Unit 3 Are you Su Hai单元语法专项-2026-2027学年上学期英语三年级上册（译林版三起新教材）

**基本信息** 聚焦be动词一般疑问句系统训练，以“概念-用法-应用-纠错”逻辑链构建知识体系，融合基础夯实与综合运用，提升语言能力与思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |核心语法总结|6大知识点|be动词主谓匹配表、句式变形公式、易错警示（疑问句语序/回答人称等）|从基本概念（be动词用法）到功能句型（身份确认/班级询问），再到缩写规则与固定搭配，形成完整认知链| |专项练习|10类题型|基础填空（主语-动词匹配）、改错（针对性纠错）、短文填空（语境应用）|由单一知识点（练习一/二）到综合运用（练习九/十），梯度覆盖“识别-理解-应用-迁移”能力层级|

Unit 3 Are you Su Hai?单元语法专项-2026-2027学年上学期英语三年级上册（译林版三起新教材） 第一部分 单元核心语法知识点总结 一、be动词一般疑问句基本概念 本单元围绕“确认人物身份、认识新朋友”主题，重点学习be动词(am/is/are)引导的一般疑问句，用于询问对方身份、确认人物信息，同时学习询问所在班级的核心句型。 核心语境标志：Are you...? Yes, I am. No, I'm not. What class...? 二、be动词的用法（am / is / are） 1. 基本用法 主语类型 对应 be 动词 I am you /we/they / 复数名词 are he /she/it / 单数名词 / 人名 is 2. 全句式变形表 句式 结构公式 教材原句示例 肯定句 主语 + am/is/are + 其他 You are Su Hai. 否定句 主语 + am not /isn't /aren't + 其他 I'm not Su Hai. 一般疑问句 Am / Is / Are + 主语 + 其他？ Are you Su Hai? 简略回答 Yes, 主语 + am/is/are. No, 主语 + am not /isn't /aren't. Yes, I am. / No, I'm not. 三、核心功能句型 用于身份确认与班级询问，是本单元交际核心句式。 功能 句型结构 教材原句示例 确认对方身份 Are you + 人名？ Are you Su Hai? 询问所在班级 What class are you in? What class are you in? 回答班级 I'm in Class + 数字. I'm in Class 2. 四、缩写规则（必背） 完整形式 缩写形式 使用场景 I am I'm 自我介绍、肯定表述 you are you're 描述对方情况 is not isn't 单数否定句 are not aren't 复数 / 第二人称否定句 ⚠️ 五、高频易错警示 1. 疑问句语序错误：be动词必须提前至句首（错误：You are Su Hai? → 正确：Are you Su Hai?）。 2. 回答人称错配：问句用Are you提问，回答必须换为I（错误：Yes, you are. → 正确：Yes, I am.）。 3. 班级书写不规范：Class后接数字时，Class首字母必须大写（错误：class 1 → 正确：Class 1）。 4. 否定缩写拼写错误：are not 缩写为 aren't，不可写成 are'nt；is not 缩写为 isn't。 六、单元核心固定搭配（语法常考搭配） Are you...? 你是……吗？ Yes, I am. 是的，我是。 No, I'm not. 不，我不是。 What class are you in? 你在哪个班？ I'm in Class 1. 我在一班。 look the same 看起来一样 excuse me 对不起，打扰一下 twin sisters 双胞胎姐妹 new classmate 新同学 第二部分 语法专项练习题 练习一 写出对应形式（基础夯实） A 写出下列主语对应的be动词 1. I ________ 2. you ________ 3. he ________ 4. she ________ 5. it ________ 6. we ________ 7. they ________ 8. Su Hai ________ 9. the twins ________ B 写出完整形式或缩写形式 1. I'm = ________ 2. you are = ________ 3. is not = ________ 4. are not = ________ 5. I am = ________ 6. you're = ________ 练习二 用 am / is / are 填空 1. — ____ you Su Hai? — Yes, I ____. 2. She ____ Su Yang. She ____ in Class 2. 3. I ____ Liu Tao. I ____ in Class 1. 4. — ____ he Mike? — No, he ____ not. 5. You ____ my friend. 6. The twins ____ in the same school. 7. — What class ____ you in? — I ____ in Class 1. 8. It ____ a little cat. 9. Bobby and Sam ____ good friends. 10. Miss Li ____ our English teacher. 11. — ____ you John? — No, I ____ not. I'm Jake. 12. This ____ my new classmate. 13. What ____ your name? 14. — ____ they twins? — Yes, they ____. 15. I ____ not Su Hai. I ____ Su Yang. 练习三 用所给词的适当形式填空（单句语法运用） 1. ________ (be) you Su Hai? 2. No, I ________ (be not). I'm Su Yang. 3. He ________ (be not) Jake. He is John. 4. What class ________ (be) you in? 5. They ________ (be) twins. They ________ (look) the same. 6. I ________ (be) in Class 1 with you. 7. She ________ (be) my new classmate. 8. ________ (be) he your friend? 9. You ________ (be) right. 10. The boy ________ (be) Liu Tao. 11. — ________ (be) they in Class 2? — No, they ________ (be not). 12. Excuse me, ________ (be) you Miss Li? 13. This ________ (be not) my pencil. 14. Su Hai and Su Yang ________ (be) twin sisters. 