人教高中英语Unit 3 Period 1 Reading and Thinking教案.docx

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1、新人教版（2019）英语选修性必修三Unit 3 Environmental protection Period 1 Reading and Thinking教学设计课题 Unit 3 Period 1 Reading and Thinking单元Unit 3 学科English年级Grade 2教材分析This is the first period of this unit. This section takes Discussing Climate Change as the activity theme, and guides students to Discuss the manif

2、estations, causes, consequences and countermeasures of global warming. Making lifestyle changes to reduce carbon emissions and educating the public about them are actions individuals can take on the planet.This section includes four reading comprehension activities, which are designed to reflect not

3、 only the whole reading process, but also the different thinking levels of reading comprehension.学习目标与核心素养Knowledge objectives: To grasp the following vocabulary correctly：starve, ecology, release, carbon, sustain, fuel, comprehensive, trend, frequently, broadcast, policy, restrict, seize,greenhouse

4、 effect, along with, refer to, carbon dioxide, fossil fuel, result inTo be able to read an explanatory text about climate change to understand the causes and harm of global warming.Skill objectives: Be able to clarify the causal relationship between things and make flow charts and mind maps to expre

5、ss this relationship.Emotional objectives: Be able to understand how climate change plays out in different countries and regions and how it affects peoples life and production in different countries and regions.Thinking quality objectives:Be able to distinguish critical information from non-critical

6、 information.重点1. How to understand the causes and harm of global warming.2. How to use the vocabulary correctly.难点How to distinguish critical information from non-critical information.教学过程教学环节教师活动学生活动设计意图导入新课Lead in (PPT1-6)1.Look at the picture and read the quote.Earth provides enough to satisfy e

7、very mans needs, but not every mans greed.-Mohandas K. GandhiAnswers:地球所提供的物质财富,足以满足每个人的需 求，却不足以满足每个人的贪欲.2.Who is the man in the picture?Mohandas K. Gandhi (1869-1948)He is commonly known as the “Father of the Nation in India, also being called Bapu”，meaning father. He is known for many other popula

8、r and inspiring sayings, such as:The future depends on what we do in the present.Be the change you want to see in the world.Look at the picture and discuss some questions.How do you understand the quote? How is it related to the theme of the unit?Answers:1).The environment of the earth, i.e., nature

9、, has evolved to provide enough to satisfy the basic needs of all living things within it, including mankind.However, nature cannot provide enough to satisfy everyones greed, because greed is a desire that can never be satisfied.2).The quote is used here to suggest that consumption powered by greed

10、is a prime cause of environmental degradation.4.Look at the picture and discuss some questionsWhat do you think this photo was taken?What does this photo make you think of?Answers:1.I think this photo was taken in either the Arctic or Antarctica, as those places have large ice sheets like this.2.The

11、 photo makes me think of the problem of global warming.Students read the famous sayings and translate it. The teacher shows Gandhis information and the students read it.Students themselves describe the picture and express themselves freely.To pay attention to environmental protection.To learn about

12、more knowledge about Gandhi.新课讲授Pre-reading (PPT7-12)1.Look at the title and pictures and discuss the questions1).What kind of reading passage is it? How do you know?2) Who are the target readers?Answers:1).Its an exposition.The authors sometimes use some graphs or diagrams in their essays in order

13、to convince their readers. These graphs and diagrams often come from scientific research reports and other reliable resources.2) .Researchers, climate experts or students.2.Look at the graph and answer the question.1.What is the graph about?What information can you get from?2.In which year did the t

14、emperature start to increase quickly? Why?3.In which year did the temperature start to increase quickly? Why?4.What do you think may have caused the global temperature rise?Answers:1.The graph shows the change in the Global Surface Temperature between 1920 and 2016. 2.It shows the temperature anomal

15、y, which shows how much the temperature has risen above what it would usually be at a base level.3.In 1992. Since then, the modernization of industrial technology has accelerated, living standards have risen, and greenhouse gas emissions have increased. 4.I think its caused by increased greenhouse g

16、as emissions and air pollution. Look at the picture and answer the questions.1. Have you ever seen the photo before?2.What might be the story behind it ?Answers:1.I havent seen this photo, but I have seen photos like it.2.The story is that the polar bear starved to death because it could not find en

17、ough to eat.Brainstorm:What other consequences may global warming bring about?Reading (PPT13 -26)1.Read the text,divide the structure of the article and complete the general idea of each part.2.Read the first and second paragraphs and answer the questions.1).What happened to the polar bear in the ph

