仁爱版九年级上册教案.doc

第一课时Topic 2 All these problems are very serious. Section A备课人：杨玉兰Teaching aims and demands 教学目标1.知识与技能Learn some new words and phrases；some useful sentences； Learn the indefinite pronoun and adverb:2.过程与方法 Through listening,speaking, reading and writing,teach the students how to use the English language.3.情感、态度、价值观 Learn the importance of protecting the environment. 4.教学重难点 The use of the indefinite pronoun and adverb:5.教学准备Tape recorder and some pictures. 导学提纲一.简要提示 通过谈论不同种类的污染及危害，提高学生的环保意识。并让学生学习不定代词和不定副词的用法。二.认知与探究知识性问题1. Learn some new words and phrases:as a result, behavior, in the beginning, day by day, die out2. Learn some useful sentences: (1) Oh, my goodness! (2) Look, there are several chemical factories pouring waste water into the stream.3. Learn direct speech and indirect speech:(1)As a result, air pollution has become a serious problem. (2)Humans have come to realize the importance of protecting animals.探究性问题 (1) None of us likes pollution. (2) Dont spit anywhere in public. (3) Everyone should care for wild animals and plant more trees. 三.梳理与反馈1. 梳理：What have you learned from this lesson?2. 反馈: （见后反馈训练）教学过程：Step1.自学导纲新课导入 复习污染的类型及其危害，教师创设一个空气污染的情境，引入本课话题。T:What kind of pollution is it?Ss:It is noise pollution.T:What harm can it cause?S1:It can disturb others and make people feel uncomfortable and unpleasant.S2:It does great harm to peoples hearing. It can even make people sick or deaf.T:Good. How should we solve this problem?S3:Dont always listen to loud pop music.S4:Dont make a loud noice in public.1. 出示导纲，学生自学。Step 2合作互动1.展示1a的图片，导入新课，呈现本课生词和词组。讲解不定代词和不定副词的用法。教育学生必须保护环境。T:It is too dirty and there is too much heavy smoke outside. I cant stand it.T:Do you like the environment here?Ss:No, we dont.T:Why?Ss:Because there is too much smoke. Its a serious air pollution.T:Very good. We should stop burning coal. It is said that China has become the worlds largest producer and user of coal. As a result, air pollution has become a serious problem.T: Now our government has realized the importance of protecting the environment.T: We should do something useful to protect the environment, too.T: Can you tell me what we should do?S1:We shouldnt leave rubbish here and there.S2:Dont spit anywhere in public.S3:Dont walk on grass.S4:T: Well done. We should do everything we can to protect the environment.2. T: Listen to the tape, and answer the questions on the small blackboard. (1)Whats the article about?(2)What should we do and not do to protect the environment?2. Read 1a again, and try to find the indefinite pronouns or adverbs.T:We know we should protect the environment. What should we do? Please use the indefinite pronouns or adverbs in your sentences. S1: None of us should step on the grass.S2: Dont throw rubbish everywhere.S3: Nobody should pick the flowers.S4: Dont spit anywhere.S5: Everyone should care for animals. T: Excellent. We should do everything we can to protect the environment.4.Read this dialog together again, and then try to answer the questions in 1b as quickly as you can. 5.In the past, people killed animals for their meat and skins. Now some kinds of animals are becoming fewer and fewer. And some animals are in danger of dying out completely. Listen to the tape and finish 3. Step 3 导学归纳Sum up: What have you learned from this lesson? Do you have any other questions?Step4 反馈训练见练习册2. Homework:Make some class rules or school rules about protecting environment.板书设计：All these problems are very serious. Section Aas a resultBut the government is doing something useful to protect the environment.something usefulNone of us likes pollution.in the beginningDont spit anywhere in public.day by dayEveryone should care for wild animals and plant more trees.die outWe should do everything we can to protect the environment.第二课时Section B. Teaching aims and demands 教学目标1.知识与技能Learn some new words and phrases；some useful sentences； Learn the indefinite pronoun and adverb:2.过程与方法 Through listening,speaking, reading and writing,teach the students how to use the English language.3.情感、态度、价值观 Learn the importance of protecting the environment. 4.教学重难点 The use of the indefinite pronoun and adverb:. Teaching aids 教具幻灯片/录音机/图片导学提纲一.