamen), you say: "____" A. Good morning! B. Good afternoon! C. How are you? 考点7：考点七：初次见面用语（Nice to meet you. — Nice to meet you, too.） ◇ 基础题：（选择题） ◇（ ）1. — Nice to meet you. — Nice to ____ you, too. A. meet B. meets C. met ◇（ ）2. — Let's be friends! — ____! A. OK B. Goodbye C. Sorry ◇（ ）3. — Are you a good friend? — ____. I help my friends. A. Yes B. No C. Sorry ▷ 提升题：（选择题） ▷（ ）1. Olivia meets Lily for the first time. She says: "____" A. Nice to meet you. B. Goodbye. C. How are you? ▷（ ）2. — Nice to meet you, too. — Let's ____ together! A. plays B. play C. playing ▷（ ）3. Chen Wei says: "I help my friends." He is a ____ friend. A. bad B. good C. new ★ 拓展题：（选择题） ★（ ）1. In ____ (Jinan), when Bella meets a new classmate, she says: "____" A. Nice to meet you. B. Goodbye. C. I'm fine. ★（ ）2. The reply "Nice to meet you, too" means the other person feels ____. A. sad B. happy too C. tired ★（ ）3. Complete: "Are you a good friend?" — "____. I share with my friends." A. No B. Sorry C. Yes 考点8：考点八：人称代词的区分（I / you / he / she / we / they） ◇ 基础题：（选择题） ◇（ ）1. ____ am a student. My name is Lily. A. I B. He C. She ◇（ ）2. ____ is a boy. His name is Zhang Hao. A. I B. He C. She ◇（ ）3. ____ is a girl. Her name is Bella. A. I B. He C. She ▷ 提升题：（选择题） ▷（ ）1. Olivia and Lily are friends. ____ play together. A. I B. He C. They ▷（ ）2. Chen Wei and I are good friends. ____ help each other. A. We B. He C. They ▷（ ）3. — Are ____ a good friend? — Yes, I am. A. I B. you C. he ★ 拓展题：（选择题） ★（ ）1. In ____ (Kunming), ____ (referring to Zhou Kai, a boy) likes to sing. A. he B. she C. they ★（ ）2. Match pronouns: I → ____; he → ____; they → ____. A. me; him; them B. my; his; their C. I; he; they ★（ ）3. Choose the correct sentence. A. A. Her is a girl. B. B. She is a girl. C. C. He am a boy. 考点9：考点九：物主代词 my / your 后接名词 ◇ 基础题：（选择题） ◇（ ）1. ____ name is Chen Wei. A. I B. My C. Me ◇（ ）2. What's ____ name? A. you B. your C. yours ◇（ ）3. She is ____ friend. We play together. A. I B. my C. me ▷ 提升题：（选择题） ▷（ ）1. — Is this ____ book? — Yes, it is my book. A. you B. your C. yours ▷（ ）2. Olivia helps ____ friends after school. A. she B. her C. hers ▷（ ）3. Zhou Kai writes: "____ name is Zhou Kai. This is ____ piggy bank." A. I; my B. My; I C. My; my ★ 拓展题：（选择题） ★（ ）1. In ____ (Qingdao), Lily says: "____ (I) best friend is Olivia." A. I B. My C. Me ★（ ）2. Rule: ____ and ____ come before a noun to show possession. A. my; your B. I; you C. me; you ★（ ）3. Correct the error: "Her name is Lily" → Which word shows possession? A. A. Her B. B. name C. C. is 考点10：考点十：建议句型 Let's + 动词原形（Let's be friends! / Let's play together!） ◇ 基础题：（选择题） ◇（ ）1. Let's ____ friends! A. am B. are C. be ◇（ ）2. Let's ____ together! A. plays B. play C. playing ◇（ ）3. Let's ____ a song! A. sings B. sing C. singing ▷ 提升题：（选择题） ▷（ ）1. Let's ____ to Olivia! A. comes B. come C. coming ▷（ ）2. Which is WRONG? A. A. Let's be