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课 题 Unit7 Natural Disasters (Reading & Writing) 课 型 Reading and Writing 课 时 2
授课班级 授课时间 80mins 授课教师
教材分析 本课教学内容选自教材Unit 7 Reading and Writing部分，读写部分是一篇有关自然灾害和人类活动的议论文，文中主要提 到了三种因人类活动导致的自然灾害和应对措施，并提出了可持续发展对人 类和对大自然的重要性，呼吁人们注重环境保护并给出减少自然灾害的一些措施。要求学生能通过阅读文章找到细节信息，明确文章目的，通过细读文章提取文中自然灾害的原因和应对措施，能看到事实和观点并找到支撑信息，能使用相应的词汇和句型描述，自然灾害和环境保护，完成环保宣传海报。
学情分析 经过前两节课的学习，学生能识别关于自然灾害的词汇，并做简单介绍，能够意识到自然灾害有部分原因是来自于人类活动，但是缺乏语言积累，无法详细的描述自然灾害和人类活动的关系。进行开放性的思考和讨论还存在一定困难.
学习目标 1. read articles about natural disasters and human activities, and identify the relationship between natural disasters and human activities through reading. 2. Through reading the article, students will be able to find out the details of the article, clear the purpose of writing the article; to determine the facts and perspectives, find the support information and make the opening thinking and discussion. 3.describe natural disasters and environmental protection and complete environmental protection posters. 4.develop their language communication ability, thinking difference and perception ability in the workplace. By means of writing practice, students will be able to consolidate the language foundation and improve the quality of writing in the workplace.
学习重难点 1. read articles about natural disasters and human activities, and identify the relationship between natural disasters and human activities through reading. 2. Through reading the article, students will be able to find out the details of the article, clear the purpose of writing the article; to determine the facts and perspectives, find the support information and make the opening thinking and discussion.
教学方法 小组讨论法、任务教学法、情境教学法
课前准备 ppt课件，语音素材，视频与图片
教学媒体 PPT课件、多媒体设备、语音素材、拓展资源包等
教学过程
教学环节 教师活动设计 学生活动设计 设计意图
Step 1: Lead in Review T: Let’s review the vocabulary of natural disasters. The teacher shows the pictures of natural disasters and asks students to name them: sandstorm, earthquake, floods, typhoon, drought, heat waves. Human activities VS natural disasters. T: We know more and more natural disasters are caused by human activities... What human activities may lead to natural disasters (1)rapid urban development (2)cut down trees (3)heavy industry (4)gas from vehicles Review the vocabulary of natural disasters. Think about the possible human activities causing natural disasters. 复习巩固所学词汇，避免遗忘。 思考可能会导致自然灾害的原因，为文章做铺垫。
Step 2: Pre-reading Think and discuss. T: Which of the following can cause natural disasters What natural disasters may these activities cause The teacher presents choices ABD, and leads students to think about the natural disasters they may cause by using a game(翻牌子) A. Strong wind is blowing over loose soil or sand may cause sandstorm. C. Rapid urban development and heavy industries may cause smog or heat waves. D. Volcanoes and wildfires may cause floods or heat waves. Discuss with partners about the activities that may cause natural disasters. 本活动是读前活动，要求思考并选择造成自然灾害的原因，训练学生的审辩 思维能力，为后续活动做铺垫。
Step 3: While-reading What type of passage is it Let students briefly go through the passage and make clear the text type. What type of passage is it A.Narration（记叙文） B.Exposition(说明文) C. Argumentation(议论文) Answer:B(An exposition is used to explain something.) Get the main idea. T: Please go through the passage quickly to find the main idea of the passage. Key points of the choices. B: be responsible for对...负责... C: frequently adv.频繁地 Match the words with the explanations. tie...to... : connect...with... rapid: very fast urban: city due to: because of smog: a mixture of smoke and fog. vehicle: a thing used for transporting harmful: bad acid rain: rain that has bad chemicals volcano: a mountain which sprays lava sustainable:can continue for a long time damage: cause bad effects promote: help sth to happen definitely: surely Detailed reading(Q&A) Paragraph1: T: What is the main idea of paragraph1 S: Human activities caused natural disasters. T: What disasters are mentioned S: Sandstorm, smog and acid rain,volcanoes and wildfires,global warming. T: What human activities are mentioned S: Rapid urban development.Cutting down trees.Gases from heavy industry and vehicles. Paragraph2: T: Why we forget the importance of sustainable development S: Because we are growing too fast. T: What are the causes of many natural disasters S: The environmental damages caused by human activities. Paragraph3: T: What solutions are mentioned to reduce disasters？ S: Promote the use of green energy.Plant more trees.Use electric cars and public transportation. Read and complete. T: Read the passage carefully and find out the natural causes and the human activities that lead to the natural disaster. Sandstorm: strong wind blowing over loose soil and sand(natural cause)/rapid urban development,cutting down trees(human activities). Smog: heavy industries and vehicles(human activities) Acid rain: volcanoes, wildfires(natural causes)/gases from heavy industries and vehicles(human activities) Global warming: gases from heavy industries and vehicles (human activities) Key points. It is said that...