unit global warming ReadingPPT課件

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1、Unit 4 Global warmingReading高二人教新課標版選修六高二人教新課標版選修六第1頁/共84頁Pre-reading第2頁/共84頁第3頁/共84頁第4頁/共84頁1. Have you ever seen a greenhouse?is made of glass used for growing plants, especially during cold weather.第5頁/共84頁2. How does the greenhouse work?第6頁/共84頁The air inside was warm because the glass traps(擋住,

2、 吸收) the heat from the sun and keeps it from escaping(逃跑). This makes the greenhouse heat up(熱量上升) and so the plants can grow throughout(在期間) the cold period.第7頁/共84頁3. What are Greenhouse Gases?Methane4Ozone51Carbon dioxide2Water vapor1 1Nitrous oxide3第8頁/共84頁4. Greenhouse EffectGlobal warmingGreen

3、house gases trapped the heat from the sun, which causes the temperature of earth goes up. 第9頁/共84頁Greenhouse effect第10頁/共84頁Green house effect第11頁/共84頁第12頁/共84頁THE EARTH IS BECOMING WARMER BUT DOES IT MATTER? Reading第13頁/共84頁 1) How many paragraphs does the reading 2) Make a division of the text.Rea

4、d the passage quickly (3)text consist of? Please number them.Fast-Reading第14頁/共84頁Main ideas of each part:Introduce a debate over the issue of global warming. raising a questionHow global warming comes about.giving examples,using graphs, explanation 第15頁/共84頁List two different attitudes among scient

5、ists towards global warming.Its up to readers to think and decide whether people should do something about global warming or not.giving examples, making contrastleaving a question第16頁/共84頁Are the risks too great?So can you predict the future of the global warming? 第17頁/共84頁 Who writes this article?S

6、ophie Armstrong of Earth CareWhat rose about one degree Fahrenheit?The temperature of the earthCareful readingIntroduction of global warming. 第18頁/共84頁2. _1. _(2-5)How global warming comes about?the burning of fossil fuels human activityCarbon dioxideMethaneWhat are the Greenhouse gases?1.2.3.Water

7、vapor第19頁/共84頁What are the effects of global warming?v a rise in the sea level v Severe storms, droughts, famines, the spread of diseases, and the disappearance of speciesv Make plants grow fastereffects第20頁/共84頁Read and answer the questions. 1. Who wrote the magazine article? What is the name of th

8、e magazine?2. What are the names of the three scientists mentioned in the article?1. Sophie Armstrong, Earth Care.2. Dr Janice Foster, Charles Keeling, George Hambley.第21頁/共84頁3. What do the three scientists think about global warming? believes it is the burning of more and more fossil fuels that is

9、 resulting in a big increase in carbon dioxide.Dr. Janice FosterGeorge HambleyCharles Keelingthinks the effects of globalm warming could be very serious(嚴重的).thinks global warming will be mild with few bad environmental consequences.第22頁/共84頁The different ideas between Dr. Janice Foster & George Ham

10、bleyDr. Janice Foster George HambleyCarbon dioxide has caused the global temperature to _. An increase of five degrees would be a _ and could be _.More carbon dioxide is a _ thing,which makes crops _ more and will encourage _.go upcatastrophevery seriouspositiveproducea greater range of animals第23頁/

11、共84頁4. What are the two graphs about?The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.第24頁/共84頁from around 315 parts per million to around 370 parts per millionHuge quan

12、tities of extra carbon dioxideFrom 1957 to 19975. What is the main topic of the article?Global warming/ the warming of the earth.第25頁/共84頁1. Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977? A. Dr. Janice Foster. B. Charles Keeling. C. George Hambley. D. Sophie Armstron

13、g.BChoose the best answer. 第26頁/共84頁2. Which of the following is Dr Janice Fosters opinion? A. The result of the temperature increase will be serious. B. The amount of warming is nothing serious. C. We neednt worry about high levels of carbon dioxide. D. Global warming is a natural phenomenon.A第27頁/

14、共84頁3. Which of the following is TRUE according to the text? A. The temperature of the earth increased about one degree Fahrenheit during the 20th century. B. The carbon dioxide content in the air increased by 70 parts per million from 1957 to 1997. C. All scientists accept the data in graph 2 excep

