高二英語(yǔ)上冊(cè)Unit13教案

1、課題SEFCB2Unit13 The water planet課時(shí)7 授課日期 3.8 - 3. 16教學(xué)目標(biāo)1. Talk about water and the ocean2. Practice making suggestions and expressing opinions3. Review Modal Verbs4. Write an explanation paragraph教學(xué)重難點(diǎn)1. Some important words and expressions2. Learn to make suggestions and express opinions3. Grammar

2、Modal Verbs教學(xué)用具1. a recorder2. a blackboard 3. the multimedia4. something special for the experiments (eg. Oil, water, glass, ice cube)背景知識(shí)： Water PollutionWhat is necessary to life on earth. All organisms contain it; some live in it; some drink it. Plants and animals require water that is moderatel

3、y pure, and they cannot survive if their water is loaded with toxic chemicals or harmful microorganisms. If severe, water pollution can kill large numbers of fish, birds, and other animals, in some cases killing all members of a species in an affected area. Pollution makes streams, lakes, and coasta

4、l waters unpleasant to look at, to smell, and to swim in. Fish and shellfish harvested from polluted waters may be unsafe to eat. People who ingest polluted water can become ill, and, with prolonged exposure, may develop cancers or bear children with birth defects. The major water pollutants are che

5、mical, biological, or physical materials that degrade water quality. Pollutants can be classed into eight categoriespetroleum products; pesticides and herbicides; heavy metals; hazardous wastes; excess organic matter; sediment; infectious organisms and thermal pollution- each of which presents its o

6、wn set of hazards. Unit13 The water planetThe First Period Warming-up, Listening and SpeakingTeaching Aims:1. Learn and master the new words and the useful expressions of this partWords: cube, sailor, disadvantages, entertainmentPhrases: come up with, happen toUseful expressions: The water is being

7、used to / for We should / could If we we can It would be better 2. Learn something about water by doing experiment.3. Do some listening4. Improve the students speaking ability by talkingTeaching Important Points:1. Make the students be free to talk about water.2. Improve the students listening abili

8、ty by practice.Teaching Difficult Points:1. How to finish the task of speaking.2. How to improve the students listening ability.Teaching Methods:1. Listening-and-answering activity to help the students go through with the listening material.2. Individual, pair or group work to make every student wor

9、k in class.Teaching Aids:1. the multimedia2. the blackboard3. an empty glass, a bottle of water and a bottle of vegetable oilTeaching Procedures:I. Greetings and lead-in1. I have a riddle. Please guess it.Its very important to all the animals and plants.Its also important to human beings.Its liquid

10、at room temperature.Every day you keep in touch with it.You cant live without it. (a thing)Its water. Today we will talk about water. 2. What you know about water? Maybe you can learn more about water from the following experiments.II. Listening1. You can listen to the famous poems about life on the

11、 ocean. Before you listen, lets learn two phrases first.1. happen to eg. What happened to you last week? If anything happens to the machine, please tell me.2. come up witheg. I hope you can come up with a better plan than this.2. Play the tape for the first time to get the general meaning and write

12、down some key words.3. Play it for the second time, pause for students to write down the information.4. Check the answersIII. SpeakingIn our daily life, water can be used in different ways. Now well talk about the ways in which water can be used. Look at the pictures on Page 18. You can choose one o

13、f the six pictures to discuss the importance of using and protecting our water. When you discuss, you may use the questions to help you.1. How is the water being used?2. Is this a good way to use water?3. Why do we use water in this way?4. Who benefits from using water in this way?5. What are some d

14、isadvantages of using water in this way?IV. Summary Today, were mainly learned something about water by doing experiments, speaking and listening. Besides, weve learnt some new words and phrases. After class, try to remember them and preview the next part - reading part.V. Homework必做作業(yè)1. 語(yǔ)音知識(shí)1. coun

