Unit 4 Let's Shop!单元知识总结及重点易错（专项训练）-2026-2027学年Join in 外研剑桥英语四年级上册

**基本信息** 聚焦购物主题，以10个重点易错考点为核心，通过基础-提升-拓展三级训练体系，系统强化价格询问、数字读写等语言能力，培养逻辑思维与实际应用能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |价格询问|9题|单复数区分（How much is/are及回答）|从单一名词到复数名词，结合a pair of单复数规则递进| |数字读写|9题|11-100构词规律（十几/几十/几十几）|从基础数字到复合数字，强化易混词拼写（forty/eighty）| |讨价还价|9题|Can I have it for...?句式及应答|从基础还价到情境应用，结合价格表达| |综合运用|9题|知识点融合（购物对话/阅读）|整合前9考点，提升实际语言运用与思维品质|

Join in 外研剑桥英语（三起）四年级上册 · Unit 4 Let's Shop! · 重点知识总结 & 易错专项训练 Join in 外研剑桥英语（三起）四年级上册 Unit 4 Let's Shop! 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（Words） 单词 & 中文 单词 & 中文 单词 & 中文 单词 & 中文 money 钱 yuan 元 toy 玩具 box 盒 bee 蜜蜂 pair 一双 carrot 胡萝卜 bakery 面包店 flower 花 noon 正午 skateboard 滑板 friend 朋友 holiday 假期 skateboarding 滑板运动 zookeeper 动物园饲养员 early 在早期 eleven 十一 twelve 十二 thirteen 十三 sixteen 十六 eighteen 十八 nineteen 十九 twenty 二十 thirty 三十 thirty-three 三十三 forty-three 四十三 forty-four 四十四 fifty 五十 sixty-six 六十六 seventy 七十 eighty 八十 hundred 一百 use 使用 give 给予 should 应当 share 共享 spend 花费 save 储蓄 wise 明智的 flea market 跳蚤市场 字母组合发音（Phonics） aw 发音 /ɔː/ 例词：draw 画, strawberry 草莓, law 法律 （aw固定发长元音/ɔː/） ew 发音 /juː/ 例词：new 新的, Dew 迪尤, few 少量 （ew常发/juː/，j为浊辅音） ow 发音 /aʊ/ 和 /əʊ/ 例词：cow 奶牛, how 怎样, brown 棕色 / snow 雪, know 知道, show 节目 （ow有双重发音！cow/how/brown→/aʊ/；snow/know/show→/əʊ/） 重点短语（Phrases） 1. go shopping —— 去购物 2. flea market —— 跳蚤市场 3. a pair of —— 一双/一对 4. by the way —— 顺便问一下 5. help people in need —— 帮助困难的人 6. work out —— 解决/算出 7. save it for holidays —— 为假日存钱 8. make good use of money —— 善用金钱 9. spend money —— 花钱 10. share money —— 分享钱/捐款 11. buy some flowers for sb —— 为某人买花 12. go skateboarding —— 去滑滑板 重点句型（Key Sentences） 句型 1 How much is the skateboard? — It's 80 yuan. → 这个滑板多少钱？——80元。 关键：How much is + 单数名词? 问单个物品价格。回答 It's + 数字 + yuan. is→It's. 句型 2 How much are three books? — They're 30 yuan. → 三本书多少钱？——30元。 关键：How much are + 复数名词? 问多个物品价格。回答 They're + 数字 + yuan. are→They're. 句型 3 Can I have it for 20 yuan? → 20元卖给我行吗？ 关键：讨价还价用语。Can I have it for + 价格? 请求以某价购买. 句型 4 They're 12 yuan for two. → 两个12元。 关键：for 表示'换/花费'。12 yuan for two = 两个12元. 数量+for+价格. 句型 5 I put 50 yuan in the spend box. → 我把50元放进消费盒。 关键：put...in... 把...放进... spend box 消费盒. 零花钱管理三分类之一. 句型 6 I save it for holidays. → 我把它存起来用于假期。 关键：save 储蓄/存钱. save...for... 为...存钱. holidays 假期. 句型 7 We should make good use of money. → 我们应该善用金钱。 关键：should 应当/应该. make good use of 善用/充分利用. 理财意识. 句型 8 Excuse me. How much is this kite? → 请问，这个风筝多少钱？ 关键：Excuse me 打扰了/请问. 购物时引起注意的礼貌用语. 重点语法（Grammar） 语法一：How much 询问价格（单复数区别） 单数：How much is the doll? — It's 13 yuan. （is→It's） 复数：How much are three books? — They're 30 yuan. （are→They're） 易错：How much is the apples? ❌ → How much are the apples? ✓ a pair of 作主语时看 pair 单复数：a pair is / two pairs are 语法二：数字 11-100 的读写 十几：eleven(11), twelve(12), thirteen(13), eighteen(18), nineteen(19) 几十：twenty(20), thirty(30), forty(40), fifty(50), sixty(60), seventy(70), eighty(80) 几十几：thirty-three(33), forty-four(44), sixty-six(66) 一百：hundred. 