friends! B. B. Let's plays together! C. C. Let's sing a song! ▷（ ）3. Chen Wei says: "We're good friends. Let's ____ help each other!" A. comes B. come C. to come ★ 拓展题：（选择题） ★（ ）1. In ____ (Wuhan), Jam says to his new classmate: "Let's ____ friends!" A. are B. be C. is ★（ ）2. After "Let's", the verb must be in ____. A. A. -s form B. B. -ing form C. C. base form (原形) ★（ ）3. Bella and Lily decide: "Let's ____ a nice day together!" A. has B. have C. having 参考答案与详细解析 考点1：考点一：be动词的用法 ◇ 基础题 1. I ____ Lingling. 答案：A 解析：I 后用 am。 2. She ____ Amy. 答案：B 解析：she 后用 is。 3. We ____ from the UK. 答案：C 解析：we 后用 are。 ▷ 提升题 1. — How are you? — I ____ fine. 答案：A 解析：I 后用 am。 2. They ____ good friends. 答案：C 解析：they 后用 are。 3. He ____ my friend. 答案：B 解析：he 后用 is。 ★ 拓展题 1. In Qingdao... They ____ happy. 答案：A 解析：I 用 am；you/we/they 用 are；he/she 用 is。 2. The rule: I am; you/we/they are; he/she is. 答案：A 解析：牢记口诀：我用 am，你用 are，is 连着他她它。 3. Correct sentence. 答案：B 解析：He is nine. 正确；A 应为 She is；C 应为 I am。 考点2：考点二：缩写形式的辨认 ◇ 基础题 1. I'm is short for... 答案：A 解析：I'm = I am。 2. He's is short for... 答案：B 解析：He's = He is。 3. We're is short for... 答案：C 解析：We're = We are。 ▷ 提升题 1. She's means... 答案：B 解析：She's = She is。 2. Let's is short for... 答案：C 解析：Let's = Let us。 3. Which is WRONG? 答案：C 解析：they 后用 are，应为 They're。 ★ 拓展题 1. Olivia says... 答案：A 解析：Olivia 是女生名，但 "I am happy" 用 I'm。 2. Match: We are = We're; She is = She's. 答案：A 解析：缩写规则：am→'m，is→'s，are→'re。 3. Expand Let's. 答案：A 解析：Let's = Let us。 考点3：考点三：自我介绍句型 ◇ 基础题 1. — Hello! — Hi! ____ Jam. 答案：A 解析：自我介绍用 I'm + 名字。 2. — What's your name? — ____ Chen Wei. 答案：A 解析：回答用 I'm + 名字或 My name is + 名字。 3. Olivia says: ____ name is Lily. 答案：B 解析：my 后接名词 name。 ▷ 提升题 1. — My name is Zhang Hao. — ____ is Bella. 答案：C 解析：Bella 介绍自己用 My name is... 2. Correct self-introduction. 答案：B 解析：I'm Lily. 是标准自我介绍。 3. — What's your name? — ____. 答案：A 解析：回答用 I'm Bella。 ★ 拓展题 1. In Xiamen, you say... 答案：A 解析：自我介绍用 I'm... 2. Two ways: I'm... and My name is... 答案：A 解析：两种自我介绍方式。 3. Bella writes: ...name is Lily. 答案：C 解析：女孩名字用 Her name is... 考点4：考点四：介绍他人句型 ◇ 基础题 1. — Who is he? — ____ Sam. 答案：B 解析：he 用 He's + 名字。 2. — Is she Amy? — Yes, ____ is nine. 答案：C 解析：Amy 是女生，用 She's。 3. This is Lily. ____ is my friend. 答案：C 解析：Lily 是女生，用 She。 ▷ 提升题 1. Zhou Kai is a boy. ____ is from Jinan. 答案：B 解析：男生用 He。 2. Olivia is a girl. ____ is nine. 答案：C 解析：女生用 She。 3. They are twins. ____ are from Kunming. 答案：C 解析：复数用 They。 ★ 拓展题 1. In Kunming... He's Zhang Hao. 答案：A 解析：男生用 He's 介绍。 2. Lily says: ... She's Bella. 答案：B 解析：女生用 She's 介绍。 3. Correct introduction of a boy. 答案：B 解析：He's Jam. 正确介绍男生。 考点5：考点五：询问姓名 ◇ 基础题 1. — What's your name? — ____ name is Lily. 答案：B 解析：回答用 My name is... 2. — What's ____ name? — My name is Chen Wei. 答案：C 解析：问你的名字用 your。 3. — What's her name? — ____ is Olivia. 答案：C 解析：女生用 She。 ▷ 提升题 1. — What's his name? — ____ is Zhang Hao. 答案：B 解析：男生用 He。 2. — ____ your name? — I'm Bella. 