仁爱版九年级英语Unit2 Topic1导学案
九年级上册英语导学案课题：Unit 2 Saving the EarthTopic 1 Pollution has caused too many problems Section A【学习目标】1学习直接引语和间接引语2谈论污染话题，提高环保意识【学习重点】重点活动是1a 1b和3a【学习难点】直接引语和间接引语之间的转换学习过程：一：导入：二：自学指导：一. 读1a，完成1b的内容.注意时态的变化。
当主句为现在时或一般将来时态，宾语从句可以是_______时态。
当主句的时态是过去时态，宾语从句则为________。
当从句是客观真理，从句为_______________。
二. 在文中找到并划出下面的短语1.计划一次野餐_________________2.一些化工厂________________________3.两天后_______________4.难闻______________5.把…倒入… ______________6.对动物造成很大的伤害_____________三. 在文中划出下面的句子并分析1.You would see bees and butterflies dancing? 译：点拨:see sb. doing sth.---看见某人正在做某事。
强调事件，(延续性)行动正在进行。
对比:see sb. do sth.---看见某人做某事。
表示看见整个事件，(短暂性)行动的全过程，动作已经结束。
总结：这样的动词还有---hear, watch, find, feel---叫做感官动词2.The flowers and grass have gone！译：_______________________________点拨：have/has gone---已经不复存在，不见了，消失了我的足球不见了，我找不到它了。
3. It smells terrible. 译：__________________________________________ 点拨：smell terrible --- 系表结构总结：系动词本身有词义，但不能单独用作谓语，后边必须跟表语（多为形容词），构成系表结构说明主语的状况、性质、特征等情况。
常见的系动词:be, feel ,sound, taste, smell, look, turn, become ,get ,go ...4. Look,there are several chemical factories pouring waste water into the stream.译：____________________________①waste废弃的，无用的(形容词) waste land___________ waste water___________ waste --- 废物，废料(名词) 常用短语：(a) waste of…---一种…的浪费waste --- 浪费(动词) 用法：waste … doing sth.--- 浪费…做某事②there be + sb./sth. + doing sth. 有某人某物正在做某事有个小男孩正在树下玩耍。
译：________________________________________ 拓展：there be + sb./sth. + to do sth. 有某人某物去做某事练习：a. There is no time to think. 译：______________________________________ 【练习】一、单项选择。
( )1 Reading in bed is harmful _________your study.A atB toC inD on( )2 Kangkang said he ________bees dancing here in the future.A will seeB seeC seesD would see( )3 We _______with our noses.A smellB lookC soundD taste( )4 ________pollution can cause trouble.A Much tooB Too muchC FewD Too many( )5 Oh , _______! You’ve made so many mistakes .A bad luckB my goodnessC I hope notD of course( )6Time is knowledge , and time is money, don’t ________it , please.A influenceB influencesC wastedD waste( ) 7 We’re too tired . Let’s go out and ________the fres h air.A breatheB breathC to breatheD to breath()8 Don’t throw rubbish into the rivers. You may ________them.A polluteB pollutionC pollutedD polluting( )9 There is a man _______you at the school gate now.A is waitingB waitingC waiting forD waits( )10 The government has done___to stop the pollution, so the air becomes fresh again.A useful somethingB nothingC something usefulD anything usefulSection B学习目标：1继续学习并掌握直接引语和间接引语的用法。
2学习表达责备和抱怨。
学习重点：重点活动是1a和1b学习难点：掌握直接引语和间接引语的用法学习过程：一：导入：二：自学指导：一. 在文中找到并划出下面1.看起来很虚弱_________________2.排放有害气体_________________3.make my chest hurt______________4.另外_________________________5.产生很多噪音_________________6.睡得好____________7.心情糟糕________________ 8.不能忍受这样的环境___________9.河里的死鱼__________________ 10.尽快解决这一问题_____________11.引起许多麻烦_________________ 12.给报社写信__________________二. 在文中划出下面的句子并分析1.What’s wrong with you? 同义句1）___________________________________ 2）____________________________3）___________________________________2.How long have you been like this? 译：_________________________________ 点拨：how long---多长时间，谓语动词必须为延续性动词。
区别：when---什么时间, 谓语动词多为短暂性动词。
练习：1) ---___________have you learned English? ---Since two years ago.2) ---___________did you start to learn English? ---Two years ago.3.The bad air makes my chest hurt. 译：________________________________点拨：hurt --- 感到疼痛(不及物动词)拓展：1)弄伤,弄疼(及物动词) 2)受伤的(形容词)4.I can’t bear the environment here. 译：____________________________点拨：bear --- 承受，容忍，经受，常与can / could连用。
5. Anyway, I hope the government will solve this problem soon.译：_________________________________________点拨：anyway---无论如何，不管怎样, 一般用于句首，后用逗号隔开。
三．认真阅读直接引语和间接引语。
四：自我检测。
一、单项选择。
