仁爱科普版九年级上册 Unit 2 Topic 1 Pollution has caused too many problems. Section D 教案

仁爱英语九年级上Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems.
Section D教学设计
一、教学目标
1.学生能够掌握本课的重点词汇和短语，如coal、create、blood、planet、high blood pressure等。
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.学生能读懂与环境污染问题有关的文章，能根据所给关键词复述课文。
3.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，保护地球并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。
二、教学重难点
1. 教学重点：
Words and phrases: coal, create, blood, planet, in many ways, with the development of industry, high blood pressure
Grammar: the differences between the simple past and present perfect
2. 教学难点：
能根据关键词复述课文。
能够进行同义句转换，用不同的短语表达相同的意思。
三、教学过程
步骤 教师活动 学生活动 设计意图
1 Getting students ready for learning（3mins) Step 1: Let the Ss read the words they have learnt already in this topic.Step 2: Greetings between the teacher and the students. Read the words together. (课前三分钟)Ss: Good morning, teacher!T: Good morning, students! Sit down, please. 学生在学习新课之前朗读复习本话题词汇，有助于本节阅读课的开展。
2 Lead-in (3mins) Let the Ss list what they have learnt about pollution in this topic. T: Wonderful! Now list what you have learnt in this topic and say the names of the pollution…T: Good！Now, today we’re going to learn Section D, please turn to page33. List what they have learnt about pollution in this topic.Ss: Air pollution, light pollution litter, water pollution, soil pollution, noise pollution…Ss:(学生翻到33页) 学生复习污染的种类，为之后阅读文章，获取进一步信息铺垫。
3 Pre-reading (10mins) Step 1: Let the Ss scan 1a and choose the best answer on PPT. T: Please read the questions first.(PPT) Check the answers Language points: all sorts of=all kinds ofStep 2: Let the Ss scan 1a again and circle the new words, and match with its Chinese meanings. Read out the questions before reading the passage.Ss: (Questions) 1. What is the passage mainly about 2. ________ destroy(s) the soil. 3. How do people feel after they work in strong light for a long time Ss: coal 造成create 行星blood 高血压high blood pressure 血planet 煤 让学生在阅读文章前先朗读、了解所给问题，有助于学生更具针对性的寻找答案，进而培养学生们的阅读策略。阅读前解决生词，为正式阅读扫清障碍。
4 While-reading (10mins) Step 1: Let the Ss read 1a and find the main idea of this passage.T: You are right. Pollution is harmful to people’s health. Now, please read 1a as quickly as you can and try to get the main idea of this passage.…T: OK. What is the passage about Step 2: Let the Ss read the passage again and work in pairs to complete the table on Page 34. Then check the answers in pairs.T: Yes, please read the passage carefully and complete the table on Page 34. You can discuss the answers with your partner.…T: Let’s check the answers together.Step 3: Let the Ss find out how many kinds of pollution there are and what the causes and effects are.(教师板书) Read 1a quickly and find the main idea of this passage.…Ss: The harm of different pollutions.Read the passage again and work in pairs to complete the table on Page 34. S1: gas, oil and coalS2: sore eyes and breathing problemsS3: litter everywhere, use too many chemicalsS4…Ss: Air pollution, ,soil pollution, noise pollution, light pollution… 阅读部分采取两个步骤，一是泛读，二是精读。泛读让学生了解文章大意，精读可以让学生注意段落、语句之间的逻辑关系，培养学生写作思维能力。通过反复阅读，学生的脑海已有污染的框架，包括种类、原因、影响，有助于师生共同完成思维导图（板书部分），利于之后学生复述课文。
5 Post-reading (12mins) Step 1: Let the Ss read the article sentence by sentence and find the key points they think. Write them down and encourage the Ss to explain them. T: Now read the article sentence by sentence, circle the key phrases you think and try to explain them in your own words. T: Volunteers Step 2: Let the Ss retell the passage according to the mind map on the blackboard and the table on Page34.Step 3: Let the Ss complete the passage on PPT according to 1a.Step 4: Let the Ss finish 1b quickly.T: Very good. You learnt so well. Now please finish 1b by yourselves.T: OK, let’s check your answers together.T: Well done! Read the article, circle the key points and try to explain them. S1: “including” means “包括” S2: “with the increase in population” means “随着人口的增长”S3: …S1: Air pollution can cause sore eyes…S2: Light pollution is bad for our eyes…S3:Finish the passage on PPT.Finish 1b according to the given sentences.S1:are harmfulS2:hearing loss S3:go, because of 做完阅读练习后，让学生自己划出文章中重要的词组、连词，并自己做出解释。这样可以帮助他们更好的理解所读和所学，并且利于复述课文。复述时可以选择用原文章中的短语，也鼓励学生自由发挥，进行知识的再巩固。该部分要求学生改写句子，巩固短语学习。
6 Grammar&Functions(5mins) Step 1: Distinguish simple past from present perfect tense, and complete this part.Step 2: Finish Functions and read them.Step 3: Let the Ss do some exercise. Ss summarize the differences between simple past and present perfect tense.Ss finish this part and read themSs finish the exercise. 引导学生归纳总结一般过去时与现在完成时的区别，并完成33页表格。复习本话题常用表达及重点短语。
7 Summarizing and assigning homework (2mins) HMK: 1.Let the Ss go over what they have learnt about this topic.2. Summarize the key points on the exercise book. 3. Let the student A in each group make a wall newspaper about pollution.T: We have finished Topic1. Now sum up the key points in this topic on your exercise book. Try to make new sentences if you can. Go over this topic. Summarize the key points on the exercise book. Encourage student A in each group to make a wall newspaper about pollution. 作业布置时，可以有两种或者三种层次，对组内A类生要有更高的要求，鼓励他们仿写一篇关于污染的文章，如果作业太简单，他们会失去挑战的兴趣。对组内的C类生，要降低难度，只要能很好的完成基本任务就行。
Ⅶ. Blackboard design
Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems.Section D
pollutions
Causes
Effects
air pollution
soil pollution
noise
pollution
light pollution
sore eyes & breathing problems
litter&chemicals
unhealthy food
burning gas,oil&coal
kinds of illnesses, bad for eyes
work in a noisy place for a long time
working in strong light
lose hearing, high blood pressure
Let’s be greener people!