15. I ________ (have) a good friend at school. 16. The girl ________ (look) like her sister. 17. — ________ (be) that a dog? — Yes, it is. 18. We ________ (be) in the same school. 19. Who ________ (be) the boy over there? 20. You ________ (be) my deskmate. 练习四 句子改错（找出下列各句中的一处错误并改正） 1. Is you Su Hai? ________ 改为 ________ 2. Yes, you are. ________ 改为 ________ 3. I'm in class 1. ________ 改为 ________ 4. Are she your sister? ________ 改为 ________ 5. No, I am. ________ 改为 ________ 6. You're is right. ________ 改为 ________ 7. What class is you in? ________ 改为 ________ 8. He aren't John. He's Jake. ________ 改为 ________ 9. They is twins. ________ 改为 ________ 10. I amn't Su Hai. ________ 改为 ________ 练习五 按要求改写句子（句型转换核心训练） 1. I'm Su Yang.（改为一般疑问句，并作否定回答） 2. You are Su Hai.（改为一般疑问句，并作肯定回答） 3. He is John.（改为否定句） 4. They are twins.（改为一般疑问句，并作肯定回答） 5. I'm in Class 1.（对划线部分提问） 6. She is in Class 2.（ 对划线部分提问） 7. Are you Liu Tao?（作肯定回答） 8. Is he Jake?（作否定回答） 9. I'm Yang Ling.（ 对划线部分提问） 10. They are good friends.（改为否定句） 11. This is my sister.（改为一般疑问句） 12. You are right.（ 对划线部分提问） 13. He is my new classmate.（ 对划线部分提问） 14. Su Hai is in Class 1.（ 对划线部分提问） 15. The twins look the same.（改为一般疑问句） 练习六 单项选择（语法辨析·易错点强化） ( ) 1. — ____ you Su Hai? — No, I'm Su Yang. A. Am B. Is C. Are ( ) 2. — Are you Liu Tao? — Yes, ____. A. I am B. you are C. he is ( ) 3. Su Hai and Su Yang ____ twins. A. is B. are C. am ( ) 4. — What class are you in? — I'm in ____. A. class 1 B. Class 1 C. Class one ( ) 5. He ____ my new friend. A. am B. is C. are ( ) 6. — Is he John? — No, ____. A. he isn't B. he is C. he aren't ( ) 7. ____ right. You are Su Yang. A. You're B. Your C. You ( ) 8. — Excuse me, ____ you Miss Li? — Yes, I am. A. is B. are C. am ( ) 9. Which of the following sentences is CORRECT? A. Are you Jake? B. Is you John? C. Am she Su Hai? ( )10. They ____ look the same. A. are B. is C. / ( )11. — Who ____ the girl? — She's Su Yang. A. is B. are C. am ( )12. I'm ____ Class 2. A. on B. in C. at ( )13. Which is the right short form? A. are not = are't B. is not = isn't C. am not = amn't ( )14. — ____ is the boy? — He's Liu Tao. A. What B. Who C. Where ( )15. ____ lovely twins! A. How B. What C. What a ( )16. Which word has the same vowel sound as "class"? A. cat B. car C. cake ( )17. You ____ in Class 1. I ____ in Class 1 too. A. are; am B. is; am C. are; is ( )18. — Are they in the same class? — No, ____. A. they are B. they aren't C. we aren't ( )19. — Who ____ your English teacher? — Miss Li. A. is B. are C. am ( )20. The story ____ us we should be kind to new classmates. A. tell B. tells C. told 练习七 根据汉语提示完成句子（汉译英语法输出） 1. 你是苏海吗？ ________________ Su Hai? 2. 不，我不是。我是苏洋。 No, ________________. I'm Su Yang. 3. 你在哪个班？ ________________ you in? 4. 我在一班。 ________________ Class 1. 5. 他们是双胞胎。 ________________ twins. 6. 他是你的新同学吗？ ________________ your new classmate? 7. 你说得对。 ________________ right. 8. 打扰一下，你是王兵吗？ Excuse me, ________________ Wang Bing? 9. 苏海和苏洋看起来一样。 Su Hai and Su Yang ________________. 10. 他不是杰克。他是约翰。 ________________ Jake. He's John. 练习八 句型综合改写（灵活运用训练） 1. 将句子改为一般疑问句：I'm Liu Tao. 2. 将句子改为否定句：She is my sister. 3. 同义句转换：You are right. 4. 将单数句改为复数句：He is in Class 1. 5. 将句子改为一般疑问句：They are good friends. 