15、t Charles Keeling. D. Janice Foster says that more carbon dioxide will make plants grow faster.A第28頁/共84頁4. The author probably agrees that _A. actually global warming is good for man.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot

16、remains to be found out about the effects of global warming.D第29頁/共84頁True or false?1. The temperature in the last century did not seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans.3. Janice Foster believes that she can measure the future global ri

17、se in temperature.TTF第30頁/共84頁4. The rise in carbon dioxide is causing a steady increase in global warming. 5. George Hambley believes that global warming will do good rather than harm to the earth.6. It is clear what the effects of global warming will be.TTF第31頁/共84頁SummaryTry to talk in general te

18、rms rather than in details.e.g: I learnt that the earth is becoming warmer. I learnt that global warming could have terrible effects on the environment. 第32頁/共84頁A : We shall do something about global warming.B: We shall do nothing about global warming.Debate第33頁/共84頁What we should do to protect our

19、 earth?Discussion:第34頁/共84頁1. Reduce the burning of fossil fuels 2. Plant trees 3. Use bags that can be recycled 第35頁/共84頁1. It is a rapid increase when compared to other natural changes. compare vt. 1)比較; 對照 comparewith表示“把與相比(同類相比)” 如： Compare your answers with those at the back of the book to see

20、 if they are right. 把你的答案同書后面的答案對照一下, 看看是否正確。 Language points 第36頁/共84頁2) 喻為; 比擬compareto 表示“把比做(異類相比, 比喻)” 如： Mans life is often compared do a candle.人生常被比為蠟燭。My handwriting can not be compared with my fathers.我的書法不能與我父親的相比。第37頁/共84頁Shakespeare compared the world to a stage. 莎士比亞把人世比做舞臺。知識拓展知識拓展com

21、pared to /with 與相比, 一般在句子中作狀語。Compared to/with many women, she was indeed very fortunate.第38頁/共84頁come about: 發(fā)生, 造成, 相當(dāng)于happen你能告訴我事情是怎么發(fā)生的嗎？ Can you tell me how the accident came 隨著電的使用, 種種大變化發(fā)生了。With the use of electricity, great changes have come about. come out 出現(xiàn); 傳開; 公開come up 發(fā)生、舉行; 出現(xiàn)2. So

22、how has this come about and does it matter?第39頁/共84頁come about 是不及物短語。如：1) Please tell me how the accident _. I am still in the dark. (2005 江西) A. came by B. came out C. came to D. came aboutD第40頁/共84頁2) Its already 10 oclock. I wonder how it _ that she was two hours late on such a short trip. (湖北20

23、06) A. came over B. came out C. came about D. came up 解析: 已經(jīng)十點鐘了, 我不知道是怎么回事, 這么短的路程她遲到了兩個小時。come over 來訪come out 出來, 出版come up 出現(xiàn)C第41頁/共84頁3. There is no doubt that.doubt 1) 作不可數(shù)名詞作不可數(shù)名詞, 作作“疑惑疑惑; 懷疑懷疑”肯定句中肯定句中doubt多接多接whether (一般不用一般不用if代替代替) 同位語從句。如同位語從句。如: Theres some doubt _ hell keep his promis

24、e. 他會不會信守諾言還難說。他會不會信守諾言還難說。 She had her doubts _ the new book would sell well. 她懷疑新書是否會暢銷。她懷疑新書是否會暢銷。whetherwhether第42頁/共84頁否定句中否定句中doubt多接多接that同位語從句。如同位語從句。如: There is no doubt _ they will ask you for help. 毫無疑問毫無疑問, 他們會請你幫忙的。他們會請你幫忙的。 I have no doubt _ you will succeed. 我毫不懷疑你會成功的。我毫不懷疑你會成功的。2)作及

25、物動詞常用于下列句型中作及物動詞常用于下列句型中, 作作“懷疑懷疑;不能肯定不能肯定; 不大相信不大相信”解解, 一般不用進行時態(tài)。一般不用進行時態(tài)。thatthat第43頁/共84頁用于否定句或疑問句用于否定句或疑問句, 后接后接that引導(dǎo)的賓語引導(dǎo)的賓語從句。如從句。如: I dont doubt _ he is telling the truth. 我毫不懷疑他在講真話。我毫不懷疑他在講真話。 Do you doubt _ he will win the match? 你懷疑他會贏這場比賽嗎你懷疑他會贏這場比賽嗎? 用于肯定句用于肯定句, 一般接一般接whether 或或if引導(dǎo)的賓語