15、terA. shoulderB. doubleC. fountainD. obviously2. featherA. theoryB. thirstyC. gatherD. birth3. combA. burstB. debtC. bucketD. board4. ashamed A. discussedB. agreedC. expectedD. needed5. uselessA. oppositeB. desertC. scoldD. reuse2. 補(bǔ)全對(duì)話(huà)(Bruce and Zhou Lan are talking on the telephone about stamps.)B

16、: Hello. Can I speak to Zhou Lan, please?Z: This is Zhou Lan speaking.B: Hello, Zhou Lan. This is Bruce. Excuse me for ringing you so late in the evening, but Ive just got home.Z: _1_.B: I would like to ask you about some stamps. _2_ You had it when I last saw you.Z: Im afraid I dont have it. I sold

17、 it last week.B: _3_.Z: Im sorry. I didnt know you wanted it. What a shame!B: It doesnt matter. I only decided to buy it today. Its a pity I didnt think of it earlier.Z: _4_.B: Yes, please. That would be so kind of you. Ive been working so hard recently that I haven't had any time for collecting

18、 new stamps.Z: _5_.B: Thanks very much! Bye!Z: Good-bye!A. Ok. Ill ring you if I have any new.B. Do you still have the cock year stamp?C. Can I take a message for you?D. Oh! What a pity!E. Can I help you?F. Do you want me to find one for you?G. Thats OK.EBDFA選作作業(yè)： 倍速The Second Period Pre-reading, re

19、ading and post-readingTeaching Aims:1. Learn and master the following words and phrases:Words: cube, property, range, medium, relatively, dissolve, pure, relationship, mass, float, absorb, bottomPhrases: all the way, that is, addto, mix with, take advantage of, manage to do2. Improve the students re

20、ading ability.3. Enable the students to realize that it is important to protect the water on our planet.Teaching Important Points:1. Improve the students reading ability.2. Master the following phrases: all the way, that is, mix with, take advantage of, manage to doTeaching Difficult Points: How to

21、make the students understand the reading passage better.Teaching Methods:1. Discussion before reading to make the students interested in what they will learn.2. Fast reading to get a general idea of the text.3. Discussion after reading to make students understand what theyve learned better.4. Carefu

22、l reading to get the detailed information in the text.Teaching Aids:1. the multimedia2. the blackboardTeaching Procedures:I. Greetings and lead-inAs we all know, we cant live without water. But do you know what makes water so important to all the living things? Maybe we can get the answer to the que

23、stion after reading the article for today. Before you read, first lets learn the new words and phrases in the passage.II. Pre-reading1. Now please look at the titles in the text below. Do not read the whole text. Pick out the topic of each paragraph and use the structures below to make six questions

24、. 1. What is / are the properties of water?2. What does the earth look like?3. What are different parts of the ocean?4. What can the ocean be compared to?5. How does the special air-conditioner - the ocean work?6. What are some examples of species in the ocean?2. The general idea of the text:The pas

25、sage mainly tells us it is water that makes the ocean so important to all the living things in the world.III. Reading1. Fast readingScan the passage to get some information about water. While you are reading, try to finish the chart in Post-reading on Page 21.PropertyWhat is it?What is it good for?C

26、hemicalstructureEvery water molecule is made up of two hydrogen atoms and one oxygen atom.It is good for the living things in the ocean to absorb the nutrients easily.DensityThe density of pure water is 1000 /, meaning that one cubic meter of water weighs one thousand kilogram.It is good or marine o

27、rganisms to take advantage of the density of water.HeatcapacityHeat capacity is the amount of energy it takes to raise the temperature of a substance one degree centigrade.It is good for earth to keep the temperature steady. 2. Carefully reading Read the passage carefully and find out the answers to

28、 the questions we wrote in the pre-reading activity.(1) The properties of water are chemical structure, salinity density, heat capacity and ocean motion.(2) The earth looks like an ocean planet.(3) There is not any information about the different parts of the ocean.(4) The ocean can be compared to a

29、 great place to live in.(5) Because the ocean can keep the temperature of the earth steady, some students compare the ocean to a special air-conditioning. I think the ocean keeps the temperature of the earth steady by absorbing and releasing heat.(6) Plankton, sharks and whales are examples of speci

