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1、Unit 13Were trying to save the earth!Section A 1a-2c一、教学目标：1. 语言知识目标基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, upside,
2、 gate, bottle, president, inspiration, iron, work, metal, creativity, 基本词组：be harmful to, at the top(of sth.), take part in, turn off, take action, throw away, put sth. to good use, pull down, bring back基本句型：Were trying to save the earth! The river used to be so clean. The air is badly polluted. No
3、scientific studies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标: 能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。3. 情感目标: 有环境危机意识，学会关注环境保护环境。二、教学重难点： 1. 教学重点：（1）能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。 （2）保护环境的措施方法。2. 教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。三、教学步骤:
4、Step one Lead-inIntroduce some kinds of pollution. Ask students to talk about all kinds of pollution simply.Step two presentation1. Do 1a. Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.2. Listening. Listen to the tape and finish the for
5、m in 1b. Then check the answers.3. Listen again and check the sentences you hear is true or false.(1). We could go fishing in the river.(2). The river is really dirty.(3). The river used to be the nicest one in this town.(4). We should ask the teachers for help.4.Role play the conversation in 1c and
6、 use the pollution in 1a to make a new conversation.5. Listen to the interview in 2a. Circle the kinds of pollution that Jason and Susan talk about.6. Listen again and complete the sentences in 2b.7.Listen and answer the questions bellow.(1). Who is the interviewer talking to?(2). What are they talk
7、ing about?(3). What other problems do they see?8. Role-play conversations between Jason and Susan.9. Free talk: What are your ideas for solving these problems?10. Read 2d and complete the chart.Step three sum-upShow pictures and ask: What should do to save the earth?Step four homeworkThe earth is badly polluted. Please make a poster and think of what we can do.
