Unit 2 Saving the EarthTopic 1 Pollution has caused too many problems.主备人： 审核：初三英语备课组 复备人：_ 时间：_课时安排4 课时The First PeriodSection A教学三维目标. 知识与能力目标1.Master some new words and useful expressions：Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, villager, destroy, cut down, goodness, pour, see sb./sth. do sth., see sb./sth. doing sth., cut down, my goodness2.Sentences: What a shame! / What a mess! The flowers and grass have gone! What has happened here?There be sth./sb. doing sth. There are several factories pouring waste water into the stream.Everything has changed. 3.Grammar: differences between Simple Past and Present Perfect tense. .过程与方法通过对比“West Hill”今昔的环境变化，引出本话题的污染问题，巩固现在完成时与一般过去时的用法及区别。. 情感态度与价值观让学生了解环境污染的严重性，并树立环保意识。教材分析1重点some new words and useful phrases; the present perfect tense2难点the present perfect tense3教法 listening, speaking and discussing4教具 multimediaThe main activities1aTeaching procedureStep 1 Review1.Lead the Ss to discuss the right place for a picnic. A: Where have you been/traveled? B: I have been/ traveled to .2. go over the present perfect tenseStep 2 Presentation1. Let the Ss discuss where to have a picnic. Encourage them to state the reasons.T: Now work in groups, choose the best place for a picnic and tell the class why you choose that place.SsT: OK, tell us where to have a picnic. Why?S1: I think is the best choice. The air there is fresh. We can fly kites on the grass. T: Kangkang, Jane, Maria and Michael are planning a picnic for Sunday.They will go to the West Hill.2. Present two pictures of the West Hill and describe the changes. Teach the new words and some difficult sentences.3. Point to the bees and butterflies, and then write down the words and phrases on the BbStep 3 Consolidation1. Listen to 1a and mark the words with P (Past) or N (Now)._ beautiful _ butterflies _ dirty _ grass _ terrible _ factory _ bees _ fresh _ clean _waste water2. Read 1a and complete the sentences in the table. Then retell 1a to your partner.Two years agoNow1. It was a _.2. There were _3. The air was _and you could see _1. _have gone.2. The water is _and smells _3. There are several _ pouring _ into the stream.4. _has changed.Step 4 Practice1. some phrases 1. 怎么样？ What about? 2.看见某人正在做某事see sb doing sth 3.真是一团糟！What a mess! 味道很难闻。It smells terrible!4. 真遗憾啊！What a shame! 5.把 倒进里面pour into 6.废水waste water 7.砍倒cut down2. 2 Work in pairs. Look at the pictures and make up conversations similar to the example with your partner.3.finish 34. do some exercisesStep 5 Project3. Work in groups and talk about pollution in a place you are familiar with. The following sentences may help you.ago, it was Now, have/ has gone. What has happened? Everything has changed. Oh, my goodness!Step 6 Homework1. Read 1a.2. Write a passage according to Part 4.3. Finish Section A in your workbook.4. Preview Section B.板书设计：Pollution has caused too many problems Section A1. 怎么样？ What about? 2.看见某人正在做某事see sb doing sth 3.真是一团糟！What a mess!4. 味道很难闻。It smells terrible!4. 真遗憾啊！What a shame! 5.把 倒进里面pour into 6.废水waste water 7.砍倒cut down教学后记：TheSecond PeriodSection B教学三维目标I 知识与能力目标Words and phrases: pain, produce, awful, bear, harmful, chest, editor, breathe/breath, soil get a pain in, whats worse, too much noise, too many problems, breathing problem, be harmful to, make a mess of, throwaroundSentences: Its difficult for me to breathe. Ive got a pain in my throat. Its really awful. A: How long have you been like this? A: Have you seen a doctor? B: Ive been like this since last week. B: Not yet.Grammar: Present Perfect (past participle和疑问句的问答).II 过程与方法通过谈论环境问题，让学生了解不同种类的污染及其危害III. 情感态度与价值观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教材分析1重点some new words and useful phrases; the present perfect tense2难点the present perfect tense3教法 listening, speaking and discussing4教具 multimediaThe main activities1a and 3aTeaching procedureStep 1 Review 1. go over the phrases in section A 2. Guide the Ss to discuss different kinds of pollution in groups and share the answer together.Step 2 Presentation1. Watch the flash, then answer the questions below. 1). Does Bruce look well? 2.) Whats wrong with him?3.) How long has he been like this? 4.) Has he seen a doctor?2. Show a picture of the polluted West Hill, let the Ss listen to 1a once and tick the questions they hear in part A of 1b. Then check the answers together. A. Listen to 1a and check the questions you hear