26、引導(dǎo)的賓語從句。從句。 如如: I doubt _ we will make a profit out of it. 我認為我們不可能從此事中獲利。我認為我們不可能從此事中獲利。 We doubt _ she will be persuaded. 我們不知道她會不會被說服。我們不知道她會不會被說服。 whether/ifwhether/ifthatthat第44頁/共84頁考點1 There is no doubt that .是固定句型, 意為“毫無疑問”, that引導(dǎo)的是同位語從句，用來進一步補充說明doubt的具體內(nèi)容。如：Some researchers believe that t

27、here is no doubt _ a cure for AIDS will be found. (廣東2005)A. which B. that C. what D. whetherB第45頁/共84頁考點2 it is . that .構(gòu)成強調(diào)句型, 強調(diào)的是主語human activity。強調(diào)句型可強調(diào)主語、賓語或狀語。如：It is not who is right but what is right _ is of importance. (重慶2007)A. which B. itC. that D. this 解析: 將it is和that去掉后, 此句成為Not who i

28、s right but what is right is of importance, 句子完整, 故此題是一個強調(diào)句型。B第46頁/共84頁I dont mind her criticizing me, but _ is how she does it that I object to. (江西2007)A. itB. thatC. this D. which 解析:去掉it is和that后, 本句相當(dāng)于., but I object to how she does it, 是個完整的句子。故此句是it強調(diào)句型, 被強調(diào)部分是賓語從句。A第47頁/共84頁4. phenomenon n.

29、現(xiàn)象現(xiàn)象; 奇跡奇跡; 罕見的人才罕見的人才或事物或事物eg: 雨雪是天氣現(xiàn)象。雨雪是天氣現(xiàn)象。Rain and snow are phenomena of the weather.eg: 不應(yīng)該簡單地視未婚媽媽為一種社會現(xiàn)象。不應(yīng)該簡單地視未婚媽媽為一種社會現(xiàn)象。Unmarried mothers should not be regarded simply _.eg: 貝多芬是音樂家中的天才。貝多芬是音樂家中的天才。Beethoven was _ among musicians.pl. phenomena as a social phenomenona phenomenon第48頁/共84頁

30、5. subscribe to1) 同意同意; 支持支持I dont subscribe to such views. 我不同意這樣的觀點。我不同意這樣的觀點。 2) 對對.捐款捐款Many people subscribed liberally to the relief fund. 許多人為救災(zāi)基金慷慨解囊。許多人為救災(zāi)基金慷慨解囊。 第49頁/共84頁3) (在文件等下面在文件等下面)簽名簽名He subscribed his name to a petition.他在請愿書上簽名。他在請愿書上簽名。4) 訂閱訂閱(書籍等書籍等)He subscribed to Readers Dige

31、st.他訂閱他訂閱讀者文摘讀者文摘。第50頁/共84頁6. Without the green house effect, the earth would be about thirty-three degrees Celsius cooler than it is. 如果沒有溫室效應(yīng)如果沒有溫室效應(yīng), 地球會比現(xiàn)在冷地球會比現(xiàn)在冷33。 這是一個含蓄虛擬條件句。這是一個含蓄虛擬條件句。 有時假設(shè)的情況并不以條件從句形式表示有時假設(shè)的情況并不以條件從句形式表示 出來出來, 而是通過一個介詞短語或其他方式而是通過一個介詞短語或其他方式 表示。常用的詞或短語有表示。常用的詞或短語有: withou

32、t, but for, but that, otherwise, or, but等。等。 第51頁/共84頁e.g. Without your help ( = If we had not had your help), we could not have succeeded要是沒有你的幫助要是沒有你的幫助, 我們是不會成功的。我們是不會成功的。He felt very tired yesterday, or he wouldhave attended the party他昨天很累他昨天很累, 不然他就參加那個聚會了。不然他就參加那個聚會了。第52頁/共84頁But for electrici