( )1 The teacher asked me _______A that I could answer the questionB whether could I answer the questionC whether I could answer the questionD if I can answer the question( )2 If you want to catch the first bus, you had better ________early.A . to get upB . got up C. getting u p D. get up( )3 He asked me ,”_____________”A What are you doing when Tom leaves?B What you are doing when Tom leaves?C What were you doing when Tom leaves?D That what you were doing when Tom left.( ) 4 I’m not sure _________to call him or not.A ifB weatherC thatD whether( )5He asked Lucy if she could swim. He asked Lucy. “___________________”A I f she could swimB Can you swim?C Could you swim?D Can I swim?( )6 The office is s o small that we can’t working in it.A stands B. stand C. makes D. make( )7 How long have you known him? _I’ve known him ____________________A two years agoB since last yearC two yearsD in two years三、完形填空I can’t remember when I started collecting litter. But it was when I got tired of 1 litter nearby that I realized no one else was going to pick it up.I live near a forest in Ohio, America. I can walk there 2 three minutes. I used to love going there to play with my dog. But one day there was 3 much litter there that I became very unhappy. I decided to clean up the forest, and I wanted to 4 happy when I went again. I made my first trip to clean the forest that afternoon. I tooka big black rubbish bag with me. Ten minutes 5 I started to pick up litter, my bag was full! There were cans, bottles, broken glass and newspapers in it.From then on, I 6 to the forest four times a year to pick up litter. I often stay there for three hours. It makes me feel 7 to do something for the environment. After each trip, I look through all the litter that I’ve collected. If 8 of it is recyclable（可回收利用的）, I’ll keep it. I can’t understand why people drop litter. But I will keep on picking it up 9 they stop dropping it. I know I am only doing a small bit 10 the earth, but I still think it is important.( )1.A.seeing B.throwing C.dropping D.cleaning( )2.A.after B.for C.with D.in( )3.A.such B.very C.so D.too( )4.A.make B.feel C.look D.find( )5.A.after ter C.before D.of( )6.A.had gone B.have gone C.go D.will go( )7.A.tired B.sad C.interesting D.great( )8.A.many B.few C.any D.much( )9.A.until B.after C.as soon as D.when( )10.A.helped B.to help C.help D.helpingSection C学习目标：了解噪音污染，提高环保意识。
仁爱版九年级英语上册Unit2Topic1SectionB教案
仁爱版九年级英语上册Unit2Topic1SectionB教案Unit 2 Saving the EarthTopic 1 Section B教案教学目标1.知识与能力目标Words and phrases: pain, produce, awful, bear, harmful, chest, editor, breathe/breath, soil get a pain in…, what’s worse, too much noise, too many problems, breathing problem, be harmful to, make a mess of, throw…aroundSentences: 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 (past participle和疑问句的问答).2.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。
3.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。
教学重点1. some new words and useful phrases; the present perfect tense2. the present perfect tense教学过程Step 1 Review1. go over the phrases in section A2. Guide the Ss to discuss different kinds of pollution ingroups and share the answer together. Step 2 Presentation1. Watch the flash, then answer the questions below.1) Does Bruce look well?2) What’s 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.1) What’s wrong with you?2) How long have you been like this?3) Where have you been?4) Have you seen a doctor?5) Have you noticed the dead fish in the river?B. Listen again and match each question above with an answer below.3. Read 1a and answer the questions.1) What caused Mrs. Zhou’s problems?2) What will Kangkang do?Step 3 Consolidation1.分角色朗读2a，选择四组进行比赛，激发学生朗读兴趣。
仁爱版九年级英语上册Unit2Topic1SectionC教学设计
（一）导入新课
1.教学活动设计：教师通过展示一组关于环境问题的图片，如污染、资源浪费等，引发学生对环保话题的关注，激发学生的学习兴趣。
教学语言引导：“Look at these pictures, can you tell me what is happening to our environment? Do you think it is important to protect our environment? Why?”
