1、Topic 2 All these problems are very serious. Section AThe main activities are 1a and 2. 本课重点活动是 1a 和 2。. Teaching aims and demands 教学目标1. Learn a new word and some phrases:as a result, behavior, in the beginning, day by day, die out2. Learn some useful sentences:(1)As a result, air pollution has bec
2、ome a serious problem.(2)Humans have come to realize the importance of protecting animals.3. Learn the indefinite pronoun and adverb:(1) None of us likes pollution. (2) Dont spit anywhere in public. (3) Everyone should care for wild animals and plant more trees. 4. Learn the importance of protecting
3、 the environment. . Teaching aids 教具有关污染的和学生不文明行为的教学图片/小黑板/录音机/警示标语. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间 :7 分钟)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。1. (教师收集一些有关污染的图片，让学生说出它们分别属于哪种污染，有何危害并提出解决建议。)T:What kind of pollution is it?Ss: It is noise pollution.T:What harm can it cause?S1: It
4、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.(其它污染用同样的方法复习。学生可以在教师帮助下回答。)Step
5、 2 Presentation 第二步 呈现(时间:10 分钟)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。(教师创设一个空气污染的情境，引入本课话题。例如：教师一边拍身上的灰尘，一边咳嗽着走进教室，然后描述。)T: It is too dirty and there is too much heavy smoke outside. I cant stand it.1. (教师展示 1a 的图片，导入新课。)T:Do you like the environment here?Ss: No, we dont.T:Why?Ss: Beca
6、use 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.(板书并要求学生掌握。) as a resultT: Now our government has realized the im
7、portance of protecting the environment.(板书并要求学生理解。) importanceT: We should do something useful to protect the environment, too.(板书并解释 something 是不定代词，其修饰语要放在它后面。);something usefulT: Can you tell me what we should do?S1:We shouldnt leave rubbish here and there.S2:Dont spit anywhere in public.S3:Dont
8、walk on grass.S4:(教师引导学生回答。)T: Well done. We should do everything we can to protect the environment.2. (播放 1a 录音，让学生带着问题去听。)T: Listen to the tape, and answer the questions on the small blackboard.(出示小黑板。)(1)Whats the article about?(2)What should we do and not do to protect the environment?(核对答案。)3.
9、(男女生分角色朗读。)T: Lets read 1a together. BoysKangkang and girlsMichael.4. (让学生再读 1a，试着找出 1a 中的不定代词或不定副词，以及一些疑难点。 )T: Read 1a again, and try to find the indefinite pronouns or adverbs.Step 3 Consolidation 第三步 巩固(时间:8 分钟)阅读 1a，完成 1b，开展分组活动加深对文章的理解，增强学生的环保意识。1. (让学生齐读对话，巩固 1a 并完成 1b。)T: Now, lets read this
10、 dialog together again, and then try to answer the questions in 1b as quickly as you can. (核对答案。)2. (要求学生利用小黑板上的关键词复述 1a。)T: Retell 1a with the key words. Two minutes for preparation.a.the largest producer and userb.a serious problemc.do something usefuld.leave rubbish/spit anywhere/walk on grass/pi
11、ck flowers/care for/plant more treese.do everything(抽查几名同学，检测复述情况。教师作点评。)Step 4 Practice 第四步 练习(时间:15 分钟)教师利用图片作引导，呈现部分生词和词组。让学生独立完成 2，然后听录音，完成 3。并通过练习，分析不定代词和不定副词在句中的作用，总结它们的用法。1. (教师展示多幅有关学生不文明现象的图片。)T: Environment is very important to us. How about the environment of Kangkangs school? Lets look a
12、t the pictures.T: (指着第一幅图中的男生。) Is he polite or impolite?Ss:Impolite.T: Yes. He is rude.(板书并要求学生理解。) rude2. (让学生观察图片，然后分组讨论图中人物的行为是否正确。)T: Are their behaviors good or bad?(板书并要求学生掌握。) behaviorSs:Bad.T: Good. What should we do then?Ss:We should make rules to change the situation. Perhaps its hard for
13、 us to follow the rules in the beginning. But you will get used to them later on and our school will become better and better day by day.T: I agree with you.(板书并要求学生掌握。) in the beginning, day by dayT: Discuss in groups of four, then give a report.(小组选代表汇报。)3. (教师让学生用不定代词或不定副词完成这封信，完成 2。)T: Here is a
14、 letter from Kangkang. Is the environment of his school good or bad? What did he say in the letter? Please read 2. Choose the proper words to fill in the blanks. (教师与学生核对答案。让学生认真地读这封信，分析不定代词和不定副词在句中的作用。引导学生总结出不定代词/副词的用法。 )4. (教师用图片作引导，让学生对新的语法进行训练，达到学以致用的目的。)(展示一系列有标语的图片。)T: We know we should protec
15、t the environment. What should we do? Please use the indefinite pronouns or adverbs in your sentences. (教师可做适当的引导。)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. W
16、e should do everything we can to protect the environment.5. (听录音，完成 3。)T: 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.(板书并要求学生掌握。)die outT: Listen to the tape and finish 3.
