Unit 4 What do we buy（期中知识清单）四年级英语上学期（沪教版·新教材）

知识清单·沪教版四年级上册 Unit 4 What do we buy? 知识梳理 知识点拨 【考点一】购物核心词汇与计量搭配 【考点二】价格询问与回答句型 【考点三】需求表达句型（would like/need） 【考点四】购物场景综合运用 考点一：购物核心词汇与计量搭配 本考点需掌握购物场景中物品计量短语（a bag of/a box of 等）的含义与正确搭配，能根据物品选择合适的计量方式，同时牢记 buy、sell、need 等核心动词的用法。 类别 词汇 含义 搭配示例 物品计量 a bag of 一袋 a bag of rice（一袋大米）、a bag of apples（一袋苹果） 物品计量 a box of 一盒 a box of eggs（一盒鸡蛋）、a box of tomatoes（一盒西红柿） 物品计量 a bottle of 一瓶 a bottle of juice（一瓶果汁）、a bottle of water（一瓶水） 物品计量 a bar of 一块 a bar of chocolate（一块巧克力） 购物动作 buy 买 buy food（买食物）、buy a kite（买风筝） 购物动作 sell 卖 sell milk（卖牛奶）、sell a cow（卖奶牛） 货币相关 how much 多少钱 How much is it?（它多少钱？） 货币相关 yuan 元（人民币单位） 15 yuan（15 元）、60 yuan（60 元） 需求表达 need 需要 need some bread（需要一些面包） 需求表达 would like 想要 I'd like a bar of chocolate（我想要一块巧克力） 【大显身手】 1、 单项选择题 ( )1.We need ______ eggs for breakfast. A. a bag of B. a box of C. a bottle of D. a bar of ( )2.My dad buys ______ rice from the supermarket. A. a box of B. a bottle of C. a bag of D. a bar of ( )3.-What do you want to buy?- I want ______ chocolate. A. a bar of B. a bag of C. a box of D. a bottle of ( )4.There is ______ juice in the fridge. Let's buy some more. A. a box of B. a bottle of C. a bag of D. a bar of ( )5.The shop ______ kites. We can buy one there. A. buys B. sells C. needs D. likes 二、根据中文提示补全短语 1.______（一袋苹果）is on the table. 2.She wants ______（一盒鸡蛋）for dinner. 3.My brother drinks ______（一瓶水）every day. 4.My mum buys ______（一块巧克力）for me as a gift. 5.We need ______（一袋大米）to make rice. 考点二：价格询问与回答句型 本考点需掌握 “How much...” 句型的两种形式（对应单数 / 复数物品），能正确使用 “It's...” 和 “They're...” 回答价格，同时熟练运用货币单位 “yuan”。 句型类型 结构 示例 需求询问 What would you like? -What would you like?（你想要什么？）-I'd like a bottle of juice.（我想要一瓶果汁。） 价格询问 How much is + 单数物品？ -How much is a bottle of water?（一瓶水多少钱？）-It's 2 yuan.（2 元。） 价格询问 How much are + 复数物品？ -How much are the eggs?（鸡蛋多少钱？）-They're 15 yuan.（15 元。） 需求表达 I need + 物品 I need a box of milk and a bag of rice.（我需要一盒牛奶和一袋大米。） 购物场景描述 主语 + buy/get + 物品 Chen Lei and his mum get bread and eggs.（陈雷和他妈妈买了面包和鸡蛋。） 【大显身手】 一、单项选择题 ( )1.-______ is the bread? -It's 12 yuan. A. What B. Where C. How much D. How many ( )2.-How much ______ the carrots? -They're 5 yuan. A. is B. are C. do D. does ( )3.-How much is a bottle of juice?-______ 8 yuan. A. It's B. They're C. This is D. These are ( )4.The apples are 12 yuan. ______ not expensive. A. It's B. They're C. This is D. That is ( )5.-______ is the chocolate?-It's 16 yuan. A. What colour B. How many C. How much D. Where 二、句型转换 1.The eggs are 15 yuan.（改为一般疑问句） ___________________________________________ 2.A bottle of water is 2 yuan.（对划线部分提问） ___________________________________________ 3.The carrots are 5 yuan.（改为否定句，保持价格不变） ___________________________________________ 4.How much is the bread?（用 “12 元” 回答） ___________________________________________ 5.The apples are 12 yuan.（用 “It's...” 改写，保持含义不变） ___________________________________________ 考点三：需求表达句型（would like/need） 本考点是购物场景中的高频实用句型，需达成 3 个核心目标： 1.熟练掌握 “What would you like?” 对 “想要物品” 的询问逻辑，能自然发起对话； 2.精准运用 “I'd like...” 回应需求，掌握缩写形式的书写与口语发音； 3.正确使用 “I need...” 表达 “必需物品”，清晰区分 “would like（想要，非必需）” 与 “need（需要，必需）” 的语义差异，避免场景误用。 维度 would like（想要） need（需要） 语义核心 表达 “意愿、喜好”，非必需 表达 “必需、刚需”，没有会影响生活 / 任务 语气 委婉、随意，可拒绝（例：No, thanks.） 