Unit13We.doc

Unit13 We’re trying to save the earth! 一、教学目标基本词汇：cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, upside, gate, bottle, president, inspiration, iron, work, metal, creativity, 基本词：… down, bring back 基本句型：’re trying to save the earth! The river used to be so clean. The air is badly polluted. No scientific studies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标: 能情感目标: 教学重点能教学难点：教学步骤: Section A 1 (1a-2d) Presentation Show the picture of the earth and tell students the earth is polluted now. For example: (1) The factories that burn coal pollute the air with a lot of black smoke. (2) Factories put waste into the river. (3) People should throw away litter in the bin. (4)There are more cars on the road. II. Learning Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. loud music cars rubbish planes littering ships factories smoking building houses mobile phones noise pollution air pollution water pollution III. Listening 1. 1b Listen and complete the sentences. What was the problem? The river was _____________. Even the bottom (底部) of the river was full of ________. There were no more ______ for fishermen (渔民) to catch. What caused the problem? People are throwing _______ into the river. Factories are putting ______ into the river. How should the problem be solved? We should write to the ____________ and ask them to ___________ the factories. Everyone should help to __________ the river. 2. Listen again and check (√) the sentences you hear. 1) We could go fishing in the river. 2) The river was really dirty. 3) The river has always been the nicest river in this town. 4) We should ask the teachers for help. IV. Practice 1. Role-play the conversation in 1c. 2. Make conversations using the pollution in 1a. V. Language points 1. W