17、(教师与学生核对答案，然后解释语言点。)Step 5 Project 第五步 综合探究活动(时间:5 分钟)让学生调查周围的人，有哪些行为对保护环境是不利的，应如何解决，写一份调查报告。然后讨论作为一名中学生应该和不应该做什么，以此制定一份班级或学校规则来增强学生的环保意识。1. T: Make a survey.(让学生调查周围的人，有哪些不良的行为，应如何解决。)Bad behavior Solution2. Homework:Make some class rules or school rules about protecting environment.板书设计：All these
18、problems are very serious. Section Aas a result But the government is doing something useful to protect the environment.something useful None of us likes pollution.in the beginning Dont spit anywhere in public.day by day Everyone should care for wild animals and plant more trees.die out We should do
19、 everything we can to protect the environment.Section BThe main activity is 1a. 本课重点活动是 1a。. Teaching aims and demands 教学目标1. Learn some new words and phrases:sand, cut down, change into, prevent, prevent from, human being, although, law, turn off2. Learn some useful sentences:(1) Trees can stop the
20、 wind from blowing the earth away.(2) Pass laws against water pollution.(3) Remember to turn the tap off when you leave.3. Continue to learn the indefinite pronoun and adverb.4. Learn to talk about pollution and its harm. Teaching aids 教具幻灯片/录音机/图片. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步
21、复习(时间 :5 分钟)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：)none other somethingeveryone everybody nobody anythingeverywhere anybody others(1) None of u
22、s 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
23、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 Presentation 第二步 呈现(时间:15 分钟)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
24、.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 pe
25、ople 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. Wha
26、ts 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 pla
27、nts.(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
28、. (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
29、 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 diff
30、icult points, then Ill ask some students to give their answers to the class. Step 3 Consolidation 第三步 巩固(时间:8 分钟)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。
31、)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: Step 4 Pr
32、actice 第四步 练习(时间:10 分钟)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 pic
33、ture. 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
34、 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。) lawT: 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 tu
35、rn on2. T: Now, read 2 and discuss in groups of four.(小组代表报告，教师板书总结。)Step 5 Project 第五步 综合探究活动(时间:7 分钟)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 w
36、e 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) Write a short passage with the title “Protecting and Saving Water”.板书设计：All these problems are very serious. Section Bcut downprevent from
37、 =stop from change into deserthuman being Trees can stop the wind from blowing the earth away.although / but Pass laws against water pollution.turn off Remember to turn the tap off when you leave.Section CThe main activity is 1a. 本课重点活动是 1a。. Teaching aims and demands 教学目标1. Learn some new words and
38、 phrases:on earth, period, millions of, take away, rise, level, refer to2. Learn some useful sentences:(1) When it rains or when the wind blows, the earth is taken away.(2) The heat from the sun cant escape so the temperature is rising.3. Learn to talk about the harm of pollution:(1) Forests have be
39、come 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 ear
40、th to change.4. Develop the students sense of environmental protection. . Teaching aids 教具图片/小黑板. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间 :4 分钟)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: Eve
41、ryone 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 Presentation 第二步 呈现(时间:18 分钟)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
42、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
43、: 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 ri
44、ght. 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
45、 “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 eff
46、ect, 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 pollut
47、ion 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
48、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)
49、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。)Step 3 Consolidation 第三步 巩固(时间:8 分钟)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