注意 forty 不是 fourty，eighteen 不是 eighty! 语法三：Can I have it for...? 讨价还价 Can I have it for + 价格? 我能以...价格买下它吗？ It's all I have. 我只有这些（钱）了. That's too much. 太贵了. How about 50? 50怎么样？ OK / Great! 表示接受. No, thanks. 表示拒绝. 语法四：零花钱管理 spend / save / share spend 花费/消费 → I put 50 yuan in the spend box. save 储蓄 → I save it for holidays. 为假期存钱. share 分享/捐赠 → I use this money to help people in need. should 应当 → We should make good use of money. 善用金钱. 语法五：名词单复数与 pair of 的用法 a pair of trousers 一条裤子（pair单数→is） two pairs of socks 两双袜子（pairs复数→are） How much is a pair of shoes? — It's 45 yuan. How much are three pairs of shorts? — They're 60 yuan. 专项训练 · 易错考点精练 Exercises · 10 Key Points（共90题） 考点一：How much is / are 询问价格（单复数区别） 📌 单数名词用 How much is...? 回答 It's + 价格。复数名词用 How much are...? 回答 They're + 价格。易错：名词单复数与 is/are 搭配错误。a pair of 看 pair 的单复数决定 be 动词。 ◇ 基础题（Basic） ( ) 1. — How much ______ the book? — It's 15 yuan. A. is B. are C. am ( ) 2. — How much ______ the apples? — They're 20 yuan. A. is B. are C. am ( ) 3. — How much is the pen? — ______ 5 yuan. A. It's B. They're C. Is it ▷ 提升题（Intermediate） ( ) 1. Which is CORRECT? A. How much is the books? B. How much are the books? C. How much are the book? ( ) 2. Olivia: 'How much ______ three pencils?' '______ 9 yuan.' A. is; It's B. are; They're C. are; It's ( ) 3. Chen Wei: 'How much ______ a pair of socks?' '______ 5 yuan.' A. is; It's B. are; They're C. is; They're ★ 拓展题（Advanced） ( ) 1. Lily: 'How much ______ two pairs of shoes?' '______ 90 yuan.' A. is; It's B. are; They're C. is; They're ( ) 2. Zhou Kai: '______ this toy car?' 'It's 25 yuan.' A. How many is B. How much are C. How much is ( ) 3. Bella: 'Mum, how much ______ all these flowers?' '______ 60 yuan in total.' A. is; It's B. are; They're C. are; It's — — — — — — — — — — — — 考点二：数字 11-100 的认读与书写 📌 十几：eleven, twelve, thirteen, eighteen, nineteen。几十：twenty, thirty, forty, fifty, sixty, seventy, eighty。几十几：thirty-three, forty-four, sixty-six。一百：hundred。易错：forty不是fourty，eighteen不是eighty。 ◇ 基础题（Basic） ( ) 1. 20 + 30 = ______ A. fourty B. fifty C. fifteen ( ) 2. Which is 70? A. seventeen B. seventy C. seven ( ) 3. 44 in English is ______. A. fourty-four B. forty-four C. fourteen-four ▷ 提升题（Intermediate） ( ) 1. Which number is 'eighteen'? A. 80 B. 18 C. 8 ( ) 2. Chen Wei: 'I have ______ yuan. That's 33 + 33.' A. sixty-six B. sixty-six C. sixty six ( ) 3. Olivia: 'The skateboard is ______ yuan. It's 80.' A. eight B. eighteen C. eighty ★ 拓展题（Advanced） ( ) 1. Lily: 'I count: 11, 12, 13... What comes after nineteen?' A. tenth B. twenty C. twelve ( ) 2. Zhang Hao: 'Mum gives me 100 yuan. 100 is ______.' A. a hundred B. a hundred C. hundred ( ) 3. Bella: 'Which is the SMALLEST number?' A. thirteen B. eleven C. sixteen — — — — — — — — — — — — 考点三：a pair of 的用法与 be 动词搭配 📌 a pair of + 复数名词（trousers/socks/shoes/shorts）表示一双/一条。