33、ty (= If there were no electricity), there would be no modem industry 要是沒有電要是沒有電, 就不會有現(xiàn)代工業(yè)。就不會有現(xiàn)代工業(yè)。He was having a meeting with his students, otherwise he would have come. 他當(dāng)時正與他的學(xué)生進行討論他當(dāng)時正與他的學(xué)生進行討論, 否則否則的話他就來幫我們了。的話他就來幫我們了。 第53頁/共84頁7. quantity n. 數(shù)量數(shù)量; 量量“a large/small quantity of +不可數(shù)名詞不可數(shù)名詞和可數(shù)名

34、詞復(fù)數(shù)和可數(shù)名詞復(fù)數(shù)”表示表示“大量的大量的/少量的少量的”, 也可以用也可以用“l(fā)arge/small quantities of +不可數(shù)名詞或可數(shù)名詞復(fù)數(shù)不可數(shù)名詞或可數(shù)名詞復(fù)數(shù)”來表達。來表達。用法歸納用法歸納: a quantity of 大量的大量的quantities of 大量的大量的There is a small quantity of water left in the bottle. 瓶子里還剩下少量的水。瓶子里還剩下少量的水。She has quantities of good clothes.她有許多好衣服。她有許多好衣服。 第54頁/共84頁特別提示特別提示a q

35、uantity of 后可接不可數(shù)名詞或后可接不可數(shù)名詞或可數(shù)名詞的復(fù)數(shù)形式。當(dāng)它修飾名詞可數(shù)名詞的復(fù)數(shù)形式。當(dāng)它修飾名詞作主語時作主語時, 謂語名詞用單數(shù)謂語名詞用單數(shù); 而而quantities of后同樣可接不可數(shù)名詞后同樣可接不可數(shù)名詞或可數(shù)名詞的復(fù)數(shù)形式或可數(shù)名詞的復(fù)數(shù)形式, 但謂語用復(fù)數(shù)。但謂語用復(fù)數(shù)。amounts of + 不可數(shù)名詞充當(dāng)句子不可數(shù)名詞充當(dāng)句子的主語時的主語時, 其謂語動詞用復(fù)數(shù)。其謂語動詞用復(fù)數(shù)。第55頁/共84頁8. go up 1) 上升上升Prices have gone up again. 物價又上漲了。物價又上漲了。 2) 被建造起來被建造起來New

36、 factories are going up everywhere. 到處在興建新工廠。到處在興建新工廠。 3) 被焚毀被焚毀The whole building went up in flames. 整幢樓被焚毀了。整幢樓被焚毀了。 第56頁/共84頁9. It was a scientist called Charles Keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. 是一位名叫查爾斯奎林的科學(xué)家把1957至1997年期間

37、大氣層中二氧化碳的含量作了精確的統(tǒng)計。解析: 該句是一個強調(diào)句。第57頁/共84頁amount of 習(xí)慣用語習(xí)慣用語:an amount of 相當(dāng)數(shù)量的相當(dāng)數(shù)量的; 一些一些any amount (of) 任何數(shù)量任何數(shù)量(的的); 大量大量(的的)be of little amount 不重要不重要; 無價值無價值 amount n. 數(shù)量數(shù)量 large amounts of money 大量的金錢大量的金錢 In an invoice the amount of money should be written both in words and in figures.發(fā)票上的錢數(shù)要用

38、字和數(shù)碼寫出來。發(fā)票上的錢數(shù)要用字和數(shù)碼寫出來。第58頁/共84頁10. result in 結(jié)果結(jié)果; 致使致使; 導(dǎo)致導(dǎo)致主語主語: in 的賓語的賓語:起因起因結(jié)果結(jié)果Acting before thinking always results _ failure.做事不先考慮總會導(dǎo)致失敗。做事不先考慮總會導(dǎo)致失敗。The accident resulted _ the death of two people.這場意外事故造成兩人死亡。這場意外事故造成兩人死亡。inin第59頁/共84頁result from 起于起于, 由于由于, 由由引起引起主語：主語： from 的賓語：的賓語：Hi

