《新编英语教程5unit2教学课件.ppt》由会员分享，可在线阅读，更多相关《新编英语教程5unit2教学课件.ppt（62页珍藏版）》请在三一文库上搜索。
1、Unit Two TEXT I Beware the Dirty Seas （当心肮脏的海洋）,I. Pre-reading Questions 1. Suggested Answer (SA): It reminds me of a text about the polluted sea and gets interested in the text and occur great concerns on me to our living environment. Every year there is a lot of sewage poured into the seas. The wa
2、ste of coastal cities, industry and factories poisons, etc, cause the seas to become dirty and cause many diseases which threaten peoples lives. Meanwhile, the,I. Pre-reading Questions,Seas are important tour places, and the common areas of the countries along them. They play very important roles to
3、 the countries and people in the areas, if not treated properly, they will bring great trouble to human beings.,III. Library Work,1. Water pollution is a major element of 20th-century environmental pollution. It includes the accumulation in oceans, lakes, rivers, and streams of physical, chemical, a
4、nd biological substances that are either directly harmful to life or that have dangerous or harmful secondary and long-range effects. The principal sources of water pollution are sewage, industrial waste, garbage and refuse, and agricultural fertilizers, pesticides, and weed killers. The two chief r
5、easons for the contami- nation,III. Library Work,and exacerbation of the problem are industrialization and urbanization. Industrial wastes include dissolved minerals, toxic chemicals, and sediments. Modern industrial processes have polluted water with certain metals, such as lead and mercury, while
6、agricultural practices do so with a variety of pesticides.,III. Library Work,2. Treatment and control of wastes of all kinds is the only answer to water pollution problems. Pollution can be controlled by building sewer systems, sewage treatment plants, and installations to keep fertilizers and insec
7、ticides from entering the water.,IV. Organization of the Text,1. Paragraphs 1 - 4 Introducing the topic: The Mediterranean is the most polluted sea in the world (thesis statement). (1) Causes and consequences of the pollution in general. (2 4),IV. Organization of the Text,2. Paragraphs 5 10 First ma
8、in cause - sewage Improper treatment of sewage by many Mediterranean countries. (5 7) Consequences: contamination of sea water and fish; greater likelihood of disease (8 10),IV. Organization of the Text,3. Paragraphs 11 13 Second main cause - industries Untreated wastes emitted from factories along
9、the coast and from factories located far inland,IV. Organization of the Text,4. Paragraphs 14 15 Other causes of pollution: pesticides, detergents, fertilizers, oil, etc. 5. Paragraphs 16 20 Factors that lead to the severity of the case: narrow and shallow outlet of the Strait of Gibraltar (16);,IV.
10、 Organization of the Text,weak coastal currents and feeble tides (17); long-standing practice of dumping wastes into the seas (18); multiplication of population and increasing number of tourists (19 20) 6. Paragraphs 21 22 Conclusion: Efforts being made to solve the problem,V. Key Points of the Text
11、,Paragraph 1 holiday destination: holiday resort Paragraph 2 waters: the water of the stated rivers, lakes, etc. E.g.: the upper waters of the Thames 泰晤士河上游 South-China Sea waters 中国南海海域 international waters 国际海域,Paragraph 2, sluices its sewage, untreated, into the sea: let out into the sea the wast
12、e materials which have not been treated and not made safe as if through a sluice（水闸）, which is a passage for water,Paragraph 3,to fall victim to the abilities and attitudes : to suffer from mans misuse of his abilities (or mans abilities to destroy) and his attitude of indifference towards environme
13、ntal protection fall victim to: suffer from E.g.: fall victim to a disease / an explosion / ones own avarice,Paragraph 3,The result is that the Mediterranean, which nurtured so many civilizations, is gravely ill - the first of the seas to fall victim to the abilities and attitudes that evolved aroun
14、d it: What happens is that the Mediterranean, the cradle of many ancient cultures, is seriously polluted. It is the first of the seas that has been made to suffer from a situation resulting from development mixed with an irresponsible mentality.,Paragraph 3,stifle: to (cause to) be unable to breathe
15、 comfortably, esp. because of heat and lack of fresh air（使）窒息；抑制 E.g.: be stifled with smoke被烟熏得透不过气来 stifle political freedom扼杀政治自由 Shortages of basic materials stifled economic growth. 基本原料的匮乏抑制了经济发展。 stifle ones laughter (yawn, sobs)忍住笑（呵欠，抽泣）,Paragraph 3,What relationship does the author establi
16、sh in Paragraph 3 between the many civilizations the Mediterranean has nurtured and its pollution? SA: The relationship between the two is that of cause and effect. Because of mans misuse of his abilities and his attitude of indifference towards environment protection, the Mediterranean, home to so
17、many civilizations, is now in jeopardy.,Paragraph 4,endemic: (especially of a disease) found regularly in a particular place 地方性的 E.g.: This is a problem endemic to the Western world. 这是西方世界普遍存在的一个问题。 an endemic species 特有物种 endemic folkways 当地风俗,Paragraph 5,litany: a form of prayer for use in churc