3.培养学生积极向上的态度，鼓励学生面对困难和挑战时，保持乐观、勇敢面对。
4.借助本章节的学习，引导学生树立正确的人生观、价值观，使学生认识到人与自然的和谐共处的重要性。
二、学情分析ቤተ መጻሕፍቲ ባይዱ
九年级学生已具备一定的英语基础，但在语言运用、思维能力和情感态度方面仍有待提高。在本章节的学习中，他们对于环境问题有一定了解，但可能缺乏深入的认识和关注。在语言技能方面，学生的听、说、读、写能力发展不均衡，部分学生在口语表达和写作方面存在困难。
3.教师总结：教师针对学生的反思和分享进行总结，强调环保意识的重要性，鼓励学生在日常生活中采取行动，保护环境。
教学语言引导：“In conclusion, I hope you can remember what we have learned and apply it to your daily life. Remember that it’s time to take action to protect our environment!”
五、作业布置
为了巩固本章节所学知识，培养学生的实践能力和创新思维，特布置以下作业：
1.写作练习：请运用本节课所学的被动语态和重点词汇，写一篇关于环保的短文，内容可包括环保问题的描述、解决措施及个人观点。要求：80-100词，语言准确，表达清晰。
仁爱版九年级英语上册Unit2Topic1SectionB优秀教学案例
（二）问题导向
1.设计一系列问题，引导学生思考和探讨人物描述的重要性，如：为什么我们需要描述人物？描述人物对我们的日常生活有何帮助？
2.提出问题，让学生思考如何准确地使用英语描述人物，如：如何表达一个人的高矮胖瘦？如何描述一个人的眼睛、鼻子和嘴巴？
1.培养学生对英语学习的兴趣和自信心，让他们在学习过程中感受到成就感，从而提高他们的学习积极性。
2.培养学生具备良好的人际交往能力，使他们懂得如何用英语赞美他人，提高他们的综合素质。
3.教育学生关爱身边的人，学会尊重和理解他人，培养他们的同理心和关爱他人的价值观。
4.通过本节课的学习，使学生认识到描述人物的重要性，提高他们在现实生活中观察和描述人物的能力。
2.设计自我评价表，让学生对自己的学习态度、参与度和成果进行评价，培养他们的自我管理能力。
3.教师对学生的学习过程和成果进行评价，关注他们的进步和成长，及时给予反馈和鼓励。
4.组织学生进行同伴评价，让他们互相评价和学习，共同提高英语水平。通过以上教学策略的实施，相信学生能够更好地掌握描述人物的知识和技能，提高英语实际应用能力，并培养良好的人际交往和情感态度。
3.引导学生学会如何询问和回答人物描述相关的问题，如：What does he/she look like? How old is he/she?