39、s sickness resulted _ eating too much. 起因起因結(jié)果結(jié)果from第60頁/共84頁causebring about lead to1)cause 表示的因果關(guān)系比較直接表示的因果關(guān)系比較直接Smoking can cause lung cancer.My car has caused me a lot of trouble. 2) bring about 表示的因果關(guān)系不那么表示的因果關(guān)系不那么直接直接The war brought about a reduction in the birth rate.3) lead to 相當(dāng)于相當(dāng)于causeThe

40、strike could lead to a loss of jobs.第61頁/共84頁11. On the other hand, there are those, like George Hambley, who are opposed to this view, believe that we should not worry about high levels of carbon dioxide in the air.在另一方面, 還有一些人, 對這一觀點持反對態(tài)度, 像科學(xué)家喬治 漢布利, 他們認為我們不必擔(dān)心空氣中高含量的二氧化碳。第62頁/共84頁分析: 該句是一個主從復(fù)合句。

41、主句為there are those, like scientist George Hambley 作句子的插入語, who引導(dǎo)的定語從句修飾those, 且在該定語從句中其謂語動詞believe又帶有that引導(dǎo)的賓語從句。句子的主要部分可以表示為: . there are those who believe that . 第63頁/共84頁on the other hand: 另一方面另一方面Id like to eat out, but on the other hand I should be trying to save money.I want to go to the party

42、, but on the other hand I ought to be studying. 我想去參加聚會我想去參加聚會, 但從另一方面來說但從另一方面來說, 我應(yīng)該留下來學(xué)習(xí)。我應(yīng)該留下來學(xué)習(xí)。第64頁/共84頁12. oppose vt. 反對反對; 反抗反抗 如：如：I am opposed to going shopping with others.我反對與他人一起外出購物。我反對與他人一起外出購物。He is strongly opposed to the plan.他強烈反對這一計劃。他強烈反對這一計劃。oppose sth./doing sth. 反對某事反對某事/做某事做某

43、事be opposed to sth./doing sth. 反對某事反對某事/做某事做某事oppose后若接動詞后若接動詞, 則用其動名詞形式，則用其動名詞形式，而不用動詞不定式。而不用動詞不定式。第65頁/共84頁oppose doing sth.= object to doing sth. 反對做某事反對做某事The young man opposed/objected to turning to his parents for help.這個年輕人反對向他的父母求助。這個年輕人反對向他的父母求助。易混辨析易混辨析oppose (尤指采取行動尤指采取行動)反對反對, 反抗反抗(某事某事)

44、be opposed to 一方面相當(dāng)于一方面相當(dāng)于be against“反對反對”; 另一方面相當(dāng)于另一方面相當(dāng)于be opposite to“相對相對”。第66頁/共84頁13. consequence n. 結(jié)果, 后果, 影響in consequence 因此as a consequence 結(jié)果as a consequence of 由于的結(jié)果nIt rained yesterday and in consequence the match was canceled. nHe studied hard, and in consequence he passed the exam.第6

45、7頁/共84頁 +n.14. state +that從句 +wh-從句；他已公開聲明他會支持那項政策。他已公開聲明他會支持那項政策。He has publicly _ _ _ for the policy.stated his support我聽見那位官員說不接納兒童。我聽見那位官員說不接納兒童。I heard the official state that they would not accept children.合同清楚地敘述了那項工作應(yīng)在何時完成。合同清楚地敘述了那項工作應(yīng)在何時完成。The contract stated when the work should be finish

46、ed.v. 陳述陳述, 聲明；聲明； n. 狀況狀況, 情況情況; 國家；國家；第68頁/共84頁15. range v. 排列排列, 使成行使成行; 偏袒偏袒, 站在站在的方面的方面n. 范圍范圍(尤指從尤指從到到各種種類各種種類, 可供選擇的可供選擇的范圍等范圍等, 可加不定冠詞可加不定冠詞); 排列排列 beyond the range of 超越超越的范圍的范圍out of ones range 某人達不到的某人達不到的這家商店商品品種多。這家商店商品品種多。The shop keeps _.常可用于?？捎糜? 1) 被動結(jié)構(gòu)被動結(jié)構(gòu) 2) range oneself；3) range