简要提示 通过谈论不同种类的污染及危害，提高学生的环保意识。并让学生学习不定代词和不定副词的用法。二.认知与探究知识性问题Learn some new words and phrases: Sand cut down change into prevent prevent from aithough2. Learn some useful sentences:1 as a result ,a lot of rich land has changed into desert 2Tress can stop the wind from blowing the earth away 3we still need to work hard to proect the environment探究性问题 (1) None of us likes pollution. (2) Dont spit anywhere in public. (3) Everyone should care for wild animals and plant more trees. 三.梳理与反馈3. 梳理：What have you learned from this lesson?4. 反馈: （见后反馈训练）教学过程：Step1.自学导纲3. 新课导入 通过方格游戏，来复习不定代词和不定副词的用法。(让同桌两人做一个33的方格，将上节课Section A中2的10个不定代词(everyone和everybody任选其一)放入方格中。教师事先准备九道练习题，答案就是方格中的九个不定代词。教师将这些习题逐一呈现出来，同桌两人抢圈答案，谁抢到的多谁获胜。在此过程中，教师每呈现一题核对一次答案。)(供参考)(表格及习题如下：)noneothersomethingeveryone everybodynobodyanythingeverywhereanybodyothers(1) None of us knows how to stop the bad behavior.(2) I knocked on the door but nobody answered.(3) Some of these books are better than others.(4) She was driving the car with one hand and wiping the window with the other.(5) They are beautiful but I am looking for something useful.(6) You cant believe anything she says.(7) Therere 5 000 people living here and almost everyone/everybody has his/her own car.(8) Hes cleverer than anybody I know.(9) Ive looked everywhere but I cant find it.Step 2合作互动通过多媒体呈现1c中的图片，创造情景对话，呈现新单词和词组，学习1a。1. (呈现1c中的图片，学习新词汇。)T:Look at Picture 2 in 1c.T:(指着第二幅图。) Is the scenery beautiful?Ss:Yes.T:OK. Lets look at Picture 4. Is it beautiful?Ss:No.T:What has happened to the forest?Ss:It has gone.T:Yes. People have cut down too many trees.(板书并要求学生掌握。)cut downT:Please look at Picture 1. A lot of earth has been washed away. Why?Ss:Because people have cut down (教师引导学生回答。)T:Thats right. Trees can prevent the water from washing the earth away.(板书并要求学生掌握。) preventfrom=stopfromT:Lets look at Picture 3. Oh, my goodness! The forest has changed into desert.(板书并要求学生掌握短语change into；理解desert。) change intodesertT:Please look at Picture 5. Whats the weather like?Ss:Its bad.T:I agree with you. The wind is blowing strongly with lots of sand. We call it sandstorm.(板书并要求学生掌握sand；了解sandstorm。)sandsandstormT:Is cutting down trees good or bad for us?Ss:Its bad.T:Very good. Its harmful not only to human beings, but also to animals and plants.(板书并要求学生理解。) human beingT:So what can we do to protect the environment? Discuss in groups of four.(给学生两分钟，让他们讨论。)S1:Plant more trees.S2:Stop cutting down trees.S3:T:Good idea. Although we have done a lot to protect the environment, its not enough yet. Lets work harder.(板书并要求学生掌握。) although2. (让学生小组讨论完成1c。)T: Do you know the relations between trees, human beings and sandstorms? Do you know how sandstorms come into being? Now please look at the pictures in 1c and number them. (核对答案。)3. (听1a录音回答问题。)T:Just now we talked about how sandstorms come into being. Now listen to 1a, and answer the questions on the blackboard. (板书)(1) Whats the weather like today?(2) What should we do to protect the environment? (核对答案。)4. (让学生分成小组，读1a，提出不懂之处。小组内讨论，解决各自提出的问题；最后全班共同讨论，解决遗留问题。用此方式可以让学生充分参与到教学过程中来，进行自主探究学习，教师做补充讲解。) T: OK, please work in groups. Find and talk about the language points and difficult points, then Ill ask some students to give their answers to the class. 教师放1a录音，学生表演朗读，完成1b。让学生明白树木在环境保护中的重要性，增强环保意识。1. (让学生跟读1a录音，并注意语音语调。)T:Now, please read after the tape. Pay attention to the pronunciation and intonation. 2. (让学生三人一组表演这个对话，稍后检查活动成果。)T:Please work in groups of three. After a while, Ill ask several groups to act out this dialog. G1: G2: 3. (让学生看1b的图片，完成1b。)T:Lets look at the picture in 1b. Make notes of trees functions according to 1a by yourselves. (学生完成后，让学生一个接一个地把答案读出来。)T:Please read your notes one by one. S1:教师展示一幅水被污染的图片，呈现2中的新词汇。让学生懂得怎样保护和节约水资源。1. T:Now we know that a lot of water can be saved by forests. Why should we save water?Ss:Because it is very important.T:Thats right. We cant live without water. So we should protect water.(展示一条被工厂污染的河的图片，引出2中的新词汇。)