4.通过课堂学习和实践活动，提高学生的英语听说读写综合技能，尤其是听力和口语表达能力。
（二）过程与方法
1.采用任务型教学法，让学生在实际语境中练习英语，提高他们的口语表达能力和团队协作能力。
4.小组合作促进互动与交流：本案例中，我组织了学生进行小组合作，让他们共同完成人物描述的任务。通过小组合作，学生能够互相学习、交流和分享，提高了他们的团队合作和交流能力。此外，小组合作还培养了学生的批判性思维和自我反思能力，使他们能够更好地理解和评价他人的观点。
仁爱版九年级英语上册Unit 2 Topic 1 Section A教案
Unit 2 Saving the EarthTopic 1 Section A教案教学目标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.教学重、难点1. Some new words and useful phrases; the present perfect tense2. The present perfect tense教学过程Step 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.Ss…T: 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 Practice1. …怎么样？What about…?2. 看见某人正在做某事see sb doing sth3. 真是一团糟！What a mess!4. 味道很难闻。
九年级英语上册Unit2 Topic1精品学案 整个话题14页 最新仁爱版
Unit2Topic1精品学案SectionA教学目标：1.掌握四会词汇：bee,butterfly,mess,shame,several,pour,waste,villager,destroy, cut down,pollute,goodness.2.进一步复习并巩固现在完成时，能正确使用一般过去式和现在完成时。
3.谈论不同种类的污染，提高环保意识。
教学重点:1.掌握现在完成时的用法。
2.一般过去式和现在完成时的区别。
教学难点：1.掌握现在完成时的用法。
2.短语、词组的用法：1)see sb.doing sth.看见某人正在做某事(强调动作正在进行)2)see sb.do sth.看见某人做某事(强调全过程)3)There be+sb./sth.+doing sth.有某人/某物正在做某事4)pour...into...把......倒入......课前预习：1.熟读本课要求认知和掌握的单词、词组和句型。
2.查阅以下单词短语。
bee________stream_________breathe_________influence_________chairwoman______my goodness__________be harmful to_________waste water________pour into_________3.观察1a的两幅图片，试着用英语说出他们之间的不同。
完成1c.4.预读1a的内容，回答下列的问题：1).What did West Hill look like two years ago?2).What has happened to West Hill?5.再次阅读1c，找出重点词组和短语，朗读并掌握它们。
6.预习指导：1）too many trees太多树too many可数名词复数“太多……”too much不可数名词“太多……”much too adj./adv.“实在太……”①There are_________________people.②Don’t eat______________meat.③The water is_____________dirty.2)have/has gone...已经不复存在，不见了，消失了。
仁爱版九年级英语上Unit2 Topic1 Section A教学设计(1a-1c)教学设计
Unit2 Topic1 Section A(1a)Ⅰ Analysis of the teaching material1.1 The status and functionThis period is the first lesson of Topic 1, Unit 2, Project English 9A. It is based on the topic that Kangkang will go to the West Hill for a picnic with his friends. Bring out the pollution problems in this topic and learn relative words and phrases by comparing the West Hill’s environmental changes now and in the past.1.2 Teaching objectives and demands1.2.1 Knowledge objectives1)The students can maser some new words and expressions as: bee, butterfly, mess, shame, several, pour, pour, waste, see sb./ sth. do sth., see sb./ sth. doing sth.…2)The students can use there be sb./sth. doing sth. properly.1.2.2 Skill objectives1)The students can understand the description of the environmental changes through listening，and distinguish the usages of the Simple Past tense and the Present Perfect tense.1.2.3 Emotional objectivesThe students can realize the seriousess of environmental pollution and know the importance of environmental protection .1.3 Teaching key and difficult points1.3.1 Key points1)Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, pour, see sb./sth. do sth., see sb./sth. doing sth.…2)Sentences: What a shame! / What a mess!The flowers and grass have gone!What has happened here?There be sb../sth. doing sth.There are several factories pouring waste water into the stream.Everything has changed.3)Grammar: differences between the Simple Past tense and the Present Perfect tense.1.3.2 Difficult points1)To use there be sb./sth. doing sth. properly.2)To distinguish see sb./sth. do sth. and see sb./sth. doing sth.