a pair 单数 → be 动词用 is。two pairs 复数 → be 动词用 are。How much is a pair of...? They're + 价格（口语中常用复数回答）。 ◇ 基础题（Basic） ( ) 1. I want to buy ______ new shoes. A. a pair of B. a pair C. pair of ( ) 2. How much is ______ trousers? A. a pair of B. pair of C. two pair of ( ) 3. A pair of socks ______ 5 yuan. A. are B. is C. am ▷ 提升题（Intermediate） ( ) 1. Which is CORRECT? A. two pair of shoes B. two pairs of shoes C. a pairs of shoes ( ) 2. Olivia: 'How much ______ two pairs of shorts?' '______ 32 yuan.' A. is; It's B. are; They're C. are; It's ( ) 3. Chen Wei: 'I buy ______ for my dad. It's 100 yuan.' A. a pair of trousers B. a trousers C. two trouser ★ 拓展题（Advanced） ( ) 1. Lily: 'Mum, I need ______ socks. How much are they?' 'Six yuan for one pair.' A. a pair of B. two pairs of C. a socks ( ) 2. Zhou Kai: 'A pair of shoes ______ 45 pounds. Two pairs of shoes ______ 90 pounds.' A. is; are B. are; is C. is; is ( ) 3. Bella: 'Excuse me, how much is ______?' 'It's 28 pounds.' A. these trousers B. a pair of trousers C. two pairs of trousers — — — — — — — — — — — — 考点四：Can I have it for + 价格? 讨价还价 📌 Can I have it for 20 yuan? 我能以20元买下它吗？（还价）It's all I have. 我只有这些钱。Seventy. 七十（元）。That's too much. 太贵了。How about...? ...怎么样？接受：OK / Great! 拒绝：No, thanks. ◇ 基础题（Basic） ( ) 1. — Can I have it for 10 yuan? — ______. It's 15 yuan. A. OK B. No, thanks C. Great ( ) 2. — Can I have it for 20 yuan? — Great! ______ you are. A. Here B. There C. Where ( ) 3. Dad: 'I can buy it for you.' Son: '______, Dad. I can work it out.' A. Yes, please B. No, thanks C. Here you are ▷ 提升题（Intermediate） ( ) 1. Which is a bargaining sentence? A. How much is it? B. Can I have it for 30 yuan? C. It's 50 yuan. ( ) 2. Olivia: 'The toy is 80 yuan. I only have 50.' She says: '______' A. It's too cheap. B. Can I have it for 50 yuan? C. How much is it? ( ) 3. Chen Wei: 'Seventy. Look, it's a new one.' The customer: '______' A. It's all I have. B. Here you are. C. How much is it? ★ 拓展题（Advanced） ( ) 1. Lily: 'The kite is 12 yuan for one. 20 yuan for two.' Zhang Hao wants two. He says: '______' A. They're 12 yuan. B. Great! 20 yuan. Here you are. C. How much is one? ( ) 2. Zhou Kai: 'I like this skateboard. It's 80 yuan. I have 70.' What does he say first? A. Can I have it for 70 yuan? B. It's too cheap. C. Here is 80 yuan. ( ) 3. Bella: 'The seller says no to 20 yuan. The price stays 25.' Bella's last try: A. Can I have it for 22 yuan? B. Here you are. C. It's all I have. — — — — — — — — — — — — 考点五：spend / save / share 零花钱三分类 📌 spend box 消费盒（买学习用品等）。save box 储蓄盒（为假期存钱）。share box 分享盒（帮助有困难的人）。should 应当 → We should make good use of money. 善用金钱。use...to... 用...来做...。 ◇ 基础题（Basic） ( ) 1. I put 50 yuan in the ______ box. I use it to buy school things. A. save B. spend C. share ( ) 2. I put 30 yuan in the ______ box. I save it for holidays. A. spend B. share C. save ( ) 3. Nana puts 20 yuan in the share box. She uses it to ______ people in need. A. spend B. help C. save ▷ 提升题（Intermediate） ( ) 1. Which is CORRECT about the three boxes? A. Spend—save money B. Save—buy school things C. Share—help people in need ( ) 2. Olivia: 'We ______ make good use of money.' A. should B. can C. is ( ) 3. Chen Wei: 'I use this money ______ help my friend.' A. for B. to C. at ★ 拓展题（Advanced） ( ) 1. Lily: 'Mum gives me 100 yuan. I put 40 in spend, 35 in save, and 25 in share.' How much for holidays? A. 40 yuan B. 35 yuan C. 25 yuan ( ) 2. Zhou Kai: 'Which box should I use to buy a birthday gift for my mum?' A. Save box B. Share box C. Spend box ( ) 3. Bella: 'Busy like a bee! I ______ money every month for my holiday.' A. spend B. save C. share — — — — — — — — — — — — 考点六：Excuse me / Here you are / By the way 交际用语 📌 Excuse me 打扰了/请问（引起注意或礼貌插话）。Here you are 给你（递东西时）。By the way 顺便问一下/顺便说一下。Thank you / Thanks 感谢。No, thanks 不用了谢谢。 ◇ 基础题（Basic） ( ) 1. You want to ask a shopkeeper a question. You say: '______, how much is this?' A. Sorry B. Excuse me C. Goodbye ( ) 2. The seller gives you the toy. She says: '______' A. Excuse me B. Thank you C. Here you are ( ) 3. ______, do you want to go skateboarding with me? A. Excuse me B. By the way C. Here you are ▷ 提升题（Intermediate） ( ) 1. Which is the BEST response to 'Here you are.'? A. Excuse me. B. By the way. C. Thank you. ( ) 2. Olivia: 'I want to ask a stranger about the time.' She says: '______' A. Here you are. B. Excuse me. C. By the way. ( ) 3. Chen Wei: 'I almost forgot. ______, do you like my new skateboard?' A. Excuse me B. By the way C. Here you are ★ 拓展题（Advanced） ( ) 1. Lily: 'Mum, can I go shopping?' Mum: 'OK. ______, don't spend too much!' A. Excuse me B. By the way C. Here you are ( ) 2. Zhang Hao buys a kite. The seller says '20 yuan. ______' Zhang Hao gives money and says 'Thank you.' A. Excuse me B. By the way C. Here you are ( ) 3. Bella: '______, is there a bakery near here?' The man: 'Yes, just over there.' A. Excuse me B. By the way C. Here you are — — — — — — — — — — — — 考点七：字母组合 aw / ew / ow 发音规则 📌 aw 固定发 /ɔː/：draw, strawberry, law。ew 常发 /juː/：new, few, Dew。ow 双重发音：cow/how/brown 发 /aʊ/；snow/know/show 发 /əʊ/。易错：ow 两种发音需根据单词判断。 ◇ 基础题（Basic） ( ) 1. Which word has the /ɔː/ sound? A. draw B. new C. cow ( ) 2. The 'ew' in 'new' sounds like ______. A. /aʊ/ B. /juː/ C. /ɔː/ ( ) 3. Which word has the SAME sound as 'cow'? A. snow B. know C. how ▷ 提升题（Intermediate） ( ) 1. Which group has DIFFERENT sounds? A. cow, how, brown B. snow, know, show C. cow, snow, how ( ) 2. Olivia: 'I ______ a strawberry on the paper.' Which 'aw' word fits? A. know B. draw C. show ( ) 3. Chen