Unit 3 Learning单元知识总结及重点易错（专项训练）-2026-2027学年北师大版（三起）英语三年级上册

**基本信息** 紧扣北师大版三上Unit3核心知识点，以10个重点易错考点为纲，通过基础-提升-拓展三级训练（共90题）系统强化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| |----|-----------|----------|----------| |知识总结|18词+20短语+10句型+7语法|提炼a/an选择、Do you like...回答等7类语法规则|从单词到句型再到语法，构建"词-句-法"递进体系| |专项训练|10考点×9题（每考点含3级）|针对"What's this?"等10类题型，总结语境应用技巧|以考点为单元，从基础辨析到拓展情景交际，实现能力迁移|

最新北师大版（三起）三年级上册Unit 3 Learning 单元知识总结及重点易错专项训练 ■ ■ ■ ■ ■ ■ ■ 说明：本练习紧扣最新教材精选 10 个重点易错考点，每个考点含基础题×3、提升题×3、拓展题×3，共 90 题。 重点单词（共18个） 单词 音标 词性 中文 拓展/例句 do /duː/ v. & aux. 做；助动词 do homework learn /lɜːn/ v. 学习；学到 learn English maths /mæθs/ n. 数学 I like maths. Chinese /ˌtʃaɪˈniːz/ n. 语文，中文 Chinese is interesting. English /ˈɪŋɡlɪʃ/ n. 英语 I like English. PE /ˌpiː ˈiː/ n. 体育课 PE is exciting. not /nɒt/ adv. 不，没有 do not = don't hard /hɑːd/ adj. 困难的 Maths is hard. read /riːd/ v. 阅读 read a book listen /ˈlɪsn/ v. 听 listen to a song sing /sɪŋ/ v. 唱，唱歌 sing a song act /ækt/ v. 表演 act it out poster /ˈpəʊstə(r)/ n. 海报 make a poster let /let/ v. 允许，让 Let me draw. cut /kʌt/ v. 剪，割 Let me cut. stick /stɪk/ v. 粘 cut and stick show /ʃəʊ/ v. 展示 show time interesting /ˈɪntrəstɪŋ/ adj. 有趣的 It's interesting. 重点短语（20组） 短语 中文 教材原句/例句 What's this? 这是什么？ What's this? — It's a pencil. It's a/an... 它是…… It's a book. / It's an eraser. I like... 我喜欢…… I like Chinese. / I like maths. Do you like...? 你喜欢……吗？ Do you like English? Yes, I do. 是的，我喜欢。 Do you like PE? — Yes, I do. No, I don't. 不，我不喜欢。 Do you like maths? — No, I don't. It's interesting. 它很有趣。 Chinese is interesting. It's fun. 它很有趣/好玩。 English is fun. It's hard. 它很难。 Maths is hard. I can help you. 我能帮你。 I can help you with Chinese. learn English 学英语 We learn English at school. read a book 读书 I read a book in class. listen to a song 听歌 Let's listen to a song. sing a song 唱歌 We sing a song together. make a poster 制作海报 Let's make a poster. cut and stick 剪贴 Let me cut and stick. show time 展示时间 It's show time! work in groups 小组合作 We work in groups. help each other 互相帮助 We help each other. What's in your pencil case? 你的铅笔盒里有什么？ What's in your pencil case? — I have a ruler. 重点句型（10组） 功能 英语句型 中文翻译 询问物品 What's this? 这是什么？ 回答物品 It's a pencil. 它是一支铅笔。 表达喜好 I like Chinese. 我喜欢语文。 询问喜好 Do you like maths? 你喜欢数学吗？ 肯定回答 Yes, I do. 是的，我喜欢。 否定回答 No, I don't. 不，我不喜欢。 描述感受 It's interesting/fun/hard. 它很有趣/好玩/很难。 提供帮助 I can help you with Chinese. 我能帮你学语文。 提出建议 Let me draw. / Let's make a poster. 让我画。/让我们一起做海报。 询问内容 What's in your pencil case? 你的铅笔盒里有什么？ 重点语法（7个语法点） ① What's this? — It's a/an + 名词单数：询问近处物品名称，回答用 It's（不用 This is）。注意 a/an 的选择。 ② a / an 的选择：a 用于辅音音素开头（a book, a ruler）；an 用于元音音素开头（an eraser, an English book）。看发音不看字母。 ③ I like + 学科名词：表达喜好。如 I like Chinese. 描述原因用 It's + 形容词（interesting/fun/hard）。 ④ Do you like...? 一般疑问句：肯定回答 Yes, I do. 否定回答 No, I don't. 注意 do/don't 的搭配。三单用 Does...? Yes, he/she does. ⑤ Let me + 动词原形 / Let's + 动词原形：Let me 让我（单数），Let's = Let us 让我们（复数）。后接动词原形。 ⑥ I can help you with + 学科：with 后接名词，表示"帮某人学某科"。如 I can help you with Chinese. ⑦ 名词复数规则变化：book→books, pen→pens, ruler→rulers, crayon→crayons, eraser→erasers。直接加 s。 第二部分：十大重点易错考点专项训练 每个考点含基础题3题 → 提升题3题 → 拓展题3题，全部为选择题，选项横向排列。 考点1：What's this? It's a/an... 询问物品名称 📌 What's this? 句型及 It's a/an + 名词 回答 ◇ 基础题（选择题） ◇ （ ）1. — What's this? — ______ a pencil. A. This is B. It is C. He is D. She is ◇ （ ）2. — What's this? — ______ a book. A. They're B. It's C. You're D. We're ◇ （ ）3. — What's this? — It's ______ eraser. A. a B. an C. the D. ▷ 提升题（选择题） ▷ （ ）1. Olivia has a new thing. She asks: "______?" A. What this is B. What's this C. What are this D. What this ▷ （ ）2. — What's this, Jam? — ______ a ruler. A. It B. Its C. It's D. Is it ▷ （ ）3. Chen Wei points to a crayon and says: "What's ______?" A. this B. these C. those D. they ★ 拓展题（选择题） ★ （ ）1. Lily finds something in her bag. She says: "Look! What's ______?" — "It's a pen." A. that B. this C. they D. these ★ （ ）2. Zhou Kai asks Bella: "______ this?" — "It's a pencil case." A. What B. What's C. What are D. How's this ★ （ ）3. At school, the teacher holds up a book: "Can you tell me ______?" A. what this is B. what is this C. What's this D. How's this 考点2：a / an 冠词选择 📌 a 用于辅音开头 / an 用于元音开头 ◇ 基础题（选择题） ◇ （ ）1. It's ______ eraser. A. a B. an C. the D. ◇ （ ）2. It's ______ ruler. A. a B. an C. the D. ◇ （ ）3. It's ______ book. A. a B. an C. the D. ▷ 提升题（选择题） ▷ （ ）1. — What's this? — It's ______ English book. A. a B. an C. the D. ▷ （ ）2. I have ______ crayon in my pencil case. A. a B. an C. the D. some ▷ （ ）3. This is ______ apple for you. A. a B. an C. the D. ★ 拓展题（选择题） ★ （ ）1. Bella says: "I have ______ orange crayon and ______ red pen." A. a; a B. an; a C. a; an D. an; an ★ （ ）2. The teacher says: "It's ______ interesting subject." A. a B. an C. the D. ★ （ ）3. Zhang Hao has ______ old pencil and ______ new ruler. A. a; a B. an; a C. a; an D. an; an 考点3：I like + 学科/活动 表达喜好 📌 I like Chinese/English/maths/PE 表达喜欢某学科 ◇ 基础题（选择题） ◇ （ ）1. ______ like maths. It's fun. A. I B. He C. She D. They ◇ （ ）2. I like ______. It's interesting. A. Chinese B. a Chinese C. the Chinese D. Chineses ◇ （ ）3. — Do you like PE? — Yes, ______. A. I am B. I do C. I like D. I can ▷ 提升题（选择题） ▷ （ ）1. Lily says: "I like music. ______ makes me happy." A. It B. He C. She D. They ▷ （ ）2. Chen Wei likes art. "It's ______," he says. A. beautiful B. hard C. boring D. bad ▷ （ ）3. — Does Bella like English? — Yes, she ______. A. is B. do C. does D. likes ★ 拓展题（选择题） ★ （ ）1. Olivia says: "I like Chinese. It's interesting ______ it's hard." A. and B. but C. or D. so ★ （ ）2. Jam likes PE ______ it's exciting. He doesn't like maths ______ it's hard. A. because; because B. but; but C. so; so D. and; and ★ （ ）3. Zhou Kai says: "I ______ like English class. It's not fun." A. do B. am C. don't D. not 考点4：Do you like...? 一般疑问句及回答 📌 Do you like...? Yes, I do. / No, I don't. ◇ 基础题（选择题） ◇ （ ）1. — Do you like music? — ______, I do. A. Yes B. No C. Not D. Sorry ◇ （ ）2. — Do you like maths? — No, I ______. A. do B. am not C. don't D. not ◇ （ ）3. — Do you like PE? — ______, I don't. A. Yes B. No C. Not D. Sorry ▷ 提升题（选择题） ▷ （ ）1. — Does Zhang Hao like art? — Yes, he ______. A. do B. does C. is D. likes ▷ （ ）2. — Do they like English? — No, they ______. A. don't B. doesn't C. not like D. aren't ▷ （ ）3. Lily asks Bella: "______ you like Chinese?" — "Yes, I do." A. Are B. Do C. Does D. Is ★ 拓展题（选择题） ★ （ ）1. The teacher asks: "Who ______ like maths?" Chen Wei says: "I do." A. do B. does C. are D. is ★ （ ）2. — Does Olivia like singing? — Yes, she ______. She sings every day. A. do B. does C. is D. can ★ （ ）3. Jam and Chen Wei ______ like reading. They like playing ping-pong. A. don't B. doesn't C. not D. aren't 考点5：It's + 形容词 描述感受 📌 It's interesting/fun/hard/exciting 描述学科特点 ◇ 基础题（选择题） ◇ （ ）1. I like English. It's ______. A. hard B. fun C. boring D. sad ◇ （ ）2. Maths is ______ for me. I need help. A. easy B. fun C. hard D. interesting ◇ （ ）3. Chinese is very ______. I like it. A. interesting B. hardly C. sad D. bad ▷ 提升题（选择题） ▷ （ ）1. Olivia says: "Music makes me ______. I like it." A. sad B. angry C. happy D. tired ▷ （ ）2. PE is ______. We run and jump. A. exciting B. boring C. hard D. quiet ▷ （ ）3. Jam thinks art is ______. He draws beautiful pictures. A. beautiful B. hard C. boring D. noisy ★ 拓展题（选择题） ★ （ ）1. Chen Wei says: "Maths is hard ______ I can learn it well with help." A. and B. but C. or D. so ★ （ ）2. Bella thinks English is ______ and ______. She likes it a lot. A. hard; boring B. fun; interesting C. sad; bad D. tired; hard ★ （ ）3. The teacher says: "Learning is hard ______ it can be fun too." A. and B. but C. or D. so 考点6：Let me... / Let's... 