6. 对划线部分提问：She is Su Yang. 7. 用 in Class 2 改写句子：I'm in Class 1. 8. 用 he 改写句子：Are you a student? 练习九 短文填空（语法运用·用所给词的适当形式填空 共2篇） Passage 1（基础篇·贴合教材Story time） One day, Mike meets a girl at school. “Hello! 1. ____ (be) you Su Hai?” asks Mike. “No, I 2. ____ (be not). I'm Su Yang.” “Oh, you look the same! 3. ____ (be) you twins?” “Yes, we 4. ____ (be). I'm in Class 2. Su Hai 5. ____ (be) in Class 1.” “6. ____ (be) she in Class 1 with me?” “Yes, she 7. ____ (be). You can play with her.” “Thank you! You 8. ____ (be) very nice.” They 9. ____ (be) happy to meet each other. They 10. ____ (become) good friends soon. Passage 2（提升篇·贴合教材Cartoon time拓展） Bobby wants to find his friend Jake. “Hi! 1. ____ (be) you Jake?” Bobby asks. “No, I 2. ____ (be not). I'm John.” Bobby asks another boy, “3. ____ (be) you Jake?” “No, I'm not. I'm John too.” Bobby is confused. There 4. ____ (be) two Johns! Then a boy shouts, “Ha ha! Here I 5. ____ (be)! I'm Jake.” “Oh, there you 6. ____ (be)! I want to play with you.” Jake 7. ____ (be) very happy. They 8. ____ (play) together. They 9. ____ (be) good friends. They 10. ____ (have) great fun. 练习十 情景交际补全对话（语法+交际综合运用） 从方框中选择合适的句子补全对话，有两项多余。 ( A. Are you Su Hai? B. What class are you in? C. Nice to meet you. D. No, I'm not. E. I'm in Class 1 too. F. Who's the girl? G. Is he your friend? ) A: Hello! 1.____ B: No, I'm not. I'm Su Yang. A: Oh, sorry. 2.____ B: I'm in Class 2. A: 3.____ B: She's Su Hai. She's my twin sister. A: 4.____ B: Yes, she is. She's in Class 1. A: Great! 5.____ B: Cool! We can play together. 参考答案 练习一 写出对应形式 A 1. am 2. are 3. is 4. is 5. is 6. are 7. are 8. is 9. are B 1. I am 2. you're 3. isn't 4. aren't 5. I'm 6. you are 练习二 用 am / is / are 填空 1. Are; am 2. is; is 3. am; am 4. Is; is 5. are 6. are 7. are; am 8. is 9. are 10. is 11. Are; am 12. is 13. is 14. Are; are 15. am; am 练习三 用所给词的适当形式填空 1. Are 2. am not / I'm not 3. isn't 4. are 5. are; look 6. am 7. is 8. Is 9. are 10. is 11. Are; aren't 12. are 13. isn't 14. are 15. have 16. looks 17. Is 18. are 19. is 20. are 练习四 句子改错 1. Is → Are 2. you → I 3. class → Class 4. Are → Is 5. am → am not 6. 去掉 is 7. is → are 8. aren't → isn't 9. is → are 10. amn't → am not / I'm not 练习五 按要求改写句子 1. Are you Su Yang? No, I'm not. 2. Are you Su Hai? Yes, I am. 3. He isn't John. 4. Are they twins? Yes, they are. 5. What class are you in? 6. What class is she in? 7. Yes, I am. 8. No, he isn't. 9. Who are you? 10. They aren't good friends. 11. Is this your sister? 12. What do you think? 13. Who is he? 14. Who is in Class 1? 15. Do the twins look the same? 练习六 单项选择 1.C 2.A 3.B 4.B 5.B 6.A 7.A 8.B 9.A 10.C 11.A 12.B 13.B 14.B 15.B 16.B 17.A 18.B 19.A 20.B 练习七 根据汉语提示完成句子 1. Are you 2. I'm not 3. What class are 4. I'm in 5. They are 6. Is he 7. You're 8. are you 9. look the same 10. He isn't 练习八 句型综合改写 1. Are you Liu Tao? 2. She isn't my sister. 3. You're right. 4. They are in Class 1. 5. Are they good friends? 6. Who is she? 7. I'm in Class 2. 8. Is he a student? 练习九 短文填空 Passage 1 1. Are 2. am not 3. Are 4. are 5. is 6. Is 7. is 8. are 9. are 10. become Passage 2 1. Are 2. am not 3. Are 4. are 5. am 6. are 7. is 8. play 9. are 10. have 练习十 情景交际补全对话 1.A 2.B 3.F 4.G 5.E ( 第 1 页 共 14 页 ) 学科网（北京）股份有限公司 $