人教版（2019）高中英语选择性必修第二册 Unit3 Food and Culture Using Language(2) 名师教学设计

Unit 3 Period Ⅴ Using Language(2)名师教学设计
课时内容
Write about a healthy diet
主题语境：人与社会
主题群：历史、社会与文化
子主题：饮食与文化
语篇类型：说明文
文本分析：
[What]“Healthy Eating”是一篇科普说明文，从五个方面介绍了健康饮食：糖是健康的杀手，减少糖的摄入量是保持健康的关键，均衡膳食，养成细嚼慢咽的习惯，形成健康的饮食观点。文章主题与本单元主题语境相关，有助于对主题意义的探究。文本结构清晰，逻辑条理分明，能够为写作提供很好的范本。
[Why]作者从不同方面阐释了健康饮食，帮助学生积累有关健康饮食的知识，深化对健康饮食这一主题的理解，并反思自身的饮食习惯。
[How]该文是一篇说明文，从阐释健康饮食的不同方面展开，采用举例子、对比、列数字、下定义等说明方法详细说明了如何保持健康饮食。总体来说，本文语言生动简洁，结构层次分明，言之有理，合乎逻辑。
课时目标
1.获取、梳理、描述保持健康饮食的几个方面。
2.分析判断作者的写作手法，掌握语篇特征。
3.联系个人生活，使学生在新的语境中，用得体的语言以书面形式描述自己的健康饮食习惯，实现对语言知识和文化知识的内化，促进能力向素养的转化。
4.通过结对合作，对同伴的草稿进行批判性评价与相互学习，培养学生批判性思维及与他人合作学习的能力。
重点难点
重点：
1.获取文章的有效信息，描述如何保持健康饮食。
2.分析和判断作者的写作手法及文章的主要语篇特征。
难点：
用恰当的语言阐释自己对健康饮食的观点。
教学准备
教师准备：
搜集保持健康饮食的相关资料、图片。
学生准备：
1.预习新词汇和课文。
2.在网上查找保持健康饮食的相关资料。
教学过程
Step I 学习理解
活动一：感知与注意
Show a picture about Food Pyramid and ask students to discuss the following questions.
Food Pyramid
·What do you think makes up a healthy diet
·What are some rules for healthy eating
【设计意图】通过讨论食物金字塔，提高学生对健康饮食的认识，使学生提前进入话题，为接下来的文章阅读做好准备。
活动二：获取与梳理
1. Read and choose.
Ask students to read the passage and match the subheadings with the paragraphs.
Paragraph 1: _______________________
Paragraph 2: _______________________
Paragraph 3: _______________________
Paragraph 4: _______________________
Paragraph 5: _______________________
A. Slow Eating is Good B. Reducing Sweets is Key C. The Real Killer is Sugar D. The Way You Look at Food is Most Important E. Keep It Fresh and Balanced
Suggested answers:
Paragraph 1: C Paragraph 2: B
Paragraph 3: E Paragraph 4: A
Paragraph 5: D
2. Read and answer.
Ask students to read the passage again and choose the best answers.
①According to the passage, what is the biggest killer of heart A. Fatty food. B. Too much sugar. C. Fruit and vegetables. D. Animals’ meat. ②What diet should we eat if we want to keep healthy A. Sugar and fat. B. Dairy products. C. A balanced diet. D. Processed foods. ③What is the main purpose of the passage A. To introduce a new diet to people. B. To analyse the composition of food. C. To explain the effect of sweet on health. D. To tell readers what a healthy diet is. ④Where is this passage most likely from A. A novel. B. A guidebook. C. A diary. D. A magazine.
Suggested answers:
①B ②C ③D ④D
3. Study the language and structure.
（1）Ask students to find the key details that support each point.
A The real driver of poor health is not so much fatty food, as it is sugar.
Detail(s): __________________________________________________
B Much of this extra sugar comes from sweets and sweet drinks.
Detail(s): __________________________________________________
C You can keep healthy by consuming different categories of fresh foods… rather than processed foods.
Detail(s): __________________________________________________
D A fundamental key to healthy eating is to eat slowly.
Detail(s): __________________________________________________
Suggested answers:
A
In America, people who receive 25% of their daily calories or more through sugar are twice as likely to die from heart disease than people who receive less than 10% a day.
B
The average American gets 1/3 of his or her sugar through sweet drinks alone.
C
Detail 1: Fruit and vegetables are full of vitamins and fibre.
