(
课件网) Using language Talk about air pollution Unit 3 ENVIRONMENTAL PROTECTION To learn to talk about air pollution To listen to an interview and determine whether statements are true or false To listen for detailed information To discuss the air pollution using target expressions Lead-in Review the passage and answer the questions. 1. What have you learnt from the passage 2. What causes globe warming We learnt about global warming. Extra greenhouse gases. Lead-in Review the passage and answer the questions. 3.Where do greenhouse gases come from Many greenhouse gases occur naturally in the atmosphere, while others are man-made. Most of the greenhouse gases of human-caused come primarily from fossil fuels — coal, natural gas, and petroleum (石油，原油) — for energy use. The large amount of extra man-made greenhouse gases is directly related to the problem of global warming. Besides that, the greenhouse gases have been influencing our daily life. Lead-in Watch a video about man-made greenhouse gases Lead-in Discuss the following questions after watching the video 1. What information can you get from the video 2. How do these situations influence your life From the video I can see chimneys are in a power station and the sky is grey. Both places look very polluted. I can see some coal being burned. These situations influence my life not only by providing electricity for me, and transporting me, but also by polluting the air I breathe. From the video I know the air pollution can cause serious health problem. Pre-listening Before you listen, look at the pictures below and discuss the questions The bridge is in London. The chimneys are in a power station. the burning coal They all look very polluted. Pre-listening Before you listen, look at the pictures below and discuss the questions What is it And what do you think about it NEVs (new energy vehicles) New energy vehicles can be powered by electricity. They are the breakthrough point for China to develop new energy automobiles. Pre-listening Before you listen, look at the pictures below and discuss the questions Judging from pictures and questions above, Can you guess what the interview will talk about These pictures tell me that the interview is probably about energy and pollution. Skim Activity 2. What do you think the air pollution expert might talk about Some key words: smog, combination, fossil fuels, wood etc. While-listening Listen to the interview with an air pollution expert and decide whether the statements are true (T) or false (F). 1. The expression “smog” originated in Britain and means a combination of “smoke” and “fog”. 2. Smog became a severe problem in Britain because people at that time burnt lots of fossil fuels. 3. The worst smog in British history happened in London in 1942. 4. The Great Smog of London claimed 5,000 lives. 5. Later, the UK government ordered people not to burn wood in their homes. T F T F T F T F T F ... ...
