Unit 5 The power of plants- Developing ideas 教学案 2026-2027学年外研版英语七年级上册

该初中英语导学案围绕Unit 5 "The power of plants"展开，聚焦植物用途及礼貌请求许可，通过听墨西哥玉米vlog获取关键信息，阅读植物多用途语篇，构建从玉米种植历史、文化意义到多用途描述的学习支架。 资料亮点在于融合听力阅读训练提升语言能力，融入墨西哥玉米文化培养文化意识，设计完形填空、任务型阅读等练习巩固知识点，助力学生学会用英语描述植物用途，提升思维品质与学习效率。

Class___________ Name______________ Number____________ 初一英语上学期教学案之45 Unit 5 The power of plants--- Developing ideas Ⅰ Made by: ______ Checked by: ______ Date: ______ 一、学习目标 1. 能听懂关于墨西哥玉米的 vlog，获取数字与事实等关键信息，并完成笔记。 2. 能读懂植物多种用途的语篇，学会用英语描述植物在生活中的用途。 二、重点短语 1.世界上三大粮食作物 the world’s top three food plants 2.用不同的方式 in different ways 3.例如 for example 4.在美洲 in the Americas 5.一根玉米 an ear of corn 6.开始种植玉米 start growing corn 7.大约九千年前 about 9,000 years ago 8.他们文化的重要组成部分 a big part of their culture 9.玉米菜肴 corn dishes 10.玉米种子 corn seeds 11.玉米须 corn silk 12.玉米穗 corn husks 13.对健康有益 be good for one’s health 14.用……制作…… make … with… 15.注意 pay attention to 16.请求许可 ask for permission 课外拓展（教材P85-86）: 1.听 vlog 的开头 listen to the opening of the vlog 2.完成笔记 complete the notes 3.听取数字 listen for numbers 4.甜玉米节 Sweet Corn Festival 5.给予许可 give permission 三、知识点讲解 1. Rice, wheat and corn are the world’s top three food plants. 稻米、小麦和玉米是世界上三大粮食作物。 (1)wheat [名词] 小麦，是不可数名词。 (2)top [形容词] 顶端的，最好的；top three 最好的三个。 2. People around the world eat them in different ways. 世界各地的人们用不同的方式食用它们。 (1)in different ways 用不同的方式，在句中作方式状语。 (2)around the world 全世界，相当于 all over the world。 3. For example, rice noodles in East Asia, bread in Europe and tacos in the Americas. 例如，东亚的米粉、欧洲的面包和美洲的墨西哥玉米卷。 (1)for example 例如，用来举例，可放在句首或句中。 (2)the Americas 美洲，指北美洲和南美洲。 4. The biggest one is nearly 50 cm long! 最大的一个将近 50 厘米长！ (1)nearly [副词] 将近，差不多，常放在数字前。 (2)表示长度用“数词 + 单位 + long”，如 50 cm long。 5. People started growing corn in Mexico about 9,000 years ago. 大约九千年前，人们开始在墨西哥种植玉米。 (1)start doing sth. 开始做某事，也可说 start to do sth.。 (2)about [副词] 大约，常放在数字前。 6. Today, it’s a big part of their culture. Corn isn’t just food. People even use it to make toys. 今天，它是他们文化的重要组成部分。玉米不仅仅是食物，人们甚至用它来做玩具。 (1)a part of… ……的一部分；play a part in… 在……中起作用。 (2)culture [名词] 文化；use sth. to do sth. 用某物做某事。 【课堂练习】根据单词的汉语意思或音标写出单词的适当形式 1. 文化 ___________ [ˈkʌltʃə] 2. 健康 ___________ [helθ] 3. 玫瑰 ___________ [rəʊz] 4. 棉花 ___________ [ˈkɒtn] 5. 竹子 ___________ [ˌbæmˈbuː] 6. 种子 ___________ [siːd] 7. 生长 ___________ [ɡrəʊ] 8. 部分 ___________ [pɑːt] 【课后练习】完形填空 Corn is one of the most important food plants in the world. People around the world eat it in different 1______. In Mexico, people use corn seeds to make tacos, and they also make chips 2______ corn. People started growing corn in Mexico about 9,000 years 3______. Today, corn is a 4______ part of Mexican culture. There are over 600 corn 5______ in the country. Corn isn’t just food. People even use it to make 6______ and other things. Corn has other uses, 7______. People make tea with corn silk, and it is good for their 8______. With corn husks, they can make beautiful 9______. Corn is so important 10______ us. Let’s learn more about the plants around us! 1. A. ways B. days C. names D. colours 2. A. at B. for C. with D. in 3. A. ago B. before C. after D. soon 4. A. small B. big C. short D. new 5. A. drinks B. seeds C. dishes D. dolls 6. A. toys B. tea C. bread D. paper 7. A. also B. too C. either D. yet 8. A. money B. health C. culture D. time 9. A. cakes B. chips C. dolls D. seeds 10. A. for B. to C. with D. of Class___________ Name______________ Number____________ 初一英语上学期教学案之46 Unit 5 The power of plants--- Developing ideas Ⅱ Made by: ______ Checked by: ______ Date: ______ 一、重点短语 1.请求许可 ask for permission 2.