Unit 22 Lesson 1（北师大）.docx

北京师范大学出版社 (选修八) 畅言教育Unit 22ENVIRONMENTAL PROTECTIONLesson 1 Global Warming 教材分析This unit is about environment. Global Warming is the first lesson of Unit 22. It is about the the importance of environment. 教学目标【知识与能力目标】1.To have a better understanding of what global warming is 2.To know the serious consequences that global warming may cause3.To realize the importance that we need to take action【过程与方法目标】To helpthestudents improvetheirreadingandspeakingabilities.【情感态度价值观目标】To make the students the real masters in class and develop the students awareness of self-learning. 教学重难点【教学重点】1. To help the students learn and master some useful words and phrases.2. To help the students improve their reading and speaking abilities by scanning and skimming.【教学难点】Howtohelpthestudentsimprovetheirreading. 课前准备 Tape recorder, Multimedia 教学过程Step 1 Revision1. Ask students to say out several kinds of environmental problems.2. Match the Key Words with their Chinese meaningsconsensus bounce agriculture coincidence condemn reservation sacrifice advocate Step 2 Pre-reading1. Lead- in Use some pictures to lead to the topic- Global Warming.Ask students which countries contribute more to global warming: developed countries or developing countries.2. Prediction Based on the title “Can we take the heat”and some pictures, enable students to predict : What is the text about?Step 3 While-reading1. First reading (pair work) Match the headings with the paragraphs. Para 1. Draw readers attention to the topic by asking questions.Para 2. What should human beings do.Para 3. What is global warming.Para 4. Consequences of global warming.Para 5. What cause global warming2. Second reading Read the text carefully and answer the following questions.(1)What is global warming?(2) What human activities are causing global warming?(3) By how much has the global average temperature increased in the last 100 years?(4) Are greenhouse gases necessary for life on Earth?(5)How can each of us help solve the problem of global warming?Step4 Post-reading Listen and Complete the form Para.1Introduction: Human beings are causing_ and it is believed that _ could be one of the biggest_ in the 21st century.Para.2Definition: Global, warming refers to_ in the Earths temperature that, in turn,_ climate change.Para.3Causes:Many experts insist that the blame for this global warming can mostly_. Para.4Consequences: If we continue to produce greenhouse gases_. There will be more_ such as floodings, heat waves and droughts.Para.5Action: All governments have a responsibility to _ and each person should_.Step 5 Group discussionWhat do we learn from todays lesson?What will we do to protect our environment in our daily life? What will we do every day to help reduce greenhouse gases?We can do: energy-saving light bulbs, recy