直接、客观，通常不可拒绝（需满足） 常见场景 购物时选零食、饮料；点餐时选食物 购物时买生活必需品（米、蛋、油）；完成任务缺物品 句型变形 疑问句：What would...like?（无 “do” 辅助） 疑问句：Do/Does...need...?（需 “do/does” 辅助） 例句对比 -What would you like?-I'd like a cake.（你想要什么？我想要一块蛋糕。）（蛋糕是零食，非必需） -Do you need a cake?-Yes, we need one for the party.（你需要一块蛋糕吗？是的，我们派对需要一块。）（蛋糕是派对必需物品） 【大显身手】 1、 单项选择题 ( )1.-What ______ you like? -I'd like a bottle of juice. A. do B. would C. are D. is ( )2.We ______ some bread. Let's go to the shop. A. like B. would like C. need D. wants ( )3.-What would you like to buy? -______ a box of eggs. A. I like B. I need C. I'd like D. I want ( )4.My sister ______ a bar of chocolate. She loves sweet food. A. would like B. need C. likes D. buy ( )5.-Do you need some apples? -______. We have many at home. A. Yes, we do B. No, we don't C. Yes, we need D. No, we needn't 二、情景问答 1.A: What would you like to drink?（你想要一瓶果汁） B: _________________________________________________ 2.A: Do we need some rice?（我们需要一袋大米） B: _________________________________________________ 3.A: What would your brother like to eat?（他想要一块巧克力） B: _________________________________________________ 4.A: Do you need a box of eggs?（家里有很多，不需要） B: _________________________________________________ 5.A: What would you like to buy for the picnic?（我想要三瓶水和两个苹果） B: _________________________________________________ 考点四：购物场景综合运用 聚焦购物全流程（列清单→问价格→买物品→算总价），需实现 3 个目标： 用购物词汇（a bag of/a box of 等）和句型（How much.../I need...）串联完整场景； 能根据物品单价计算简单总价（整数加法）； 结合场景区分 “需要”（必需品，如米、蛋）和 “想要”（非必需品，如巧克力、风筝）。 （一）购物流程与语言匹配 购物步骤 核心动作 常用词汇 / 句型 示例 1. 列清单 明确 “需要” 的物品 need（需要）、shopping list（购物清单） We need bread and eggs. Let's write them on the shopping list.（我们需要面包和鸡蛋，把它们写在购物清单上。） 2. 问价格 确认物品单价 How much is/are...?（多少钱）、yuan（元） —How much are the apples?（苹果多少钱？）—They're 12 yuan.（12 元。） 3. 买物品 完成购买动作 buy（买）、get（拿 / 买） Dad buys a bag of carrots.（爸爸买了一袋胡萝卜。） 4. 算总价 计算总花费 数字 + plus + 数字 + equals...（加法） Eggs (15 yuan) plus bread (12 yuan) equals 27 yuan.（鸡蛋 15 元加面包 12 元，总共 27 元。） （二）“需要” vs “想要”—— 场景区分 类型 物品特点 场景判断 示例 需要（need） 生活必需，缺了会影响日常 清单上的物品（如米、蛋、面包） We need rice—we have no rice at home.（我们需要大米，家里没米了。） 想要（would like） 非必需，满足喜好 / 娱乐 清单外的物品（如巧克力、玩具） Chen Lei would like a bar of chocolate—it's not on the list.（陈雷想要一块巧克力，它不在清单上。） （三）简单总价计算（关键技能） 计算逻辑：所有购买物品的单价相加，得到总价； 示例：Buy bread (12 yuan) + eggs (15 yuan) + apples (12 yuan) = 39 yuan（面包 12 元 + 鸡蛋 15 元 + 苹果 12 元 = 39 元）； 语言表达：The total price is 39 yuan.（总价是 39 元。）/ All things cost 39 yuan.（所有东西共 39 元。） 易错点提醒 算总价时漏记物品：需逐一审视购买的物品，避免漏加（如漏算 “胡萝卜 5 元”）； 混淆 “需要” 和 “想要”：判断依据是 “是否必需”，而非 “是否喜欢”（例：“喜欢风筝” 不代表 “需要”，风筝是 “想要”）。 【大显身手】 1、 单项选择题 ( )1.Chen Lei's family have 60 yuan. They buy bread (12 yuan) and eggs (15 yuan). They still have ______ yuan. A. 33 B. 23 C. 48 D. 53 ( )2.We make a ______ before shopping, so we won't forget what to buy. A. list B. kite C. cake D. book ( )3.Farmer Thomas sells the cow to buy a dress, but Rosa is angry because ______. A. the dress is not beautiful B. they need the cow for milk C. the dress is too expensive D. they don't like dancing ( )4.-What do we buy in the supermarket?