【课件】Unit+3Reading+and+Thinking+课件人教版（2019）选择性必修第三册.pptx

Environmental ProtectionEnvironmental ProtectionReading and ThinkingReading and ThinkingLearning objectivesBy the end of this period,students will be able to:1.know about climate change and summarise the main idea of each paragraph.2.learn about the greenhouse effect and create a diagram describing how it works.3.analyse the consequences of climate change and enhance the awareness of environmental protection.4.voice their personal opinions about how to deal with climate change.Teaching ProceduresTeaching Procedures1.Lead-in2.Pre-reading3.While-reading4.Post-reading5.HomeworkLead in1.Where do you think this photo was taken?2.What does this photo make you think of?Earth provides enough to satisfy every mans needs,but not every mans greed.地球能满足人类的需要，但不能满足人的贪婪。Pre-reading1 Before you read,look at the graph and the picture below and discuss these questions in groups.1 What is the graph about?What information can you get from it?The graph shows the change in the Global Surface Temperature between 1920 and 2016.It shows the temperature anomaly,which shows how much the temperature has risen above what it would usually be at a base level.2 Have you ever seen the photo before?What might be the story behind it?I havent seen this photo,but I have seen photos like it.The story is that the polar bear starved to death because it could not find enough to eat.While-readingActivity 1 Reading for the main idea and the structureSkim the text and match the main idea of each paragraph.Paragraph 1A.The reasons causing the increase in temperature.Paragraph 2B.Introduce the present situation about climate change.Paragraph 3C.A real case showed the impact the increase in temperature had onEarths ecology.Paragraph 4D.What should we humans do about global warming.Paragraph 5E.The serious consequences of global warming.While-readingActivity 2 Read the text and answer the questions.1 What happened to the polar bear in the photo?Why did the writer write about it?2 Why is the“natural”greenhouse effect important and necessary?3 What are the consequences of high greenhouse gas emissions?4 Why did the author mention the climate scientists warning?5 What is the authors purpose of writing this text?While-readingActivity 2 Read the text and answer the questions.1 What happened to the polar bear in the photo?Why did the writer write about it?The polar bear in the photo died of starvation.The writer wrote about it because it showed one of the effects of rising temperatures due to climate change.2 Why is the“natural”greenhouse effect important and necessary?The natural greenhouse effect is important and necessary because it warms the Earths surface and keeps it habitable.3 What are the consequences of high greenhouse gas emissions?High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.While-readingActivity 2 Read the text and answer the questions.4 Why did the author mention the climate scientists warning?The author mentioned the climate scientists warning because it is essential that we take action and so it needs to be brought to everyones attention.5 What is the authors purpose of writing this text?The authors purpose is to inform the readers and inspire them to do whatever they can to deal with this problem.重点句子分析There is little doubt that Earth is getting warmer and warmer.本句是复合句。本句是复合句。There is little/no doubt that.There is little/no doubt that.“毫无疑问毫无疑问.”，thatthat引导同位语从句，解引导同位语从句，解释说明释说明doubtdoubt的具体内容。的具体内容。There is little doubt about/whether.There is little doubt about/whether.对对/对是否对是否.有些疑问。有些疑问。I doubt whether/if.I doubt whether/if.我怀疑我怀疑是否是否.I dont doubt that.I dont doubt that.我确信我确信.重点句子分析 According to the scientists who found its dead body,all that remained of the polar bear was“skin and bones”.关系代词关系代词whowho引导定语从句，修饰引导定语从句，修饰the scientiststhe scientists；关系代词关系代词thatthat引导定语从句，修饰引导定语从句，修饰allall；all that.=what.,thatall that.=what.,that引导定语从句，修饰引导定语从句，修饰allall。all that all that若改为若改为whatwhat，whatwhat引导的是名词引导的是名词性从句。性从句。重点句子分析There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide,not only causing serious damage,but also costing human lives.本句是复合句。本句是复合句。There is evidence that.There is evidence that.“有证据表明有证据表明.”,that.”,that引导同位语从句，解释说引导同位语从句，解释说明明evidenceevidence的具体内容。的具体内容。not only.but also.not only.but also.“不仅不仅.而且而且.”，连接两个并列的成分，连接两个并列的成分，此处连接了两个作结果状语的现在分词短语。此处连接了两个作结果状语的现在分词短语。Post-readingRead the text again and create a diagram describing how the greenhouse effect works.Discuss these questions in groups.1 What examples of extreme weather and disasters do you know?Can you make a list?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.2 Do you think climate change is the result of human activity?Give your reasons.I do think that climate change is the result of human activity because the majority of scientists also think so,and also because global temperatures have followed the rise in global emissions and population.Post-readingDiscuss these questions in groups.3 Who do you think should take responsibility for dealing with climate change?What can we do?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.Post-reading1.Lucid waters and lush mountains are valuable as mountains of gold and silver.青山就是金山银山。2.If we dont save water,the last drop of water will be our tear.如果我们不节约用水，那么最后一滴水将会是我们的眼泪。3.To protect our planet,we should first pay attention to environmental problems and then take measures to tackle them,aiming to live in hammony with nature 为了保护我们的星球，我们应首先关注环境问题，然后采取措施解决这些问题，力求与自然和睦相处。4.Only by changing the way we treat the environment can we get along well with it.Only by saving the environment can we save ourselves.我们只有政变对待环境的方式，才能和它好好相处。我们只有拯救环境，才能拯救自己。5.When the sky becomes blue again and the rivers become clean,well live a healthier and happier life.当天空再次变得湛蓝，河水变得清洁，我们会过上更健康、更快乐的生活。写作佳句写作佳句Homework1.金练P95-P96 一二三题2.金练P98 课文语法填空Thanks for listening!