祈使句 📌 Let me draw/cut/write 让我做 / Let's make a poster 让我们一起做 ◇ 基础题（选择题） ◇ （ ）1. ______ me draw a picture. A. Let B. Let's C. Let me to D. Let to ◇ （ ）2. ______ make a poster together. A. Let B. Let me C. Let's D. Let we ◇ （ ）3. Let me ______ and stick. A. to cut B. cutting C. cut D. cuts ▷ 提升题（选择题） ▷ （ ）1. Olivia says: "Let me ______ the poster. It's beautiful!" A. to write B. writing C. write D. writes ▷ （ ）2. The teacher says: "Let's ______ it together, boys and girls." A. to do B. do C. doing D. does ▷ （ ）3. Jam says: "Let ______ help you with English." A. I B. me C. my D. mine ★ 拓展题（选择题） ★ （ ）1. Bella and Lily work together. Bella says: "Let me cut." Lily says: "Let ______ write!" A. I B. me C. my D. mine ★ （ ）2. The teacher says: "______ show your poster to the class." A. Let me B. Let's C. Let we D. Let he ★ （ ）3. Chen Wei says: "Let me draw a picture. ______ is fun!" A. Draw B. To draw C. Drawing D. Draws 考点7：What's in your pencil case? 询问物品与数量 📌 What's in your pencil case? I have a/an... / How many... do you have? ◇ 基础题（选择题） ◇ （ ）1. — What's in your pencil case? — I ______ a ruler. A. has B. am C. have D. do ◇ （ ）2. — How many pencils do you have? — I have ______ pencils. A. a B. an C. three D. the ◇ （ ）3. — What's in your schoolbag? — I have ______ eraser. A. a B. an C. the D. ▷ 提升题（选择题） ▷ （ ）1. Olivia asks Jam: "What's in ______ pencil case?" — "I have some crayons." A. you B. your C. yours D. you're ▷ （ ）2. — How many books do they have? — They have ______ books. A. a B. an C. two D. the ▷ （ ）3. Zhou Kai says: "I have four ______ in my bag." A. pencil B. a pencil C. pencils D. penciles ★ 拓展题（选择题） ★ （ ）1. The teacher asks: "What's in Bella's schoolbag?" — "______ has three books and a ruler." A. She B. Her C. Hers D. She's ★ （ ）2. Lily says: "I have ______ pencil and ______ eraser in my case." A. a; a B. a; an C. an; a D. an; an ★ （ ）3. Chen Wei asks: "How many crayons ______ Olivia have?" — "She has five." A. do B. does C. is D. are 考点8：I can help you with... 提供帮助 📌 I can help you with Chinese/English/maths 我能帮你学…… ◇ 基础题（选择题） ◇ （ ）1. I can help you ______ English. A. with B. for C. to D. at ◇ （ ）2. Olivia says: "I can help you ______ maths." A. for B. with C. to D. on ◇ （ ）3. — Can you help me? — Yes, I ______. A. can B. am C. do D. will ▷ 提升题（选择题） ▷ （ ）1. Bella is sad. Chen Wei says: "Don't worry. I ______ help you." A. can B. am C. do D. does ▷ （ ）2. The teacher says: "We can help ______ other in class." A. each B. every C. all D. one ▷ （ ）3. Jam says: "Lily helps me ______ my Chinese. She is kind." A. for B. to C. with D. at ★ 拓展题（选择题） ★ （ ）1. Olivia is good at English. She says: "I can help Jam ______ English." A. for B. to learn C. with learn D. learning ★ （ ）2. The teacher says: "You should help ______ when someone is in trouble." A. each other B. every other C. one other D. all other ★ （ ）3. Zhou Kai can't read the word. Bella says: "Let me ______ you." A. to help B. helping C. help D. helps 考点9：名词单复数变化规则 📌 book→books, pen→pens, ruler→rulers, crayon→crayons ◇ 基础题（选择题） ◇ （ ）1. I have two ______ in my bag. A. book B. books C. a book D. the book ◇ （ ）2. She has three ______ on her desk. A. ruler B. a ruler C. rulers D. rulerses ◇ （ ）3. How many ______ do you have? — Five. A. pencil B. pencils C. a pencil D. the pencil ▷ 提升题（选择题） ▷ （ ）1. Olivia has four ______ and two ______. A. eraser; pen B. erasers; pens C. erasers; pen D. eraser; pens ▷ （ ）2. The plural form of "crayon" is ______. A. crayons B. crayones C. crayon D. crayonz ▷ （ ）3. Jam counts his things: "One book, two books, three ______." A. book B. books C. bookes D. the book ★ 拓展题（选择题） ★ （ ）1. Bella says: "I have many ______ in my pencil case. Some are long, some are short." A. ruler B. rulers C. a ruler D. the ruler ★ （ ）2. The teacher asks: "What's the plural of 'pen'?" Chen Wei answers: "______." A. pens B. penes C. pen D. penss ★ （ ）3. Lily writes a list: "1 book, 2 ______, 3 erasers, 4 crayons." A. ruler B. rulers C. a ruler D. the rulers 考点10：综合运用：情景交际与句型辨析 📌 综合运用本单元所学句型进行真实情境交际 ◇ 基础题（选择题） ◇ （ ）1. Your friend says "I like maths." You like it too. You say: "______" A. I like maths too. B. You like maths too. C. I am maths too. D. Maths likes me too. ◇ （ ）2. Someone asks "Do you like music?" You don't like it. You say: "______" A. Yes, I do. B. No, I don't. C. No, I do. D. Yes, I don't. ◇ （ ）3. You want to say "Let's make a poster together." You say: "______" A. Let me make a poster together. B. Let's make a poster together. C. Let we make a poster together. D. Let's makes a poster together. ▷ 提升题（选择题） ▷ （ ）1. The teacher asks: "What subjects do you have today?" You answer: "______" A. I have a pencil. B. We have Chinese, English and maths. C. I like music. D. This is a book. ▷ （ ）2. Your friend says "Maths is hard." You want to help. You say: "______" A. I don't like maths. B. Maths is easy. C. I can help you with maths. D. You are not good. ▷ （ ）3. Olivia asks: "What's in your schoolbag, Chen Wei?" Chen Wei answers: "______" A. I am a student. B. I have books, a pencil case and a ruler. C. It's a desk. D. This is my bag. ★ 拓展题（选择题） ★ （ ）1. The teacher says: "Work in groups and make a poster about your favourite subject." Which sentence is correct on the poster? A. I like music. It makes me happy. B. I am music. It's fun. C. Music like me. It's good. D. Me like music. It's make me happy. ★ （ ）2. Bella writes in her diary: "Today I learned about subjects. I like Chinese because it's interesting. But I don't like maths ______ it's hard." A. and B. but C. or D. so ★ （ ）3. At the end of the lesson, the teacher says: "What did we learn today?" The best answer is: "______" A. We learned about animals. B. We learned about subjects and how to talk about what we like. C. We learned to play football. D. We learned to draw pictures only. 