30、es in the ocean.IV. Listening and Reading aloud The teacher plays the tape for the students to listen. After listening, the teacher goes among the students and corrects any mistake the students make in pronunciation, stress and intonation.V. Summary Today, we have read a passage about water. As we k

31、now, it is very important to all the living things. So we should do all we can to protect water from being polluted. In addition, try your best to retell the passage in your own words.VI. Homework必做作業(yè)：佳句摘抄：（根據(jù)下列句子的漢語(yǔ)意思，寫(xiě)出對(duì)應(yīng)的英語(yǔ)，與原文一致） 選做作業(yè)： 倍速 The Third Period Language PointsTeaching Aims:1. Review t

32、he important usages of some words2. Explain the usage of new words mentioned in last classTeaching Important Points:1. Make students understand the meaning and usage of some important words and phrases.2. Master the correct sentence patternsTeaching Difficult Points: How to make the students use the

33、 words and phrases correctly in certain situations.Teaching Methods:1. Teachers explanation2. Pair or group work to practice the usageTeaching Aids:1. the multimedia2. the blackboardTeaching Procedures:I. Greetings and lead-inII. Language PointsPart 1. Warming-up1. Cover a glass of water with a piec

34、e of thick paper. 用一張厚紙蓋在一杯水上。（1）cover用作可數(shù)名詞，意為"封面"或"蓋子"。The book needs a new cover. 這本書(shū)需要裝個(gè)新封面。What's on the front cover? 封面上有什么內(nèi)容？（2）cover用作及物動(dòng)詞，后跟名詞或代詞作賓語(yǔ)，其過(guò)去分詞常用作表語(yǔ)，用于be covered with/by結(jié)構(gòu)，表示"被覆蓋"。（用東西）覆蓋 She covered the table with a cloth.占（多大面積） The school cove

35、rs 2,000 mu.涉及，包含 The book covers a wide field.采訪(fǎng)，報(bào)道 Im covering the election campaign.夠付（費(fèi)用） Two hundred dollars can cover her need every month.2. Put one hand on the paper and turn the glass upside down. 把一只手放在紙上，然后把玻璃杯翻轉(zhuǎn)。句中upside down是固定短語(yǔ)，常與動(dòng)詞turn構(gòu)成動(dòng)詞短語(yǔ)。表示"顛倒"、"倒置"或"倒轉(zhuǎn)&q

36、uot;。Be careful not to turn the table upside down. 當(dāng)心別把桌子弄翻了。表示"混亂"或"亂七八糟"。They turned everything in the room upside down and ran away.他們把室內(nèi)的一切弄得亂七八糟然后一跑了之。詞組：turn against 背叛 He turned against his country.turn to 向求助 I turned to him for advice.turn up 出現(xiàn)；到；調(diào)高 He turns up late for

37、 everything.turn out 結(jié)果是 Everything turned out well.3. Pour water and vegetable oil into a glass.（1）流 Blood poured from the wound.（2）（人）蜂擁 Workers poured out of the factories.（3）（雨）傾盆而下 The rain is really pouring down.（4）傾注 He has been pouring money into the film for years but its still in trouble.4

38、. Put an ice cube in each glass.I gave the boy a sugar cube. 塊The cube of 3 is 27. （3 cubed is 27.） 立方Part 2. Listening 5. Work with a partner and see if you can come up with a good, scary story like the one about the mariner. 你與搭檔一起看是否能找到像關(guān)于這個(gè)水手那樣的好的恐怖故事。come up with屬于"動(dòng)詞+副詞+介詞"結(jié)構(gòu)，主要有兩個(gè)用法

39、：表示"追及"或"趕上"，相當(dāng)于catch up with。He has made up his mind to come up with his classmates.他已下定決心，要趕上他的同學(xué)。表示"提出"、"提供"、"產(chǎn)生"或"發(fā)現(xiàn)（解決辦法、答案等）"，等于produce。The airline has come up with a solution to the problem. 航空公司想出辦法來(lái)解決這個(gè)問(wèn)題。詞組：come up to來(lái)到跟前；往上達(dá)到高度So

