1、1 仁爱英语九年级上仁爱英语九年级上 Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems. Section D 教学设计教学设计 一、一、教学目标教学目标 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
2、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。 2 三、三、教学过程教学
3、过程 步骤步骤教师活动教师活动学生活动学生活动设计意图设计意图 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
4、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 were going to learn Section D, please turn to page33.
5、 List what they have learnt about pollution in this topic. Ss: Air pollution, light pollution litter,waterpollution,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 3 Pre-reading (10mins) Step 1: Let the Ss scan 1a and choose the best answer on PPT. T: Please read the qu
6、estions first.(PPT) Check the answers Language points: all sorts of=all kinds of Step 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.Whatisthepassage mainly about? 2. _ destroy(s) the soi
7、l. 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 4 While-reading (10mins) Step 1: Let the Ss read 1a and find the main idea of this passage.
8、T: You are right. Pollution is harmful to peoples 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
9、pairs. T: Yes, please read the passage carefully and complete the table on Page 34. You can discuss the answers with your partner. T: Lets check the answers together. Read 1a quickly and find the main idea of this passage. Ss:Theharmofdifferent pollutions. Readthepassageagainand work in pairs to com
10、plete the table on Page 34. 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。 5 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) S1: gas, oil and coal S2: sore eyes and breathing problems S3: litter everywhere, use too
11、 many chemicals S4 Ss: Air pollution, ,soil pollution, noisepollution,light pollution 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 encourag
12、e the Ss to explain them. T:Nowreadthearticlesentenceby sentence, circle the key phrases you think and try to explain them in your own words. Read the article, circle the key points and try to explain them. 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。 6 T: Volunteers? Step 2:
13、 Let the Ss retell the passage accordingtothemindmaponthe 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, lets check your answers tog
14、ether. S1: “including” means “包括” S2:“withtheincreasein 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 harmful 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
15、求学生改写句 子，巩固短语学习。 7 T: Well done!S2:hearing loss S3:go, because of 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
16、past and present perfect tense. Ss finish this part and read them Ss 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 andassigning homework (2mins) HMK: 1.Let the Ss go over what they have learnt about this topic. 2. Summarize the key points on the exercise bo
17、ok. 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 eac
18、h grouptomake 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。 8 . 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 soreeyes& breathing problems unhealthy food burning gas,oil&coal litter&chemicals kindsofillnesses, bad for eyes workinanoisy place for a long time working in strong light losehearing, highblood pressure Lets be greener people!