18、oto?2).Why did the writer write about it?3).Can you use your words to describe how climate change have influenced the polar bears life?Answers:1).The polar bear in the photo died of starvation. 2). The writer wrote about it because it showed one of the effects of rising temperatures due to climate c

19、hange.3). 3.Read the third paragraph and analyse the structure of it.4.Read the third paragraph and answer the questions.4).Why is the “natural”greenhouse effect important and necessary?5).What are the consequences of high greenhouse gas emissions?Answers:4).The natural greenhouse effect is importan

20、t because it warms the Earth9s surface and keeps it habitable.5).High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.5.Learn the tips and answer the questions.Draw a diagramDiagrams are very useful tools that can be used to brainstorm ideas,

21、map out processes, show cause and effect relationships,explain a new idea or concept, and so on.When you read an essay about scientific issues, you can try drawing a diagram,which will not only allow you to visualize the problems more clearly but also can help demonstrate your creative thinking and

22、problem-solving.6).What is a diagram? Have you ever seen any diagrams in your physics or geography coursebooks?7).When do authors use diagrams in their writing? Whats the benefit of using diagrams? Answers:6).Diagrams are used to brainstorm ideas,map out processes, show cause and effect relationship

23、s,explain a new idea or concept, and so on.Yes,I have.7).When explaining about scientific issues, authors can try drawing a diagram.It will not only allow you to visualize the problems more clearly but also can help demonstrate your creative thinking and problem-solving.6.Read the third paragraph an

24、d find out the information related to Activity 3.l The naturalgreenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earths surface as short-wave radiation.lThe heat is released back into space at longer wave lengths.lGreenhouse gases in the atmosphere, such as m

25、ethane and carbon dioxide, trap some of the heat,keeping Earths climate warm and habitable. Read the third paragraph and create a diagram describing how the greenhouse effect works.Answers:7. Read the fourth paragraph and analyse the structure of it.8.Read the fourth paragraph and answer the questio

26、ns.8).Why did the author mention the climate scientists warning?9).What examples of extreme weather and disasters do you know? Can you make a list?Answers:8)The author mentioned the climate scientists warning because it is essential that we take action and so it needs to be brought to everyones atte

27、ntion.9)There are sadly many examples of extreme weather and disasters I know of, such as the extreme rainfall in France and the drought in East Africa in 2014. There were also heatwaves on nearly every continent due to climate change.9.Read the fifth paragraph and answer the question.10).What is th

28、e authors purpose of writing this text?11).How can individuals reduce carbon footprint”?12).Do you think climate change is the result of human activity? Give your reasons .13).What writing techniques does the author use in order to achieve his/her purpose?Answers:10).The authors purpose is to inform

29、 the reader and inspire them to do whatever they can to deal with this problem. 11).By restricting the amount of carbon dioxide our lifestyles produce.12).I do think that climate change is the result of human activities because the majority of scientists also think so, and also because global temper

30、atures have followed the rise in global emissions and population.13).Use charts, examples, explanations,questions, comparisons, and leave a question at the end of your essay.Post-reading (PPT27-30)Discuss the question in groups.1. Do you think climate change is the result of human activity? Give you

31、r reasons. 2. Who do you think should take responsibility for dealing with climate change? What can we do?Answers:1 :I do think that climate change is the result of human activities because the majority of scientists also think so, and also because global temperatures have followed the rise in globa

32、l emissions and population.2：I think we all need to take responsibility for dealing with it. Individuals can change their behaviour and try to reduce their carbon footprint, while companies and governments can do the same on the larger scale.Here is a mind map about the measures to pay attention to

33、it：Language points words (PPT 31-40)1.starve 考查热度【热点品味】starve vi. &vt. (使)挨饿； 饿死；缺乏的【教材原句】An expert who has studied polar bears for many years said that from the position of its dead body, the bear appeared to have starved and died.一位研究北极熊多年的专家说，从它尸体的位置看，这只熊似乎是挨饿而死的。【实例品读】Shes starving herself to tr

34、y to lose weight.她正在用节食的方法减轻体重。These animals will starve to death if not given food soon.这些动物不赶快喂些食物就会饿死。【热点归纳】starve to death 饿死starve for sth. 渴望获得某物；缺乏starve to do sth. 渴望做某事starvation n. 饿死【考点精练】单句语法填空Theyll either die from the cold or starve _ death.When will the dinner be ready? We _ (starve).