第三部分：参考答案速查表 ◇ 基础题（绿色） ▷ 提升题（橙色） ★ 拓展题（红色） 考点 基1 基2 基3 提1 提2 提3 拓1 拓2 拓3 考点1 B B B B C A B B C 考点2 B A A B A B B B B 考点3 A A B A A C B A C 考点4 A C B B A B A B A 考点5 B C A C A A B B B 考点6 A C C C B B B B C 考点7 C C B B C C A B B 考点8 A B A A A C B A C 考点9 B C B B A B B A B 考点10 A B B B C B A B B 第四部分：逐题详细解析 考点1：What's this? 句型及 It's a/an + 名词 回答 ◇ 基础题解析 基础1. ✅ B. It is 💡 What's this? 回答用 It's... 不用 This is... 基础2. ✅ B. It's 💡 What's this? 回答用 It's... 不用 This is... 基础3. ✅ B. an 💡 What's this? 回答用 It's... 不用 This is... ▷ 提升题解析 提升1. ✅ B. What's this 💡 What's this 是固定句型，中间缩写为 What's 提升2. ✅ C. It's 💡 What's this 是固定句型，中间缩写为 What's 提升3. ✅ A. this 💡 What's this 是固定句型，中间缩写为 What's ★ 拓展题解析 拓展1. ✅ B. this 💡 this/that 指代单件物品，注意 be 动词一致性 拓展2. ✅ B. What's 💡 this/that 指代单件物品，注意 be 动词一致性 拓展3. ✅ A. What's this 💡 this/that 指代单件物品，注意 be 动词一致性 考点2：a 用于辅音开头 / an 用于元音开头 ◇ 基础题解析 基础1. ✅ B. an 💡 an 符合 a/an 选择规则 基础2. ✅ A. a 💡 a 符合 a/an 选择规则 基础3. ✅ A. a 💡 a 符合 a/an 选择规则 ▷ 提升题解析 提升1. ✅ B. an 💡 English 以元音开头用 an，crayon 以辅音开头用 a 提升2. ✅ A. a 💡 English 以元音开头用 an，crayon 以辅音开头用 a 提升3. ✅ B. an 💡 English 以元音开头用 an，crayon 以辅音开头用 a ★ 拓展题解析 拓展1. ✅ B. an; a 💡 an 用于元音开头（orange/old/interesting） 拓展2. ✅ B. an 💡 an 用于元音开头（orange/old/interesting） 拓展3. ✅ B. an; a 💡 an 用于元音开头（orange/old/interesting） 考点3：I like Chinese/English/maths/PE 表达喜欢某学科 ◇ 基础题解析 基础1. ✅ A. I 💡 I like + 学科名词，描述用 It's + 形容词 基础2. ✅ A. Chinese 💡 I like + 学科名词，描述用 It's + 形容词 基础3. ✅ B. I do 💡 I like + 学科名词，描述用 It's + 形容词 ▷ 提升题解析 提升1. ✅ A. It 💡 It 指代前面的学科名词，三单用 does 提升2. ✅ A. beautiful 💡 It 指代前面的学科名词，三单用 does 提升3. ✅ C. does 💡 It 指代前面的学科名词，三单用 does ★ 拓展题解析 拓展1. ✅ B. but 💡 but 表示转折，because 表示原因 拓展2. ✅ A. because; because 💡 but 表示转折，because 表示原因 拓展3. ✅ C. don't 💡 but 表示转折，because 表示原因 考点4：Do you like...? Yes, I do. / No, I don't. ◇ 基础题解析 基础1. ✅ A. Yes 💡 Do you like...? 用 do/don't 回答 基础2. ✅ C. don't 💡 Do you like...? 用 do/don't 回答 基础3. ✅ B. No 💡 Do you like...? 用 do/don't 回答 ▷ 提升题解析 提升1. ✅ B. does 💡 Does 提问用 does 回答，三单用 does 提升2. ✅ A. don't 💡 Does 提问用 does 回答，三单用 does 提升3. ✅ B. Do 💡 Does 提问用 does 回答，三单用 does ★ 拓展题解析 拓展1. ✅ A. do 💡 doesn't like 三单否定，don't like 复数否定 拓展2. ✅ B. does 💡 doesn't like 三单否定，don't like 复数否定 拓展3. ✅ A. don't 💡 doesn't like 三单否定，don't like 复数否定 考点5：It's interesting/fun/hard/exciting 描述学科特点 ◇ 基础题解析 基础1. ✅ B. fun 💡 It's + 形容词 描述学科特点 基础2. ✅ C. hard 💡 It's + 形容词 描述学科特点 基础3. ✅ A. interesting 💡 It's + 形容词 描述学科特点 ▷ 提升题解析 提升1. ✅ C. happy 💡 makes me happy 让我开心，exciting 令人兴奋 提升2. ✅ A. exciting 💡 makes me happy 让我开心，exciting 令人兴奋 提升3. ✅ A. beautiful 💡 makes me happy 