Wei: 'I have a ______ new toys.' Which 'ew' word fits? A. few B. cow C. draw ★ 拓展题（Advanced） ( ) 1. Lily: 'Circle the word with a DIFFERENT sound: brown, cow, snow, how.' A. brown B. cow C. snow ( ) 2. Zhou Kai: 'The girl ______ a flower. All three words have 'aw'. Which fits?' A. knows B. draws C. shows ( ) 3. Bella: 'Which word does NOT have the /əʊ/ sound?' A. snow B. know C. cow — — — — — — — — — — — — 考点八：for 的用法（for + 价格 / for + 人） 📌 for + 价格：表示'换/花费'。12 yuan for one kite. 20 yuan for two. for + 人：表示为某人。buy some flowers for my mum. 易错：for 和 to 的混淆。give...to... 给某人。buy...for... 为某人买。 ◇ 基础题（Basic） ( ) 1. Twelve yuan ______ one kite. Twenty yuan for two. A. for B. to C. at ( ) 2. I want to buy a cake ______ my mum. A. to B. for C. at ( ) 3. Fifty bananas ______ 100 yuan. A. to B. for C. at ▷ 提升题（Intermediate） ( ) 1. Which is CORRECT? A. I give the book for him. B. I give the book to him. C. I buy a book to him. ( ) 2. Olivia: 'I'd like to buy some flowers ______ my grandma.' A. to B. for C. at ( ) 3. Chen Wei: 'Forty-four carrots ______ 88 yuan.' That's ______ 2 yuan each. A. for; for B. to; to C. for; to ★ 拓展题（Advanced） ( ) 1. Lily: 'I make 27 yuan. I want to give it ______ the charity.' A. for B. to C. at ( ) 2. Zhou Kai: 'The bookshop has books. 5 pounds ______ one book. 8 pounds ______ two.' A. to; to B. for; for C. at; at ( ) 3. Bella: 'Dad, I'd like to buy a skateboard ______ my best friend. It's 70 yuan ______ him.' A. for; for B. to; for C. for; to — — — — — — — — — — — — 考点九：go shopping / go skateboarding 去式短语 📌 go + doing 表示去做某事。go shopping 去购物。go skateboarding 去滑滑板。go fishing 去钓鱼。go boating 去划船。注意 go + 动词-ing 形式。let's go shopping! 我们去购物吧！ ◇ 基础题（Basic） ( ) 1. Let's ______ shopping! I need a new pen. A. go B. goes C. going ( ) 2. Tutu wants to ______ skateboarding with his new skateboard. A. go B. goes C. going ( ) 3. On Sunday I often ______ shopping with my mum. A. go B. goes C. going ▷ 提升题（Intermediate） ( ) 1. Which is CORRECT? A. He go shopping. B. He goes shopping. C. He going shopping. ( ) 2. Olivia: 'In the afternoon we can ______ skateboarding together!' A. go B. goes C. to go ( ) 3. Chen Wei: 'My sister ______ shopping every Saturday.' A. go B. goes C. going ★ 拓展题（Advanced） ( ) 1. Lily: 'What do you usually do on weekends?' 'I usually ______ shopping or ______ fishing.' A. go; go B. goes; goes C. go; goes ( ) 2. Zhou Kai: 'Let's ______ skateboarding and then ______ shopping!' A. go; go B. goes; go C. go; goes ( ) 3. Bella: 'My family ______ shopping in Xiamen every summer.' A. go B. goes C. going — — — — — — — — — — — — 考点十：综合运用——情境对话与阅读理解 📌 综合运用以上所有知识点，在真实对话和短文中判断正确表达，理解大意，选择正确答案。体现 Unit 4 Let's Shop! 单元主题（购物、价格、理财）。 ◇ 基础题（Basic） ( ) 1. Read: 'I'm Chen Wei. I go to the flea market. I see a toy car. It's 25 yuan. I buy it.' How much is the toy car? A. 15 yuan B. 25 yuan C. 35 yuan ( ) 2. Olivia: 'I have 50 yuan. I want to buy a book for 30 yuan and a pen for 12 yuan.' How much does she spend? A. 30 yuan B. 42 yuan C. 50 yuan ( ) 3. Which sentence is about SAVING money? A. I buy a cake. B. I save it for holidays. C. I give it to my friend. ▷ 提升题（Intermediate） ( ) 1. Read the dialogue: Shopkeeper: 'How much is the basketball?' Boy: 'It's 10 yuan.' Shopkeeper: 'Can I have it for 5 yuan?' Boy: 'No, thanks. It's all I have.' Who is buying? A. The shopkeeper B. The boy C. No one ( ) 2. Lily: 'Mum gives me 80 yuan. I put 40 in spend, 25 in save, and 15 in share.' Where does the holiday money go? A. Spend box B. Save box C. Share box ( ) 3. Zhang Hao: 'At the flea market I sell my old toys. I make 35 yuan. Now I can buy a new kite for 20 yuan.' How much money does he have LEFT? A. 15 yuan B. 20 yuan C. 35 yuan ★ 拓展题（Advanced） ( ) 1. Read the passage: Bella lives in Kunming. She goes to the flea market with 20 yuan. She sees a beautiful kite. 'How much is it?' '12 yuan for one. 20 yuan for two.' Bella buys TWO kites. She gives 20 yuan. How much does each kite cost? A. 10 yuan B. 12 yuan C. 20 yuan ( ) 2. Read about Nana: 'Mum gives me 100 yuan. I put 50 in spend, 30 in save, 20 in share. I buy school things with spend money. I save for a holiday in Jinan. I help a friend with share money.' What is the share money for? A. Buying school things B. Saving for holiday C. Helping a friend ( ) 3. Zhou Kai writes: 'My plan: I get 60 yuan a month. I put 30 in spend (for books and pens), 20 in save (for a new skateboard), 10 in share (for charity). After three months, how much do I save for the skateboard?' A. 30 yuan B. 60 yuan C. 90 yuan 参考答案与详细解析 1. 考点一：How much is / are 询问价格（单复数区别） ◇ 基础题答案： 1.A 2.B 3.A ▷ 提升题答案： 1.B 2.B 3.A ★ 拓展题答案： 1.B 2.C 3.B 详细解析 基础题 1【答案 A】 the book 单数 → How much is. 回答 It's. are 用于复数，am 用于 I. 基础题 2【答案 B】 the apples 复数 → How much are. 回答 They're. is 用于单数不对。 基础题 3【答案 A】 the pen 单数 → 回答 It's 5 yuan. They're 用于复数，Is it 是疑问句。 提升题 1【答案 B】 the books 复数 → are. A 中 is+复数错，C 中 are+单数错。B 正确。 提升题 2【答案 B】 three pencils 复数 → are. 回答 They're. 复数对应复数。 提升题 3【答案 A】 a pair 单数 → is. 回答 It's. pair 是单数概念（一双看作一个整体）。 拓展题 1【答案 B】 two pairs 复数 → are. 回答 They're. pairs 复数对应 They're. 拓展题 2【答案 C】 this toy car 单数 → How much is. A 中 How many 问数量不对，B 中 are+单数错。 拓展题 3【答案 B】 all these flowers 复数 → are. 回答 They're. 多个物品用复数。 2. 考点二：数字 11-100 的认读与书写 ◇ 基础题答案： 1.B 2.B 3.B ▷ 提升题答案： 1.B 2.A 3.C ★ 拓展题答案： 1.B 2.A 3.B 详细解析 基础题 1【答案 B】 20+30=50 → fifty. A 拼写错（应为forty），C fifteen是15。 基础题 2【答案 B】 seventy 七十. A seventeen 十七，C seven 七。 基础题 3【答案 B】 44 = forty-four. A 拼写错（forty不是fourty），C 格式错。 提升题 1【答案 B】 eighteen 十八(18). A eighty 八十，C eight 八。 提升题 2【答案 A】 33+33=66 → sixty-six（带连字符）. B 拼写对但A也对需看选项。A 和B一样选A。 提升题 3【答案 C】 80 → eighty. A eight 八，B eighteen 十八。 拓展题 1【答案 B】 19之后是20 → twenty. A tenth 第十（序数词），C twelve 十二在eleven后面。 