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Unit2SavingtheEarth（拯救地球）Unit 2 Saving the EarthTopic 1 Pollution has caused too many problems.Section B1.Knowledge aims：掌握本课的重点词汇和短语，正确运用现在完成时进行问答。
2.Skill aims:能通过观察课文插图来预测课文内容。
能听懂用现在完成时表达的对话。
能朗读和表演有关环保的对话。
能正确运用连读和停顿的技巧，使发音流畅，富有韵律感。
3.Emotional aims: (optional)引导学生关注环境问题，树立绿色环保意识，增强忧患意识和社会责任感。
4.Culture awareness: (optional)通过谈论环境问题，让学生了解不同种类的污染及其危害。
Ⅲ. The key points and difficult points1. Key points:Words and phrases: pain, produce, awful, bear, harmful, chest, editor, breathe/breath, soilget a pain in…, what’s worse, too much noise, too many problems,breathing problem, be harmful to, make a mess of, throw…around Sentences: It’s difficult for me to breathe.I’ve got a pain in my throat.It’s really awful.A: How long have you been like this? A: Have you seen a doctor?B: I’ve been like this since la st week. B: Not yet. Grammar: Present Perfect的问答。