40、on the waiter came up to him and asked, "Can I help you, sir?"The water came up to my waist. come about 發(fā)生 Tell me how the accident came about?come across 偶然遇到 I came across his name on the e down （物價(jià)）跌落；（風(fēng)俗，習(xí)慣）傳下來(lái) Price didnt come e on 進(jìn)展 How are you coming on with your En

41、glish?come out 出版；結(jié)果是 The book came out last year.How come? 為何會(huì)? How come she hates birds?Part 3. Speaking6. Why do we use water in this way?詞組：give way to 屈從，讓步 The company gave way to the workers demand.in no way 絕不 The two incidents are in no way connected.make ones way 前進(jìn)，行走 They made their way

42、across the river.on ones way 在途中；漸趨于 He is on the way to recovery.in a way 在某種程度上 You are correct in a way.7. Who benefits from using water in this way? vt. 獲益，對(duì)有利Exercise benefits our health. 運(yùn)動(dòng)有益于我們的健康。Your advice benefited me a great deal. 你的建議對(duì)我很有好處。vi. 獲益；得益于 接介詞from/byWe benefit from daily exe

43、rcises. 每天做操對(duì)我們有益。I benefited enormously from my fathers advice.n. 利益；益處be of benefit to 對(duì)有裨益 Eg. Your advice was of great benefit to me.for the benefit of 為了的利益Eg. I get a lot of benefit from learning a foreign language.That experience was of great benefit to me. Eg. We must make efforts to take ex

44、ercise for the benefit of our health.Part 4 Reading8. the properties of water（1） C 特性，性質(zhì)Many plants have medicinal properties.（2） U 財(cái)產(chǎn)The jewels were her personal property.That car is my property; you cant use it without my permission.（3） U 房地產(chǎn)，不動(dòng)產(chǎn)Tianjin is developing and property in the center is

45、becoming more valuable.（4） C （一處）房地產(chǎn)He has a property in the west.9. Marine life is incredibly rich and varied. 海洋中的生物極其豐富多彩。varied是形容詞，意為"各種各樣的"、"多變化的"、"不相同的"、"改變了的"、"雜色的"或"斑駁的"。Almost no one knows his varied life. 幾乎沒(méi)有人知道他多變的經(jīng)歷。Varied opi

46、nions made him hard to make a decision. 各種不同的意見(jiàn)使得他難于做出決定。vary v.改變；變化Opinions varies on that point. 在那一點(diǎn)上意見(jiàn)各不相同。variety n.變化性；多樣；變種；變形；若干不同的事物L(fēng)ife is full of variety. 生活充滿(mǎn)了變化。Last week we went to a variety show. 上星期我們?nèi)タ戳穗s耍演出。詞組：a variety of 種種We have a variety of colours and patterns to choose from.

47、我們有許多顏色和圖案可供選擇。He failed in the experiment for a variety of reasons. 因?yàn)楦鞣N原因，他實(shí)驗(yàn)失敗了。10. Life in the oceans ranges from the tiniest plankton all the way up to giants like sharks and whales.Range vt.排列；歸類(lèi)；常與on, in, along等介詞連用，表示方向或趨勢(shì)。eg. I ranged the books on the shelf according to size.我把書(shū)依大小順序排在書(shū)架上。v

48、i.在范圍內(nèi)變動(dòng)；eg. The road ranges westward from the road. 這條湖由湖邊向西延伸。n.范圍（認(rèn)知、知識(shí)、經(jīng)驗(yàn)或能力方面）不可數(shù)名詞詞組：be out of ones range 某人所不能及的變化（范圍）eg. What is the range of this telescope? 這架望遠(yuǎn)鏡的有效距離是多大？have rages of 山脈；延展的一組或一系列eg. The library has ranges of books in perfect order. 這個(gè)圖書(shū)館的書(shū)一排一排放得井井有條。range from（1）從分布到There