答案：B 解析：What's = What is。 3. Ask a girl's name. 答案：B 解析：问女生名字用 What's her name? ★ 拓展题 1. In Qingdao, teacher asks... 答案：A 解析：问新同学名字用 What's your name? 2. Correct response. 答案：B 解析：回答用 I'm Olivia。 3. Match: What is = What's. 答案：A 解析：缩写对应。 考点6：考点六：问候句型 ◇ 基础题 1. — Good morning! — ____. 答案：A 解析：早上好回应 Good morning。 2. — Good afternoon! — ____. 答案：B 解析：下午好回应 Good afternoon。 3. — How are you? — I'm fine, ____ you. 答案：A 解析：固定搭配 thank you。 ▷ 提升题 1. — ____, Lily. — Hello, Olivia. 答案：B 解析：打招呼用 Hello。 2. At 10 a.m. you say... 答案：B 解析：上午用 Good morning! 3. — How is she? — ____ is fine. 答案：C 解析：女生用 She。 ★ 拓展题 1. In Wuhan... morning greeting. 答案：B 解析：早上用 Good morning! 2. Polite response to How are you? 答案：A 解析：I'm fine, thank you. 3. At 2 p.m. in Xiamen... 答案：B 解析：下午用 Good afternoon! 考点7：考点七：初次见面用语 ◇ 基础题 1. — Nice to meet you. — Nice to ____ you, too. 答案：A 解析：固定搭配 meet。 2. — Let's be friends! — ____! 答案：A 解析：同意用 OK 或 Great。 3. — Are you a good friend? — ____. 答案：A 解析：肯定回答用 Yes。 ▷ 提升题 1. Olivia meets Lily... 答案：A 解析：初次见面用 Nice to meet you。 2. — Nice to meet you, too. — Let's ____ together! 答案：B 解析：Let's 后接动词原形 play。 3. Chen Wei... He is a ____ friend. 答案：B 解析：帮助朋友是 good friend。 ★ 拓展题 1. In Jinan, Bella says... 答案：A 解析：初次见面用 Nice to meet you。 2. The reply means... 答案：B 解析：too 表示"也"，对方也感到高兴。 3. Complete: Are you a good friend? — ____. 答案：C 解析：肯定回答用 Yes。 考点8：考点八：人称代词的区分 ◇ 基础题 1. ____ am a student. 答案：A 解析：I 后用 am，主语用 I。 2. ____ is a boy. 答案：B 解析：男生用 He。 3. ____ is a girl. 答案：C 解析：女生用 She。 ▷ 提升题 1. Olivia and Lily... ____ play together. 答案：C 解析：复数用 They。 2. Chen Wei and I... ____ help each other. 答案：A 解析：包括自己用 We。 3. — Are ____ a good friend? 答案：B 解析：问你用 you。 ★ 拓展题 1. In Kunming... Zhou Kai (boy)... 答案：A 解析：男生用 he。 2. Match pronouns. 答案：A 解析：I→me；he→him；they→them。 3. Correct sentence. 答案：B 解析：She is a girl. 正确。 考点9：考点九：物主代词 my / your ◇ 基础题 1. ____ name is Chen Wei. 答案：B 解析：my 后接名词 name。 2. What's ____ name? 答案：B 解析：问你的名字用 your。 3. She is ____ friend. 答案：B 解析：my 后接名词 friend。 ▷ 提升题 1. — Is this ____ book? 答案：B 解析：问你的用 your。 2. Olivia helps ____ friends. 答案：B 解析：her 后接名词 friends。 3. Zhou Kai writes... 答案：C 解析：My name... This is my... ★ 拓展题 1. In Qingdao... my best friend. 答案：B 解析：my 后接名词。 2. Rule: my and your come before a noun. 答案：A 解析：物主代词后接名词。 3. Correct the error: Her name is Lily. 答案：A 解析：Her 是物主代词，表示"她的"。 考点10：考点十：Let's + 动词原形 ◇ 基础题 1. Let's ____ friends! 答案：C 解析：Let's 后接动词原形 be。 2. Let's ____ together! 答案：B 解析：Let's 后接动词原形 play。 3. Let's ____ a song! 答案：B 解析：Let's 后接动词原形 sing。 ▷ 提升题 1. Let's ____ to Olivia! 答案：B 解析：Let's 后接动词原形 come。 2. Which is WRONG? 答案：B 解析：Let's 后接原形，应为 play。 3. Let's ____ help each other! 答案：B 解析：Let's 后接动词原形 come/help 等。 ★ 拓展题 1. In Wuhan... Let's ____ friends! 答案：B 解析：Let's 后接动词原形 be。 2. After Let's, the verb must be in... 答案：C 解析：base form 原形。 3. Let's ____ a nice day together! 答案：B 解析：Let's 后接动词原形 have。 学科网（北京）股份有限公司 $