拓展题 2【答案 A】 100 = a hundred / one hundred. 需要冠词 a 或 one. A 和B一样选A。 拓展题 3【答案 B】 eleven 11 < thirteen 13 < sixteen 16. 最小的是 eleven. B 正确。 3. 考点三：a pair of 的用法与 be 动词搭配 ◇ 基础题答案： 1.A 2.A 3.B ▷ 提升题答案： 1.B 2.B 3.A ★ 拓展题答案： 1.B 2.A 3.B 详细解析 基础题 1【答案 A】 a pair of + 复数名词. 完整搭配 a pair of shoes. B 缺 of，C 缺 a. 基础题 2【答案 A】 trousers 裤子（复数）→ a pair of trousers. B 缺 a，C 应为 two pairs of. 基础题 3【答案 B】 a pair 单数 → is. 把一双看作一个整体. are 用于复数 pairs. 提升题 1【答案 B】 两双 → two pairs of. A 中 pair 没加s，C 中 a+pairs 矛盾。B 正确。 提升题 2【答案 B】 two pairs 复数 → are. 回答 They're. 复数对应复数。 提升题 3【答案 A】 trousers 必须加 a pair of. B 缺 pair of，C trouser 不加s且 two+trouser 不对。A 正确。 拓展题 1【答案 B】 they 复数代词 → 需要两双 → two pairs of socks. A 一双与 they 不符。 拓展题 2【答案 A】 a pair 单数 → is. two pairs 复数 → are. A 正确。 拓展题 3【答案 B】 is 单数 → a pair of trousers 单数. A 复数用 are，C 复数用 are. 4. 考点四：Can I have it for + 价格? 讨价还价 ◇ 基础题答案： 1.B 2.A 3.B ▷ 提升题答案： 1.B 2.B 3.A ★ 拓展题答案： 1.B 2.A 3.A 详细解析 基础题 1【答案 B】 卖家说 It's 15 yuan（不低于10）→ 拒绝 → No, thanks. OK 和 Great 都是接受。 基础题 2【答案 A】 Here you are. 给你（递东西时的常用语）. Great 表示接受20元的价格。 基础题 3【答案 B】 儿子想自己解决 → 拒绝帮助 → No, thanks, Dad. work it out 解决/算出。 提升题 1【答案 B】 还价 = Can I have it for + 价格. A 是问价格，C 是报价格。B 正确。 提升题 2【答案 B】 只有50元 → 还价 → Can I have it for 50 yuan? A too cheap 太便宜不对，C 问价格已知道。 提升题 3【答案 A】 It's all I have. 我只有这些（钱）了. 顾客表示只有某个金额。B 是卖家说的，C 已知价格。 拓展题 1【答案 B】 20元两个 → 接受价格 → Great! 20 yuan. Here you are. 递钱. B 正确。 拓展题 2【答案 A】 有70想还价到70 → Can I have it for 70 yuan? 先还价. A 正确。 拓展题 3【答案 A】 卖家拒绝20，价格仍是25 → 再还一次 → Can I have it for 22? 继续讨价还价. A 合理。 5. 考点五：spend / save / share 零花钱三分类 ◇ 基础题答案： 1.B 2.C 3.B ▷ 提升题答案： 1.C 2.A 3.B ★ 拓展题答案： 1.B 2.C 3.B 详细解析 基础题 1【答案 B】 买学习用品 → spend box 消费盒. save 是存钱，share 是分享。 基础题 2【答案 C】 为假期存钱 → save box 储蓄盒. spend 消费，share 分享。 基础题 3【答案 B】 share box → help people in need 帮助有困难的人. spend 花费，save 储蓄。 提升题 1【答案 C】 Share 分享 → help people in need. A spend应是花钱，B save应是存钱。C 正确。 提升题 2【答案 A】 should 应当/应该. make good use of 善用. should + 动词原形. B can 能（语气不对），C is 语法错。 提升题 3【答案 B】 use...to... 用...来做... use this money to help 用这钱来帮助. B 正确。 拓展题 1【答案 B】 save box 为假期存钱 → 35 yuan. spend 40 是消费，share 25 是分享。 拓展题 2【答案 C】 给妈妈买生日礼物 → 消费 → spend box. save 存钱不花，share 帮助他人。 拓展题 3【答案 B】 为假期 → save 储蓄/存钱. spend 是花掉，share 是分享。B 正确。 6. 考点六：Excuse me / Here you are / By the way 交际用语 ◇ 基础题答案： 1.B 2.C 3.B ▷ 提升题答案： 1.C 2.B 3.B ★ 拓展题答案： 1.B 2.C 3.A 详细解析 基础题 1【答案 B】 引起注意/礼貌提问 → Excuse me. Sorry 是道歉，Goodbye 是再见。 基础题 2【答案 C】 递东西 → Here you are 给你. Excuse me 是提问用，Thank you 是感谢。 基础题 3【答案 B】 顺便问一下 → By the way. Excuse me 是引起注意，Here you are 是递东西。 提升题 1【答案 C】 别人给你东西 → Thank you 感谢. Excuse me 和 By the way 都不回应感谢。 提升题 2【答案 B】 向陌生人提问 → Excuse me 打扰了/请问. Here you are 递东西，By the way 顺便说。 提升题 3【答案 B】 差点忘了，顺便一提 → By the way. Excuse me 是引起注意，Here you are 递东西。 拓展题 1【答案 B】 顺便提醒 → By the way, don't spend too much! 顺便说别花太多. B 正确。 拓展题 2【答案 C】 卖家收钱后递风筝 → Here you are 给你. A 和 B 都不适合交易完成时。 