T:Look at the picture. Can people drink the water in the river?Ss:No.T:Why?Ss:Because the water is too dirty.T:What causes it?Ss:Factories are pouring waste water into the river.T:Good. What can we do to stop it?S1:Pull down the factories.S2:Write to the newspaper or the government.S3:T:Very good. We can stop factories pouring waste water into rivers by cutting off their water supply. And we can also pass laws against it.(板书并要求学生掌握。) law T: Do you know some other ways of protecting and saving water? For example, remember to turn the tap off when you leave. (板书turn off，要求学生掌握；板书tap，要求学生理解。)tapturn off turn on2. T: Now, read 2 and discuss in groups of four.(小组代表报告，教师板书总结。)综合运用本课的语言项目，探讨水资源保护的相关问题；课后写一篇有关“保护和节约水资源”的短文，进一步增强学生的环保意识。1. (让学生讨论如下问题，为写作做准备。)T:OK. We know water is very important to human beings. Now please talk about the following questions:(1)Why should we save water?(2)Whats the importance of water?(3) How should we save water?(讨论完后汇报结果。教师将关键词板书，以利于学生写作。)2. Homework:(1) Find out more information about water. (2) Step 3 导学归纳Sum up: What have you learned from this lesson? Do you have any other questions?Step4 反馈训练ite a short passage with the title “Protecting and Saving Water”.板书设计：All these problems are very serious. Section Bcut downprevent from =stop from change into deserthuman beingTrees can stop the wind from blowing the earth away.although / but Pass laws against water pollution.turn offRemember to turn the tap off when you leave.第三课时Section CTeaching aims and demands 教学目标1.知识与技能Learn some Learn some new words and phrases:on earth, period, millions of, take away, rise, level, refer to2. Learn some useful sentences: (2) The heatrom the sun cant escap (1) When it rains or when the wind blows, the earth is taken away. fe so the temperature is rising.2.过程与方法 Through listening,speaking, reading and writing,teach the students how to use the English language.3.情感、态度、价值观 Learn the importance of protecting the environment. 4.教学重难. Learn to talk about the harm of pollution:(1) Forests have become deserts, so more and more sorts of animals and plants are disappearing.(2) As a result, many rivers and lakes are now dead. (3) Too much harmful radiation from the sun passes through the hole and reaches the earth directly.(4) It causes the level of the oceans to rise and the climate of the earth to change.5.教学准备Tape recordernd some pictures.一.简要提示 导学提纲导 通过谈论不同种类的污染及危害，提高学生的环保意识。并让学生学习不定代词和不定副词的用法。二.认知与探究知识性问题Learn some Learn some new words and phrases:on earth, period, millions of, take away, rise, level, refer to2. Learn some useful sentences:探究性问题 1Forests have become deserts, so more and more sorts of animals and plants are disappearing.(2) As a result, many rivers and lakes are now dead. (3) Too much harmful radiation from the sun passes through the hole and reaches the earth directly.(4) It causes the level of the oceans to rise and the climate of the earth to cha. 三.梳理与反馈5. 梳理：What have you learned from this lesson?6. 反馈: （见后反馈训练）教学过程：Step1.自学导纲新课导入通过检查作业，引导学生开拓思维，提出保护环境和水资源的具体措施，复习不定代词和副词。为学习新词汇作准备。(检查作业，并找学生汇报结果，引导学生如何保护水资源。)T:How do you protect our environment and save water?S1:Everyone should plant more trees.S2:We should do everything we can to save water.S3:Everybody should know the importance of forests.S4:Pass laws against water pollution.S5:Collect and reuse waste water.Step 2合作互动教师通过日常对话，借助1a中的图片，创设情景，导入新课，呈现新的词汇。1. (教师由日常对话，引出本课话题，呈现部分新词汇。)T:Whats the weather like today?Ss: Its T:As we know, Beijing often has sandstorms in spring. What causes the bad weather?Ss:Cutting down too many trees. (展示1a第二幅图画。)T:Yes. All over the world, people have cut down millions of trees. And trees become fewer and fewer.(板书并要求学生掌握。) millions ofT:Cutting down too many trees causes the bad weather. How can trees affect the weather?S1:They can keep water from running away. S2:They can stop S3:T:Yes. Trees can stop the wind and water from taking the earth away.(板书并要求学生掌握。)take awayT:Anything else?Ss:(允许学生用汉语回答。)树能吸收二氧化碳并释放氧气。T:Thats right. Trees can breathe in carbon dioxide and breathe out oxygen. (板书并要求学生理解。)carbon dioxide: CO2oxygen: O2T:Where does CO2 come from?S4:Animals breathing.S5:Burning oil. For example, cars and buses.T:Yes. They have polluted the air. Carbon dioxide in the air has increased a lot. This has formed a “blanket” around the earth.(展示1a第五幅图。)