Ⅱ Analysis of the studentsStudents in Grade Nine have some cognitive abilities and their own opinions. They are not satisfied with just the content of the textbooks but hope to get more information and widen their eyesight through textbooks. Therefore，we should not teach the knowledge directly but in a way students can take part in learning by themselves and communicate and cooperate with others, in which they can experience, practice and explore by themselves. So teachers should pay more attention to combine the reality of the students and the topic of the textbook to arouse students’ interest to make them find, gain and use the information they need. Meanwhile, teachers should create a open, harmonious and interactive atmosphere in the teaching environment，where students can exchange their opinions, discuss, cooperate and act and make dialogs freely, thus inspiring students’ potentials，getting knowledge through autonomous and cooperative studying, forming their own way of studying English and improving their English study.Ⅲ Analysis of the teaching methodsThe Task-based learning method and the Situational teaching method can increase the class efficiency, arouse the students’ learning interest and make the students learn about teamwork.Ⅲ Learning strategies4.1 Previewing before class is a good way of learning.4.2 Reading the listening material and predicting before listening are good learning habits.4.3 It is helpful to retell the statements in the dialog.Ⅲ Teaching aidsThe multimedia teaching system, chalks, blackboard, some gifts and PPT.Ⅲ Teaching proceduresFive teaching stages：Stage 1 Lead-in (3-5 mins)Stage 2 Pre-listening 10-12mins)Stage 3 While-listening (10-12 mins)Stage 4 Post-listening (10-12 mins)Stage 5 Assigning homework (3-5 mins)Stage 1 Lead-inStep 1 GreetStep 2 learn the new words.Purpose: Students can concentrate on the interesting topic and master the new words .Stage 2 Pre-listeningStep 1 Step 2 learn the new words.Purpose: Students can reading the new words .Stage 3 While-listeningStep 1 Listen to 1a, check the answers in 1b.Step 2 Let students read la aloud and understand the content of 1a.Step 3 listen again and finish the table in 1c independently.. Purpose: Students can master the new words and expressions and consolidate the usage of the Simple Past tense and the Present Perfect tense. Students can know how to express now and the past differently and solve the difficult points. Students’ listening abilities will be improved . What’s more, students will be ready for speaking and retelling.Stage 4 Post-listeningStep 1 Watch a video of 1a, then practice the dialog in groups. Later ask one group to present in classStep 2 Understand the importent phrases.Step 3 Do some related exercises together in class..Purpose: Students can get more detailed information through readingg，consolidate and make good use of what they have learned and develop their abilities of reading and speaking. To help students realize the importance of environmental protection. To prepare for the senior high school entrance examination by combining the oral practice and written exercises.Stage 5 Assigning homeworkStep 1 Sum up the important words, phrases and sentences together.Step 2 Assign the homework.1. Read 1a.2. Finish Section A in your workbook.3. Preview Section B. Purpose: Students will get consolidations by summary. Finish exercises and consolidate the abilities of speaking and using English..Ⅲ Blackboard designⅢ Teaching reflectionThe activities in class cover all the key and difficult points of this lesson, and they are designed as a chain, so the former one will be helpful for the next. The students’ performance in those activities and exercises can tell the teacher how well they have learnt about this lesson, so the teacher can plan the following lessons better. With the help of the various teaching and learning methods, the students’ learning interest and initiatives are aroused. And their ability of using English to communicate is also improved.。