35、He looks forward to the day when no one will die of _ (starve).Answers:to;are starving;starvation2.release 考查热度【热点品味】release vt. &n. 排放；释放；发布 【教材原句】 The heat is released back into space at longer wave lengths.热量以较长的波长释放回太空。【实例品读】The contraction of muscles uses energy and releases heat.肌肉的收缩消耗能量并且排放热

36、量。When is the best moment to release the date of the election to the newspapers?什么时候是向报界透露选举日期的最好时机？【热点归纳】release a book/ a new film 发行书/新影片release information 透露消息release from 从释放release of 解除，使放出release to 向发行【考点精练】单句语法填空The patient asked the doctor to give him something that would release him _ h

37、is pain.The prisoner has served his sentence and _ (release) tomorrow.On the peak, she burst into tears, _ (release) all her emotions.Answers:from,will be released;releasing3.sustain 考查热度【热点品味】sustain vt. 维持；遭受；承受住【教材原句】 Without this process, Earth could not sustain life. 没有这个过程，地球就无法维持生命。【实例品读】They

38、 had sufficient food to sustain life.他们有足够维持生命的食物。The company sustained losses of millions of dollars.公司遭受了数百万元的巨大损失。【热点归纳】sustain the injury 受到伤害sustain life 支撑生活sustain losses 蒙受损失sustainable adj. 可持续的；合理利用的【考点精练】完成句子The problem was how to get enough food _.问题在于如何找到足够的食物维持生命。The branches could har

39、dly _.树枝已很难支撑水果的重量。Answers:to sustain life ;sustain the weight of fruit4.trend 考查热度【热点品味】trend n. 趋势；趋向；动向【教材原句】 Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there wil be a higher price to pay. 气候科学家警告说，如果我们不采取适当的行动，这种变暖趋势可能

40、会继续下去，并将付出更高的代价。【实例品读】The underlying trend of inflation is still upwards.通货膨胀的潜在趋势仍然是上升的。The youth like to follow the latest trends in fashion.年轻人喜好追求最新的流行款式。【热点归纳】set a/the trend 开风气之先，带领新潮流follow the trend 赶时髦the trend in 的时尚the trend of 的形势the trend to 的倾向【考点精练】完成句子The event _ public opinion.这件事改

41、变了舆论的趋向。There is _ earlier retirement.提早退休者有增加的趋势。Answers:changed the trend of;a growing trend to5.restrict 考查热度【热点品味】restrict vt. 限制；限定；束缚【教材原句】We as individuals can also reduce ourcarbon footprint by restricting the amount of carbon dioxide our lifestyles produce.作为个人，我们也可以通过限制生活方式产生的二氧化碳量来减少我们的“碳

42、足迹”。【实例品读】In a move to restrict imports, the government raised custom duties.政府在限制进口的措施中提高了关税。Recent laws have tended to restrict the freedom of the press.新法例有限制新闻自由的趋势。【热点归纳】restrict to 把限制控制，保持restricted adj. 有限的，受限制的restriction n. 限制规定；限制法规；约束【考点精练】单句语法填空Access to the club is restricted _ members

43、 only.I restrict myself to _ (smoke) two cigarettes a day.The government has agreed to lift _ (restrict) on press freedom.完成句子Their policy was to _.他们的政策是限制我们的发展。 The number of students per class _ 40每个班的学生人数被限定为40人。Answers:to;smoking;restrictions;restrict our growth;is restricted toLanguage points

44、phrases(PPT41-44)1. refer to 考查热度【热点品味】提到，谈及，说起；查阅；有关，针对【教材原句】The naturalgreenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earths surface as short-wave radiation.“自然”温室效应是指太阳的热量以短波辐射的形式进入大气层，使地球表面变暖。【实例品读】She always referred to Ben as “that nice man”.她总是称本为“

45、那个大好人”。“In fact，tradition also refers to the things that have been developing and that are still being created，”he said.他说，事实上，传统也指一直在发展的和仍正在被创造的东西。【热点归纳】(1)refer to as 把称作refer to 将送交给(以求获得帮助等)(2) reference n. 言及；提及；参考；查阅(3)辨析：refer to/look up在表示“查阅”之意时，refer to后多接参考资料(字典，书籍等)；look up多接查询的内容。【考点精练】

46、单句语法填空While giving the English speech, one is not allowed to refer _ the notes.Youd better write down the phone number of that restaurant for further _ (refer).Answers:to;reference2.result in 考查热度【热点品味】 导致【教材原句】 Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate. 持续的温室气体排放将导致进一步变暖和全球气候的长期变化。【热点归纳】result in“导致”与lead to“导致”同义