高中英语教学课件：Unit 3 Environmental protection Period1 Reading and thinking课件-人教版选择性必修第三册）.pptx

人教版 选择性必修三Period 1 : Reading and ThinkingDiscuss Climate changeUnit 3 ENVIRONMENTAL PROTECTION 010203By reading, explain causes and negative effects of global warming.By teamwork, present how to solve the problem of global warming in groups. Be aware of the importance of cutting greenhouse gases and take effective action to do it. Learning objectives:By the end of the class, you will be able toLearning Objectives: What do you know about global warming?Lead inThe effects are destructive as follows:The sea level to rise. Severe storms, droughts, famines, the spread of diseases, and destruction of species.Wide animals died because of starvation.Forest fire occurs frequently because of the extreme hot weather. What is the graph about? What information can you get from it?The graph is about the change of global Surface temperature.It shows us that the global temperatureis rising steadily and continuously.2. What happened in the picture? Do you know what caused it?A polar bear was dead and it is “skin and bones.”The ice is melting on the mountain.Global warming causes the melting of iceberg and some polar bears Suffer from the lack of food.Read the pictures Read the text and sum up the main idea of each paragraph: 01lobal climate is changing dramatically. An alarming case about a bear starved to death What is causing the increase in the global average surface temperature The destruction of the rise in temperature and the warningFurther possible changes to the global climate and our duty Read the text and answer the questions:1. What is the evidence of global warming?2.Why is the “natural ”greenhouse effect important and necessary?3.What are the consequence of high greenhouse gas emissions?4.Why did the author mention the climate scientists’ warning?5.What is the author’s purpose of writing the text? Read the text and answer the questions:What is the evidence of global warming?Warming ocean and atmosphere; melting and rising sea level; the starved polar animal