Detail 2: Processed foods often contain less nutrition, and have higher quantities of sugar, salt, and fat than fresh ingredients.
D
Detail 1: People who chew too quickly end up eating too much food because they still feel hungry.
Detail 2: Eating slowly also allows your body to digest your food better, and will allow you to enjoy your food more.
（2）Ask students to underline the linking words in the passage that introduce another way of saying what was already mentioned in the previous sentence.
Suggested answers:
put more simply; in other words; what this means is that
（3）Ask students to circle the linking words in the passage which show that contrasting ideas are being introduced.
Suggested answers:
However; while; rather than; rather
4. Fill in the blanks.
Ask students to fill in the blanks based on the passage.
What makes up a healthy diet Scientists have found that the real driver of poor health is sugar rather ①________ so much fatty food. This is true ②________（regard）of how healthy the rest of their diet might be. If you want to be healthy, you have to cut down on sweet. Beyond this, you can keep healthy by consuming different ③________（category）of fresh foods, especially fruit and vegetables. It is also important to have some meat, beans, or dairy products, ________（provide）the necessary protein for bones and muscle growth. The ideal diet is a ⑤________（balance）one, without too much or too little of any one thing. Finally, a ⑥________（fundament）key to healthy eating is to eat slowly, which also allows your body ⑦________（digest）your food better. In addition, ⑧________（consistency）eating habits like taking three meals a day at the same time and eating a modest amount of food each time a day ⑨________（be）better for our health. There is no one trick ⑩________ healthy eating. It matters that having a healthy attitude towards food. It is up to you to make the right decisions about your diet.
Suggested answers:
①than ②regardless ③categories ④providing
⑤balanced ⑥fundamental ⑦to digest
⑧consistent ⑨are ⑩to
【设计意图】通过获取文章的段落大意、针对文章内容选择正确的答案和回答问题、学习文章的语言及结构特点、根据课文内容填空等活动，帮助学生深入理解课文内容，掌握文章细节信息。
Step Ⅱ 应用实践
活动三：分析与判断
Ask students to work in groups of four and discuss how the author writes the passage.
Suggested answer:
The author explains the important principles of healthy diet by means of data analysis, providing definitions, making comparisons and giving examples.
【设计意图】作者采用多种写作手法，阐释了健康饮食的重要原则。
活动四：内化与应用
1. Write down everything you ate and drank over the last three days.
Suggested answers:
（略）
2. Compare what you have had over the last three days with the advice written in the article, and any facts about diet and nutrition that you know to be true. Make two lists:
Suggested answers:
▲Good habits:
I eat a variety of things.
▲Bad habits:
I get busy and sometimes forget to eat, and then when I eat I tend to eat quickly, such as bread or an orange. Also, I am already on a diet, but this is the holiday season, so people keep giving me sweets. Because I am busy and hungry, instead of saying no to the sweets. I eat them.
3. If you have bad eating habits, make a list of things you can do to get rid of them.
Suggested answer:
Say no to sweets, even though it is the holiday season, and take more time to eat.
4. Use your notes to write your essay. You can start like this:
Overall, I think I have healthy/unhealthy eating habits. As for the things that I am doing right,... Still, I should improve my eating habits by…
【设计意图】本活动为写作实践，在写前引导学生用之前所学语言知识对健康饮食进行讨论，并更进一步将自已的饮食习惯与健康饮食相对比，旨在降低写作难度，增强写作的信心。
Sep Ⅲ 迁移创新
活动五：批判与评价
Exchange your draft with a partner.
（1）Use the checklist to help you revise your partner’s draft.
√ Does the writer use details to support each point
√ Does the writer use proper linking words to tie the essay together
√ Has the writer really thought about his or her diet carefully
√ Does the writer use vivid words to add stress to his or her points
（2）Take your draft back and revise it.
（3）Share your essay with the rest of the class.
【设计意图】该环节通过结对合作，探讨文章是否使用细节支持观点，是否使用恰当的关联词，是否曾经仔细思考过饮食习惯等细节内容，让学生对同学的草稿进行综合评价与相互学习，加深对主题意义的理解和批判思维及多元思维的培养，实现深度学习。
板书设计
Unit 3 Food and Culture Period Ⅴ Using Language(2) I.学习理解 活动一：感知与注意 活动二：获取与梳理 1. Read and choose. 2. Read and answer. 3. Study the language and structure. 4. Fill in the blanks. Ⅱ.应用实践 活动三：分析与判断 活动四：内化与应用 Ⅲ.迁移创新 活动五：批判与评价
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