给予许可 give permission 3.礼貌地 in a polite way 4.用……做…… use … for… 5.看一看某物 have a look at sth. 6.问某人一个问题 ask sb. a question 7.去做吧；请便 go ahead 8.对……有益 be good for… 9.用玉米须泡茶 make tea with corn silk 10.玉米穗 corn husks 11.用玉米穗做玩偶 make dolls with corn husks 课外拓展（教材P87）: 1.成对练习 work in pairs 2.表演对话 act out a conversation 3.思考三种用途 think about three ways of using it 4.有用的表达 useful expressions 5.谈谈你学到的东西 talk about what you have learnt 二、知识点讲解 1. May I ask you a question? 我可以问你一个问题吗？ (1)May I…? 是请求许可的常用句型，比 Can I…? 更礼貌。 (2)ask sb. a question 问某人一个问题。 2. Could I have a look at your new bike? 我可以看看你的新自行车吗？ (1)Could I…? 也用来请求许可，语气委婉。 (2)have a look at sth. 看一看某物。 3. Asking for permission helps us get something in a polite way. 请求许可帮助我们礼貌地得到某物。 (1)ask for 请求，要求；ask sb. for sth. 向某人要某物。 (2)in a polite way 以一种礼貌的方式；be polite to sb. 对某人有礼貌。 4. People in many countries make tea with corn silk, and it is good for your health. 许多国家的人用玉米须泡茶，它对健康有益。 (1)make … with… 用……制作……，with 表示所用的材料。 (2)be good for… 对……有益；be good at… 擅长于……。 5. We make dolls with corn husks. 我们用玉米穗做玩偶。 (1)doll [名词] 玩偶，玩具娃娃。 (2)with corn husks 作方式状语，表示“用玉米穗”。 6. — May I use your ruler? — Certainly. People can reply Certainly, Sure or Go ahead. ——我可以用一下你的尺子吗？——当然可以。人们可以用“Certainly”“Sure”或“Go ahead”来回答。 (1)Certainly. / Sure. 都是同意对方请求时的回答。 (2)Go ahead. 意为“去吧；请便”，表示允许对方做某事。 【课堂练习】用所给词的适当形式填空 1. Corn is a big part of Mexican ___________ (culture). 2. People ___________ (grow) corn in Mexico about 9,000 years ago. 3. Corn silk is good for your ___________ (healthy). 4. We use corn seeds ___________ (make) chips. 5. There are many ___________ (use) of plants in our daily life. 6. Corn ___________ (be) not just food. People even use it to make toys. 7. With corn ___________ (husk), people can make beautiful dolls. 8. — May I ___________ (use) your pen? — Certainly. 【课后练习】任务型阅读 Plants are very important in our life. Do you know how people use them? Let me tell you. People use corn in many ways. In Mexico, they make tacos and chips with corn seeds. Corn silk can make tea, and it is good for our health. Corn husks can be made into beautiful dolls. (A) Plants give us not only food but also many useful things. We use cotton to make clothes, and we use bamboo to make baskets and paper. Roses are beautiful, and people use them to make perfume. When we want to use other people’s things, we should ask for permission in a polite way. We can say “May I…?” or “Could I…?”. People often reply “Certainly.” or “Go ahead.” (B) 植物在很多方面帮助我们。 Let’s take good care of the plants around us! 1. What do people use to make dolls? __________________________________________________________________________ 2. What can corn silk be used to make? __________________________________________________________________________ 3. What should we do before we use other people’s things? __________________________________________________________________________ 4. 请将文中(A)句翻译成汉语。 __________________________________________________________________________ 5. 请将文中(B)句翻译成英语。 __________________________________________________________________________ 学案45答案 【课堂练习】 1. culture 2. health 3. rose 4. cotton 5. bamboo 6. seed 7. grow 8. part 【课后练习】完形填空 1. A 2. C 3. A 4. B 5. C 6. A 7. B 8. B 9. C 10. B 学案46答案 【课堂练习】 1. culture 2. grew 3. health 4. to make 5. uses 6. is 7. husks 8. use 【课后练习】任务型阅读 1. Corn husks. / People use corn husks to make dolls. 2. Tea. / Corn silk can be used to make tea. 3. We should ask for permission (in a polite way). 4. 植物不仅给我们食物，还给我们许多有用的东西。 5. Plants help us in many ways. 学科网（北京）股份有限公司 $