49、 are two hundred boys ranging from seven to fourteen in age.（2）在某一特定的范圍內(nèi)變化The plant ranges from Canada to Mexico.The temperature ranges from ten to thirty degrees.all the way（自始至終）一直，一路上，從遠(yuǎn)道而來(lái)The target is getting all the way up.Its kind of you to come all the way to see me.up to （1）be up to sth: oc

50、cupied or busy with sth.忙于What is he up to now?What have you been up to lately?（2）be up to sb.  應(yīng)由某人負(fù)責(zé)Its up to you to choose where we should go.（3）be up to + n. 勝任；適于He is not up to his work.The product is up to standard.11. The chemical structure of water makes it an excellent medium for life

51、.水的化學(xué)結(jié)構(gòu)使它成為生命的最佳媒介。(1)句中it是人稱(chēng)代詞，指代water，而不是代指the chemical structure of water。(2)medium的用法medium是可數(shù)名詞，復(fù)數(shù)形式為mediums或media，意為"媒體"或"媒介"。Newspapers and magazines are important media for advertising.報(bào)紙和雜志為廣告的重要媒體。medium也可以用作形容詞，意為"中間的"或"中等的"。The boy is of medium hei

52、ght for his age. 這男孩的身高在他這個(gè)年齡中算中等。12. Because water is polar, it can break down, or dissolve, both solids and gases. 破壞 The police broke the door down. 制服 The police tried to break down the prisoners opposition. 機(jī)器損壞 The car broke down.（身體）垮了 His health broke down because he had been working too har

53、d. 崩潰，瓦解；破裂 Talks between the two sides have broken down.She broke down when she heard her husband had been shot. 起化學(xué)變化Chemicals in the body break down our food into useful substances.詞組：break up 一般指物理變化The ice of the river begins to break up at the beginning of March. 分解 A bicycle can be broken dow

54、n into hundreds of parts.13. The water molecule is made up of two hydrogen atoms and one oxygen atom.水分子是由兩個(gè)氫原子和一個(gè)氧原子組成。be made up of的用法be made up of意為"由組成"或"由構(gòu)成"。Our class is made up of 50 students. 我們班級(jí)由50名學(xué)生組成。The medical team is made up of 5 doctors and 8 nurses.醫(yī)療隊(duì)由五位醫(yī)生和八位護(hù)士

55、構(gòu)成。辨析be made up of，be made of與be made frombe made up of意為"由組成"或"由構(gòu)成"，強(qiáng)調(diào)整體由幾部分組成。Our class is made up of sixty students. 我們班由六十名學(xué)生組成。be made of和be made from均可表示"由制成"。be made of表示原材料經(jīng)過(guò)物理變化，制成物品不改變本質(zhì)，還可看出原材料的模樣。Desks and chairs are made of wood. 桌椅是用木頭制造的。be made from表示原材料

56、經(jīng)過(guò)化學(xué)變化，制成的物品改變了本質(zhì)，已看不出原材料的模樣。Paper is made from wood. 紙是用木頭制造的。難點(diǎn)在主動(dòng)語(yǔ)態(tài)中，make常與out of或into構(gòu)成，而不與of或from搭配。Bottles are made of glass. 瓶子是用玻璃制成的。They make bottles out of glass. 他們用玻璃制造瓶子。They make glass into bottles. 他們把玻璃制成瓶子。詞組make up組成；構(gòu)成；虛構(gòu)；化妝；彌補(bǔ)The workers and peasants make up the majority of the

57、population of our country.我國(guó)人口中的大多數(shù)是工人和農(nóng)民。He is expert at making up stories. 他是編故事的行家。I must make up the lessons I've missed. 我一定要把所缺的課補(bǔ)上。14. The chemical structure of water also makes it different from almost all other substances on earth.水的化學(xué)結(jié)構(gòu)也使它與幾乎所有地球上其它的物質(zhì)不同。make作使役動(dòng)詞的用法表示"使"或"讓"時(shí)，可跟含不帶to的不定式、含動(dòng)詞-ing形式或過(guò)去分詞的復(fù)合賓語(yǔ)。What makes you think so? 是什么