Please look at the picture. (板书并要求学生理解。)blanketT:The heat from the sun cant escape, so the temperature is rising.(板书并要求学生掌握rise；理解escape。) escaperiseT:This is called “the greenhouse effect”.(板书并要求学生理解。) the greenhouse effectT:Because of the greenhouse effect, what happens to the icebergs(冰川)?Ss:Some parts of them change into water.T:So it causes the level of the oceans to rise.(板书并要求学生掌握。) levelT:(展示1a第4幅图。)Please look at this picture. Around the earth, theres a special kind of oxygen called “ozone”.(板书并要求学生理解。) ozone: O3T:But now air pollution is destroying it and that has made a very big hole in the ozone layer.(板书并要求学生理解。) ozone layerT:Too much harmful radiation from the sun passes through the hole and reaches the earth.(板书并要求学生理解。) radiation2. (让学生快速阅读1a，用所给的词组填空。完成1a。) T: We humans have lived on earth for only 35 000 years, but during this period we have changed our planet a lot in many ways. Now read the passage and then choose a suitable title for each paragraph. (板书并要求学生掌握。)on earth, period(学生完成后与教师核对答案。)3. (教师出示小黑板上的问题，让学生再读一遍课文后回答。)(1) Have we changed our planet in many ways?(2) Have people done good to the earth?(3) Why are more and more sorts of animals and plants disappearing?(4) Are many rivers and lakes dead now?(5) Is ozone important to the earth? Why?(6) Has carbon dioxide in the air increased a lot?(让个别学生回答，完成小黑板上的问题。)让学生再次读1a，完成1b，巩固本课的语言点，培养学生的阅读能力。1. (让学生再次读课文，完成1b。)T: Read the passage again. Finish 1b alone. (板书并让学生猜测Mars和refer to的汉语意思。掌握refer to；了解Mars。) Marsrefer to(学生完成后，师生核对答案。)2. (放录音，学生跟读课文。)T: Now follow the tape to read the passage.3. (教师让学生讨论并找出新的或不懂的语言点，培养学生的自主学习能力。教师解释学生仍有疑惑的知识点并板书。)4. (让学生两人一组讨论，完成下面的表格。)T: How many kinds of pollution are mentioned in the passage? How do they affect our environment? According to 1a, finish the form on the blackboard. (板书)Kind of pollutionEffectStep 3导学归纳使学生了解各种污染对地球环境的影响，培养他们的环保意识。1(1)changein many ways(2)important, destroy, too much, harmful radiation, cause cancer(3)increase a lot, blanket, rise, change(4)serious, do somethingStep 4反馈训练见练习册板书设计：All these problems are very serious. Section Cmillions of When it rains or when the wind blows, the earth is taken away.take awayAs a result, many rivers and lakes are now dead. refer toThe heat from the sun cant escape so the temperature is rising.It causes the level of the oceans to rise and the climate of the earth to change.第四课时SectionDTeaching aims and demands 教学目标1.知识与技能Learn some new words and phrases；some useful sentences；2.过程与方法 Through listening,speaking, reading and writing,teach the students how to use the English language.3.情感、态度、价值观 Learn the importance of protecting the environment. 4.教学重难点 The use of the indefinite pronoun and adverb:5.教学准备Tape recorder and some pict Through listening,speaking, reading and writing,teach the students how to use the English language.3.情感、态度、价值观 Learn the importance of protecting the environment. 4.教学重难点 The use of the indefinite pronoun and adverb5.教学准备Tape recorder and some pictures.T导学提纲一.简要提示 通过谈论不同种类的污染及危害，提高学生的环保意识。并让学生学习不定代词和不定副词的用法。二.认知与探究知识性问题1) This harms the environment (2) At the same time, dealing with (3) Of all the garbage, about 35 percent can be recycled while the rest cant. (4) How shall we deal with it?探究性问题(1) None of us likes pollution.(2) Dont spit anywhere in public.(3) Everyone should care for wild animals and plant more trees.(4) We should do everything we can to protect the environment. 三.梳理与反馈7. 梳理：What have you learned from this lesson?反馈: （见后反馈训练.Step 1自学导纲新课导入师生对话，复习Section C的内容，为学习新词汇作准备。1. (复习讨论Section C的综合探究活动，教师作总结。)2. (教师通过复习上一课的内容为学习新词汇做准备。)T: After learning Section C, we have known that many kinds of pollution affect our environment. How do factories affect our environment?S1: They / Factories have polluted the land and the water. S2: Factories make some rivers and lakes dead now.S3:T: Very good. How do cars and buses affect our environment?S4: They have polluted the air. S5: They have caused noise pollution. S6: T:How does cutting down too many trees affect our environment?S7:Some forests have changed into deserts. S8:More and more different sorts of animals and plants are disappearing. S9:When it rains or when the wind blows, the ea