据说，it引导的主语从句。 blowing over 吹过，用动名词的形式表示“主动关系” every 每隔... cutting down trees“砍树”，动名词作主语，动词原形不能作主语。 pay attention to “注意” harm伤害+ful形容词后缀 do harm to对...有害 too...to...太...而不能...; so/such...that...太...以至于... It is lucky that...幸运的是，it引导的主语从句。 realize the importance of...意识到...的重要性 sb. be advised to do sth.某人被建议做某事 advise sb. to do sth.建议某人做某事 the number of... “...的数量” ，谓语动词用单数 a number of... “一些” ，谓语动词用复数 Make clear the text type. Find out the main idea of the passage. Match the words with correct explanations. Read the passage carefully and look for the answers to these questions. Carefully read the passage and find out the natural causes and the human activities leading to the natural disasters. Take notes of the important points. 弄清文章的体裁。 掌握文章主旨，知道大概的内容。 为后面理解文章扫清生词障碍。 通过一问一答的方式从文中寻找问题的答题，弄清文章的写作逻辑和细节。加深学生对文章的深层次理解。 环节通过学生细读文章，提取有关导致自然灾害的原因及应对措施等具体信息，完成表格的填写，锻炼逻辑思维能力，为后续的写作活动做语言上的准备。 分析长难句，讲解语言点，让学生掌握宣传册的写作特点，夯实长难句有助于为后面的写作输出部分做铺垫。
Step 4: Post-reading Read and analyze. (1)T: Please read the four statements and judge which are opinions and which are facts. fact: to state the fact without showing “yes” or “no”/ “good”or “bad”. 1.3 opinion: to show one’s point of view by saying “yes” or “no”/ “good”or “bad”. 2.4 T: Please find out the supporting details of the two opinions from the passage Discuss and share. T: Discuss in pairs and think about some natural disasters caused by human activities and give proper suggestions. Mudslide: cutting down too many trees(human activities)/plant more trees(solutions) Hole in the ozone layer: Freon in air conditioning destroys the ozone layer(human activities)/Use fluorine-free air conditioning as much as possible(solutions) Tsunami: Deforestation has left the coastline unprotected (human activities)/Stop deforestation and build an ecological barrier(solutions) Read the four statements and judge fact or opinion. Discuss with partners about some other natural disasters caused by human activities and give appropriate advice. 让学生学会分辨观点和事实，明白此文章写作逻辑，为后面写作环节做铺垫。 积累相关素材，为写作部分做铺垫。
Step 5: Writing Read and describe. T: Please complete the following dialogue based on the pictures and the tips given. P1:students speak out the names of the natural disasters(earthquake, typhoon, smog) P2:T: What are the human activities that cause natural disasters, please look at the pictures. S: gases from heavy industry, gases from vehicles, cutting down trees P4: T: What are the solutions to deal with natural disasters S: use electric cars, use public transportation, plant more trees. 2.Write and practice. Sandstorms have been a major disaster for many Asian countries for centuries. Scientists have tried many ways to solve this problem and in China, a mass campaign has been started to help solve it. T: Should we join the mass campaign What can we do It’s time to act. Let’s make a poster for it. Use the information given to describe the plete the writing part according to the “Read and describe” part. 本环节要求学生通过阅读图片和提示信息，补全对话，为后续写作活动做语言方面的准备。
Step 5: Practice 单选。 1.What is the natural cause of sandtorms A.strong wind blowing over loose soil and sand. B.rapid urban development C.cutting down trees D.gases from heavy industries and vehicles 2.Which caused smog A.strong wind blowing over loose soil and sand. B.rapid urban development C.cutting down trees D.gases from heavy industries and vehicles 3.What is the natural cause of acid rain A.cutting down tres B.gases from heavy industry and vehicles. C.volcanoes and wildfires D.global warming 4.What are the solutions of these disasters A.Promote the useof green energy B.Advise peope tp use electric cars and public transportation C.Plant more trees D.Both A,B and C. 二、填空 1.Sandstorms are naturally caused by strong wind________________loose soil aor sand. 2.Half a century ago, sandstorm happened________seven or eight years. 3.Cutting down trees is another reason which is largely _________human activities. 4.These harmful gases also___________acid rain. 5.Today we are growing________fast_____remember the importance of sustainable development. 6.____is luck______humans have realized the importance of sustainable development. 7.People_______________to use electric cars and public transportation. 8. _______________ such disasters is sure to reduce. Finish the exercise. 查漏补缺，掌握重难点。
Step 6: Summary 1.吹过 blow over 2.众所周知 It is known that... 3.把...跟...联系在一起 tie...to... 4.由于 due to 5.注意 pay attention to 6.重工业 heavy industry 7.导致 lead to 8.酸雨 acid rain 9.全球变暖 global warming 10.太...而不能... too...to... 11.幸运的是 It is lucky that... 12.以及 as well as 13.建议某人做某事 advise sb. to do sth. 14.电车 electric cars 15.公共交通 public transportation 16....的数量 the number of...
Step 7: Homework （1）记住总结部分的重点词组。 （2）根据本文内容,从自然灾害发生的现象阐述(paragraph 1)、分析问题(paragraph 2)、制定解决方案、总结(paragraph 3)等方面，绘制思维导图。

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