让我开心，exciting 令人兴奋 ★ 拓展题解析 拓展1. ✅ B. but 💡 but 连接两个转折意义的句子 拓展2. ✅ B. fun; interesting 💡 but 连接两个转折意义的句子 拓展3. ✅ B. but 💡 but 连接两个转折意义的句子 考点6：Let me draw/cut/write 让我做 / Let's make a poster 让我们一起做 ◇ 基础题解析 基础1. ✅ A. Let 💡 Let me + 动词原形，Let's = Let us + 动词原形 基础2. ✅ C. Let's 💡 Let me + 动词原形，Let's = Let us + 动词原形 基础3. ✅ C. cut 💡 Let me + 动词原形，Let's = Let us + 动词原形 ▷ 提升题解析 提升1. ✅ C. write 💡 Let's = Let us 后接动词原形 do 提升2. ✅ B. do 💡 Let's = Let us 后接动词原形 do 提升3. ✅ B. me 💡 Let's = Let us 后接动词原形 do ★ 拓展题解析 拓展1. ✅ B. me 💡 Drawing 动名词作主语，Let's + 动词原形 拓展2. ✅ B. Let's 💡 Drawing 动名词作主语，Let's + 动词原形 拓展3. ✅ C. Drawing 💡 Drawing 动名词作主语，Let's + 动词原形 考点7：What's in your pencil case? I have a/an... / How many... do you have? ◇ 基础题解析 基础1. ✅ C. have 💡 What's in...? 回答 I have... / How many + 复数 基础2. ✅ C. three 💡 What's in...? 回答 I have... / How many + 复数 基础3. ✅ B. an 💡 What's in...? 回答 I have... / How many + 复数 ▷ 提升题解析 提升1. ✅ B. your 💡 your 是形容词性物主代词后接名词，pencils 复数 提升2. ✅ C. two 💡 your 是形容词性物主代词后接名词，pencils 复数 提升3. ✅ C. pencils 💡 your 是形容词性物主代词后接名词，pencils 复数 ★ 拓展题解析 拓展1. ✅ A. She 💡 She 作主语，does 用于三单提问 拓展2. ✅ B. a; an 💡 She 作主语，does 用于三单提问 拓展3. ✅ B. does 💡 She 作主语，does 用于三单提问 考点8：I can help you with Chinese/English/maths 我能帮你学…… ◇ 基础题解析 基础1. ✅ A. with 💡 help sb. with sth. 帮某人学某科 基础2. ✅ B. with 💡 help sb. with sth. 帮某人学某科 基础3. ✅ A. can 💡 help sb. with sth. 帮某人学某科 ▷ 提升题解析 提升1. ✅ A. can 💡 help each other 互相帮助，固定搭配 提升2. ✅ A. each 💡 help each other 互相帮助，固定搭配 提升3. ✅ C. with 💡 help each other 互相帮助，固定搭配 ★ 拓展题解析 拓展1. ✅ B. to learn 💡 help with + 名词/动名词，each other 互相 拓展2. ✅ A. each other 💡 help with + 名词/动名词，each other 互相 拓展3. ✅ C. help 💡 help with + 名词/动名词，each other 互相 考点9：book→books, pen→pens, ruler→rulers, crayon→crayons ◇ 基础题解析 基础1. ✅ B. books 💡 名词复数规则：直接加 s 基础2. ✅ C. rulers 💡 名词复数规则：直接加 s 基础3. ✅ B. pencils 💡 名词复数规则：直接加 s ▷ 提升题解析 提升1. ✅ B. erasers; pens 💡 crayons 复数正确形式 提升2. ✅ A. crayons 💡 crayons 复数正确形式 提升3. ✅ B. books 💡 crayons 复数正确形式 ★ 拓展题解析 拓展1. ✅ B. rulers 💡 复数名词用 rulers/pencils，注意拼写 拓展2. ✅ A. pens 💡 复数名词用 rulers/pencils，注意拼写 拓展3. ✅ B. rulers 💡 复数名词用 rulers/pencils，注意拼写 考点10：综合运用本单元所学句型进行真实情境交际 ◇ 基础题解析 基础1. ✅ A. I like maths too. 💡 综合运用本单元句型 基础2. ✅ B. No, I don't. 💡 综合运用本单元句型 基础3. ✅ B. Let's make a poster together. 💡 综合运用本单元句型 ▷ 提升题解析 提升1. ✅ B. We have Chinese, English and maths. 💡 根据语境选择最合适的回答 提升2. ✅ C. I can help you with maths. 💡 根据语境选择最合适的回答 提升3. ✅ B. I have books, a pencil case and a ruler. 💡 根据语境选择最合适的回答 ★ 拓展题解析 拓展1. ✅ A. I like music. It makes me happy. 💡 综合判断语境与语法正确性 拓展2. ✅ B. but 💡 综合判断语境与语法正确性 拓展3. ✅ B. We learned about subjects and how to talk about what we like. 💡 综合判断语境与语法正确性 —— 北师大版（三起）三年级上册 Unit 3 Learning 专项训练 完 —— 学科网（北京）股份有限公司 $