-We buy ______. A. a dress B. a kite C. a bag of rice D. a cow ( )5.When shopping, we should buy ______ first, not just things we want. A. things we need B. expensive things C. many things D. sweet things 二、根据场景补全短文 Chen Lei's family go shopping. They have 60 yuan and play a game. Mum and Chen Lei buy bread and a box of eggs. The bread is 12 yuan and the eggs are 15 yuan. Dad and Chen Wei buy a bag of apples (12 yuan) and a bag of carrots (5 yuan). The total price of the food is ______ yuan. They still have 16 yuan left. Chen Lei ______ a bar of chocolate. He wants to share it with his family. After shopping, they are very happy. 综合训练 一、单项选择题 ( )1.We can buy ______ in a supermarket. A. a dress B. a cow C. a bag of rice D. a dance ( )2.-How much ______ two bottles of milk? -They're 36 yuan. A. is B. are C. do D. does ( )3.-What would you like?-______ a bottle of juice. A. I need B. I like C. I'd like D. I buy ( )4.The shop ______ a box of eggs for 15 yuan. A. buys B. sells C. needs D. wants ( )5.We have 50 yuan. We buy apples (12 yuan) and carrots (5 yuan). We have ______ yuan left. A. 33 B. 43 C. 23 D. 57 二、根据括号内提示，补全句子 1.______（这盒鸡蛋多少钱）? -It's 15 yuan. 2.I ______（想要一块巧克力）. I can share it with my friends. 3.We need ______（三袋大米）and ______（两瓶果汁）for the party. 4.-How much are the apples? -______（它们 12 元）. 5.Chen Lei's family ______（买了面包和鸡蛋）from the supermarket. 三、从方框中选择合适的单词，补全短文（每词限用一次）buy sell need would like how much a bag of Today is Sunday. My family and I go to the supermarket. We ______ some food for dinner. My mum ______ to buy ______ rice and a box of eggs. My dad asks the shop assistant, “______ is the rice?” The assistant says, “It's 30 yuan.” We also ______ some apples. The supermarket doesn't ______ cows, so we can't buy one there. We are happy with our shopping. 四、按要求改写句子 1.The carrots are 5 yuan.（对划线部分提问） _____________________________________________ 2. I'd like a bottle of water.（改为一般疑问句） ______________________________________________ 3. We need some bread.（改为否定句） ______________________________________________ 4. How much is a bar of chocolate?（用 “16 元” 回答） ______________________________________________ 5.They buy a bag of apples and a bag of carrots.（对划线部分提问） _______________________________________________ 参考答案 考点一： 1、 单项选择题：1.B 2.C 3.A 4.B 5.B 二、根据中文提示补全短语： 1.A bag of apples 2. a box of eggs 3. a bottle of water 4. a bar of chocolate 5. a bag of rice 考点二： 1、 单项选择题：1.C 2.B 3.A 4.B 5.C 二、句型转换： 1.Are the eggs 15 yuan? 2.How much is a bottle of water? 3.The carrots aren't 5 yuan.（或 The carrots are not 5 yuan.） 4.It's 12 yuan. 5.It's 12 yuan for the apples.（或 The apples cost 12 yuan.） 考点三： 1、 单项选择题：1.B 2.C 3.C 4.A 5.B 二、情景问答： 1.I'd like a bottle of juice. 2.Yes, we do. We need a bag of rice. 3.He'd like a bar of chocolate. 4.No, we don't. We have many at home. 5.I'd like three bottles of water and two apples. 考点四： 一、单项选择题：1.A 2.A 3.B 4.C 5.A 二、根据场景补全短文：44；would like（或 wants） 【综合训练】 1、 单项选择题：1.C 2.B 3.C 4.B 5.A 二、根据括号内提示，补全句子： 1.How much is this box of eggs 2.would like a bar of chocolate（或 want a bar of chocolate） 3.three bags of rice；two bottles of juice 4.They're 12 yuan 5.buy bread and a box of eggs（或 bought bread and a box of eggs） 三、补全短文： need；would like；a bag of；How much；buy；sell 四、按要求改写句子： 1.How much are the carrots? 2.Would you like a bottle of water? 3.We don't need any bread. 4.It's 16 yuan. 5.What do they buy? 2 / 2 学科网（北京）股份有限公司 $