拓展题 3【答案 A】 向路人问路 → Excuse me 请问/打扰了. By the way 是熟人之间顺便说。 7. 考点七：字母组合 aw / ew / ow 发音规则 ◇ 基础题答案： 1.A 2.B 3.C ▷ 提升题答案： 1.C 2.B 3.A ★ 拓展题答案： 1.C 2.B 3.C 详细解析 基础题 1【答案 A】 aw 发 /ɔː/ → draw. new 发 /juː/，cow 发 /aʊ/. 基础题 2【答案 B】 ew → /juː/（如 new, few, Dew）. /aʊ/ 是 ow 在 cow 中的发音。 基础题 3【答案 C】 cow 发 /aʊ/. how 也发 /aʊ/. snow 和 know 发 /əʊ/. C 正确。 提升题 1【答案 C】 A 都发 /aʊ/，B 都发 /əʊ/. C 中 cow/how 发/aʊ/但 snow 发/əʊ/ → 不同. C 正确。 提升题 2【答案 B】 draw 画（含 aw 发/ɔː/）. know 和 show 含 ow 发/əʊ/不是aw组合。 提升题 3【答案 A】 few 少量（含 ew 发/juː/）. cow 含 ow，draw 含 aw. A 正确。 拓展题 1【答案 C】 brown/cow/how 都发 /aʊ/. snow 发 /əʊ/ → 不同. C 正确。 拓展题 2【答案 B】 draws 画（aw 发/ɔː/）. knows 和 shows 含 ow 发/əʊ/. B 正确。 拓展题 3【答案 C】 snow 和 know 发 /əʊ/. cow 发 /aʊ/ → 不同. C 正确。 8. 考点八：for 的用法（for + 价格 / for + 人） ◇ 基础题答案： 1.A 2.B 3.B ▷ 提升题答案： 1.B 2.B 3.A ★ 拓展题答案： 1.B 2.B 3.A 详细解析 基础题 1【答案 A】 for + 价格 → 12 yuan for one kite. to 和 at 不表示'换/花费'。 基础题 2【答案 B】 buy...for sb 为某人买... buy a cake for my mum. to 用在 give...to... 中。 基础题 3【答案 B】 for 表示花费/交换 → 50 bananas for 100 yuan. 课本原句。 提升题 1【答案 B】 give...to... 给某人. A 应为 to，C 应为 buy...for... B 正确。 提升题 2【答案 B】 buy...for sb → buy flowers for my grandma. for 表示为某人买。 提升题 3【答案 A】 44 carrots for 88 yuan. for 2 yuan each. 两个都用 for 表示价格. A 正确。 拓展题 1【答案 B】 give...to... 把...给... give it to the charity. to 后接人/机构。 拓展题 2【答案 B】 for + 价格 → 5 pounds for one book. 8 pounds for two. 都用 for. 拓展题 3【答案 A】 buy...for sb → for my friend. 70 yuan for him → for + 人表示'对他来说/为他'. A 正确。 9. 考点九：go shopping / go skateboarding 去式短语 ◇ 基础题答案： 1.A 2.A 3.A ▷ 提升题答案： 1.B 2.A 3.B ★ 拓展题答案： 1.A 2.A 3.B 详细解析 基础题 1【答案 A】 Let's + 动词原形 → Let's go shopping! go shopping 去购物。 基础题 2【答案 A】 go skateboarding 去滑滑板. want to + 动词原形 → go. B 三单形式不对。 基础题 3【答案 A】 I 第一人称 → go shopping. goes 用于三单（he/she），going 需 be 动词。 提升题 1【答案 B】 He 三单 → goes shopping. A 缺es，C 缺is. B 正确。 提升题 2【答案 A】 can + 动词原形 → go skateboarding. goes 三单不对，to go 不定式不对。 提升题 3【答案 B】 My sister 三单 → goes shopping. go 原形不对，going 需 is. B 正确。 拓展题 1【答案 A】 I 第一人称 → go shopping, go fishing. 两个都用原形. A 正确。 拓展题 2【答案 A】 Let's + 原形 go. and 连接两个并列 → go skateboarding and go shopping. A 正确。 拓展题 3【答案 B】 My family 看作整体三单 → goes shopping. 类似 My family likes... A 原形不对。 10. 考点十：综合运用——情境对话与阅读理解 ◇ 基础题答案： 1.B 2.B 3.B ▷ 提升题答案： 1.A 2.B 3.A ★ 拓展题答案： 1.A 2.C 3.B 详细解析 基础题 1【答案 B】 It's 25 yuan. 玩具车25元. A 和 C 都没提到。 基础题 2【答案 B】 30 + 12 = 42 yuan. A 只有书，C 是她拥有的钱. B 正确。 基础题 3【答案 B】 save it for holidays 为假期存钱 → 储蓄. A 是消费，C 是给予。 提升题 1【答案 A】 Can I have it for 5 yuan? 是 shopkeeper 在还价想买. The boy 是卖家. A 正确。 提升题 2【答案 B】 为假期存钱 → save box → 25 yuan. spend 是消费，share 是分享。 提升题 3【答案 A】 赚了35，花了20买风筝 → 35-20 = 15 yuan left. A 正确。 拓展题 1【答案 A】 20 yuan for two → 两个20元 → 每个 10 yuan. A 正确。 拓展题 2【答案 C】 share money → help a friend / help people in need. A 是 spend，B 是 save. C 正确。 拓展题 3【答案 B】 每月存20 → 3个月 → 20×3 = 60 yuan for the skateboard. B 正确。 — 第 页 — 学科网（北京）股份有限公司 $