九年级英语上册全一册导学案（打包54套）（新版）仁爱版
九年级英语上册全⼀册导学案（打包54套）（新版）仁爱版The Changing World教师寄语：A waste of their time is slow suicide, wasting people's time is the murder.( 浪费⾃⼰的时间是慢性⾃杀，浪费别⼈的时间是谋财害命。
)Class________ Grade9 Group_________ Name_____________课型：预习+展⽰课Title: Unit 1 The Changing world (正在变化着的世界)Topic 1：Our country has developed rapidly. (我们的国家发展迅速。
)Section: B 1a-1c (P3) 第⼀课时Learning steps (学习过程):⼀、抽测反馈（Check before class）（5’）(我会做)1．⽤括号内单词的正确形式填空。
1) Great changes ________________(take) place in Rita’s hometown.2)Jane ________________( be) to Mount Huang with her parents.3) Kangkang ________________( be ) to an English summer school to improve hisEnglish.4)There __________(go ) the bell.2．根据汉语意思完成句⼦，每空⼀词。
1)天⽓很糟糕，以⾄于我不想出去。
The weather is ______bad ______I don’t want to go out.2)顺便说⼀句，今晚到我家喝⼀杯怎么样？________ ________ ________ , why not have a drink at my home this evening?3)他去伦敦了。
九年级英语上册Unit2Topic1PollutionhascausestoomanyproblemsSectionD教案(新版)仁爱版
Unit 2 Topic 1 Pollution has causes too many problemsSection DⅠ. Material analysis本课是第二单元第一话题的第四课时，主活动是1a和Project。
通过Grammar 来巩固总结一般过去时和现在完成时的区别，通过 Functions来复习重要的表达法。
1a按照“总—分—总”的模式分别介绍了各种污染的成因及危害。
通过完成文章后的表格，训练和提高学生获取信息的能力。
教师还可以利用表格内容，引导学生整合信息复述课文，巩固课文内容。
1b属于同义转换练习。
Project部分培养学生动手动脑的能力，让学生运用收集的信息和所学知识，通过墙报的形式来宣传污染带来的危害，让更多的人关注环境污染，树立环保意识，增强人们的忧患意识和社会责任感。
Ⅱ.Teaching aims1.Knowledge aims：掌握本课的重点词汇和短语。
总结一般过去时和现在完成时的区别；复习本话题的重点表达法。
2.Skill aims:能读懂与环境污染问题有关的文章。
能根据关键词复述课文。
3. Emotional aims: (optional)通过了解各种污染带来的危害，帮助学生树立环保意识，爱护环境，保护地球。
4.Culture awareness: (optional)通过学习，引导学生了解环境污染对人类健康有巨大的危害，不同种类的污染体现在不同的方面。
Ⅲ. The key points and difficult points1. Key points:Words and phrases: coal, create, blood, planet, in many ways, with the development of industry, high blood pressureGrammar: the differences between the simple past and present perfect2. Difficult points：能根据关键词复述课文。
新版仁爱英语九年级上册导学案及练习
Unit 1 Topic 2 The population in developing countriesis growing faster. Section A1.学习与ever, never, yet, just等词连用的现在完成时2.学习So +be/助动词/情态动词+主语的倒装句。
二、【课前】：写出下列动词的过去式及过去分词call _______ _______ watch _______ _______hate _______ _______study _______ _______chat _______ _______ am/is _______ _______are _______ _______ find _______ _______go _______ _______make _______ _______like _______ _______ have _______ _______三、自主预习（1）not…any more_______________（2）get lost______________________（3）lose one’s way______________（4）call sb. up_______________（5）make a telephone call to sb______________（6）hate doing________________（7）bein_______________ （8）department ______________四、【课堂活动】1 现在完成时态（从文中找出以下句子并划在书上）⑴I have _______ been to a shopping center with Kangkang.刚才我和康康去购物中心了⑵I’ve _______ there before, but I don’t want to go there any more.我以前从未去过哪儿，当我以后再也不想去那儿了。
仁爱版 九年级上册Unit2 Topic1 Section B 教学设计
标题：Unit2 Topic1 Section B【教材分析】本教材是义务教育教科书，北京市仁爱教育研究所编著，科学普及出版社出版的2014年7月第1版。
本课是九年级上册Unit 2 Topic1 Section B，主活动是1a和3a。
1a通过Mrs. Zhou 讲述自己的身体状况和生活环境，引出污染对人们的健康和生态环境所产生的危害，同时也道出了污染产生的原因。
1b通过“听—回答问题—再听—核对答案”的模式来训练学生的听力技能。
2与1a形成很好的呼应，通过康康向报社反映西山污染情况的信件，呼吁政府和大众关注环境问题，要求学生掌握词性的转换，强化1a中的语言知识。
3a 和3b通过图片和简介来描述不同种类的污染以及带来的危害。
在学习这些污染的同时，也兼顾了单词的重读，句子的连读、停顿及语调等语言知识。
通过学习本课，引导学生关注环境问题，了解各种污染类别和带来的危害，树立正确的环保意识，了解相关的法律知识，提高法律意识。
【课标分析】（1）《英语课程标准》强调课程从学生的学习兴趣、生活经验和认知水平出发，倡导参与、合作与交流的学习方式和任务型的教学途径，发展学生的综合语言运用能力，使语言学习的过程成为学生形成积极的情感态度、提高思维能力、形成自主学习能力的过程。
（2）四级目标要求学生能用简单的语言表达自己的观点，通过本节课的学习，学生能够掌握一些阅读技能并能就相关话题写出短文，能表达简单的观点。
能尝试使用不同的教育资源，从口头和书面材料中提取信息、扩展知识、解决简单的问题并描述结果。
能在学习中相互帮助，克服困难。
四级语言技能要求学生能引出话题并进行阐述；能在教师的帮助下或根据图片用简单的语言描述自己或他人的经历；能在教师的指导下积极参与小组合作等课堂活动。
（3）激发和培养学生学习英语兴趣，树立学生信心，养成良好的学习习惯和形成有效的学习策略，发展自主学习的能力和合作精神；使学生掌握一定的英语基础知识和阅读技能，形成一定的综合语言运用能力；培养学生的观察、记忆、思维、想象能力和创新精神；帮助学生了解世界，拓展视野，培养爱国主义精神和自我保护意识，形成健康的人生观，为他们的学习和发展打下良好的基础。