47、 from to / betweenand 從從到到不等不等a wide range of goods第69頁/共84頁老師令其學(xué)生沿著小徑排隊。老師令其學(xué)生沿著小徑排隊。The teacher _ along the path.溫度在溫度在15度到度到35度之間。度之間。The temperature _.我們應(yīng)當(dāng)列身于法律與秩序的一邊。我們應(yīng)當(dāng)列身于法律與秩序的一邊。We should _ on the side of law and order.ranged his studentsranges from 15 to 35 degreesrange ourselves第70頁/共84頁1

48、6. even if /though: 即使即使; 雖然雖然He will come on time even though it rains. 即使下雨即使下雨, 他還是會準時來的。他還是會準時來的。 I wouldnt tell you even if I knew. Even if she survives, shell never fully recover.Even though hes 24 now, hes still like a little child.I can still remember, even though it was so long ago.第71頁/共84

49、頁1. A large q_ of rice is badly needed here.2. Students are from a wide r_ of backgrounds.3. She studied hard, and in c_ she passed the exam.4. The park attracts 4 million visitors p_ year.uantityangeonsequenceerI. 根據(jù)句意及所給單詞的首字母或漢語 提示, 寫出各單詞的正確形式。第72頁/共84頁5. What sort of _ (燃料) do these machines nee

50、d?6. The _ (數(shù)據(jù)) is still being analysed. So dont be so worried.7. The earthquake was a terrible _ (大災(zāi)難).8. A rainbow is a natural _ (現(xiàn)象) especially after a heavy rain.10. The _ (曲線圖) of export indicates a new success of the company.graphfuel data catastrophephenomenon第73頁/共84頁II. 根據(jù)句意, 選擇適當(dāng)?shù)膯卧~或短語填空1

51、. climate; weathera. Its very difficult for her to get used to the dry and cold _ there.b. How we wish the sunny _ could keep up for another several days!2. come about; come acrossa. Ive never _ anyone quite like her before.b. Please tell me how the accident _. I am still in the dark.climateweatherc

52、ome acrosscame about第74頁/共84頁3. quantity; quality a. Much of the land was of poor _.b. Buy vegetables in small _, for your immediate use.4. result in; result froma. The accident _ the death of three people.b. His failure _ not working hard enough.qualityquantitiesresulted inresulted from第75頁/共84頁5.

53、glance; glare; starea. He _ angrily at her across the dinner table.b. She _ at the page for several minutes, trying to understand.c. She _ round the room before she left.glaredstaredglanced第76頁/共84頁1. It was very late, but they went on working.It was very late, but they _ _ working.2. We dont doubt

54、that he can do a good job._ _ _ _ _ he can do a good job.3. Their carelessness led to the failure.Their carelessness _ _ the failure.kept onThere is no doubt thatresulted inIII. 每空一詞, 使兩個句子的意思相同。第77頁/共84頁4. I dont know how the accident happened.I dont know how the accident _ _.5. The factory turns o

55、ut a large number of paper products.The factory turns out _ _ _ _ paper products.6. Although they raise the price, hes going to buy the farm.Hes going to buy the farm _ _ they raise the price.even if / thoughcame aboutlarge quantities of/ a lot of第78頁/共84頁IV. 翻譯1. 他的粗魯導(dǎo)致了孩子和他的爭吵。 (result in)2. 他們不知道

56、這個變化是怎樣產(chǎn)生的。 (come about)They didnt know how the change had come about.His rudeness resulted in the childs quarreling with him.第79頁/共84頁3. 他以優(yōu)質(zhì)的服務(wù)使生意逐步興隆起來。 (build up)4. 鄰居們讓他們停止制造噪音, 但他們 仍然繼續(xù)。(keep on)The neighbours asked them to stop making a noise, but they still kept on.He built up his business b

57、y good service.第80頁/共84頁5. 不用擔(dān)心, 我們已經(jīng)儲藏了很多食物。 (quantities of)6. 那個老人瞥了一下他的手表, 然后看了 看天空。(glance at)The old man glanced at his watch and then looked at the sky.Dont worry. We have stored quantities of food already.第81頁/共84頁Homework1. Read the passage again and review the new words and expressions.2. Write a passage about global warming.第82頁/共84頁第83頁/共84頁感謝您的觀看。第84頁/共84頁