18、h services, recited by a priest with responses from the congregation, i.e., people attending a church service 应答连祷 Here, litany is used in its transferred meaning, referring to the frequent outbreaks of disease. E.g.: commit a litany of crimes 犯一系列的罪 the mournful litany of disease: the deplorable /
19、appalling / dreadful repetitive occurrences of disease,Paragraph 5,What is more, most cities just drop it in straight off the beach; rare indeed are the places like Cannes and Tel Aviv which pipe it even half a mile offshore: Further, while the places such as Cannes and Tel Aviv dispose of their was
20、tes through a pipe stretching out only half a mile from the shore, most cities do not even bother to do that but simply dump their sewage directly into the sea along the coastline.,Paragraph 6,What does the author want to tell his readers in Paragraph 6? SA: He wants to tell his readers in Paragraph
21、 6 that because of mans irresponsibility and indifference towards environmental protection, Greece is rated one of the few cleaner countries of the northern shore.,Paragraph 7,flush out: to clean or drive out by a sudden flow of water; pour out; flood with water to clean out 冲出；泛滥 E.g.: flush a toil
22、et (lavatory) 抽水冲洗马桶（厕所） I was recommended fruit juices to flush nicotine out of the body. 我得到劝告，应多喝果汁以从体内排除尼古丁。,Paragraph 8,are awash with bacteria: have a large amount of bacteria Awash in its literal sense means “be covered in water”. E.g.: After a heavy rain, the streets were awash. rocks awash
23、at high tide 涨潮时被淹没的岩石 The ships deck was awash. 船上的甲板被浪潮冲打。,Paragraph 8,Awash with is used figuratively, meaning “having a large amount of something,” as used in this sentence. The singular form of bacteria is bacterium.,Paragraph 9,lurk: to exist unseen 潜伏；潜藏 E.g.: A snake was lurking in the grass
24、. 一条蛇正潜伏在草丛中。 An even greater danger lurks in the seductive seafood dishes that add so much interest to holiday menus: There is an even greater hidden danger in the attractive seafood dishes that are forever so appealing to those holiday makers.,Paragraph 9,What does the word “seductive” in Paragrap
25、h 9 imply? SA: Seductive comes from the word “seduce”, which is to persuade someone young and without sexual experience to have sex with one. Therefore seductive implies that the seafood dishes are seemingly attractive but threaten with great danger to health.,Paragraph 11,Factories cluster round th
26、e coastline, and even the most modern rarely has proper waste-treatment plant: Factories are set up around the coastline, few of which, including the most sophisticated, have been equipped with a satisfactory system for dealing with their effluents.,Paragraph 14,pesticide: a more general term is ins
27、ecticide Which paragraph(s) is (are) devoted to other sources of pollution apart from sewage and industry? SA: Paragraphs 14 to 15 are devoted to other sources of pollution apart from sewage and industry.,Paragraph 14,What does the word “explosions” in Paragraph 14 mean? SA: It means rapid increase
28、in amount or number.,Paragraph 16,virtually unable to cleanse itself: practically / in effect unable to make itself free from waste materials virtually: practically, in effect, for all practical purposes E.g.: The manager being out of town, Sally is virtually in charge of the work. cleanse: meaning
29、“clean”, is a more elevated word than clean. It is often used figuratively.,Paragraph 16,E.g.: cleanse one of ones sins or wrongdoings cleanse the world from evils to cope with the remorseless rush of pollution: to deal successfully with the sewage, effluents, etc., which pour into the sea threateni
30、ngly and which cannot be stopped,Paragraph 16,cope with: deal successfully with remorseless: threateningly unstoppable E.g.: He was disturbed by the remorseless noise of the engines all night and could not fall asleep. Remorseless is more often used to mean “merciless, pitiless.” E.g.: The man kille
31、d his opponent with remorseless cruelty.,Paragraph 16,What has made the Mediterranean more vulnerable to pollution than other seas in the world? SA: The Mediterranean is landlocked and its weak coastal currents keep sewage and industrial waste close to the shore. Those factors have made the Mediterr
32、anean more vulnerable to pollution than other seas in the world.,Paragraph 18,Explain the use of “of course” at the beginning of Paragraph 18 and that of “but” of Paragraph 19. SA: “Of course” is often followed by “but” to mean “it is at least true that but”. Here the writer uses “ of course” to mea
33、n that it is not a new problem for the people of the Mediterranean to use the sea for their wastes and that environmental pollution has been in existence for a long time, however, pollution is made worse,Paragraph 19,because of the increasing population of inhabitants and visitors. The population tr
34、ebles every summer: The population increases three times every summer. Triple, a synonym of treble, is more often used in American English. What advice for tourists can be inferred from the facts provided by the author in the passage?,Paragraph 19,SA: The possible advice for the Mediterranean touris
35、ts can be: do not swim in the sea and do not eat seafood dishes.,VI. SA to Ex. 1, P. 14, Workbook,1. The Mediterranean has made positive contributions to the development and prosperity of the countries along its shores but the effect produced by the industrialization and modernization of these count
36、ries on the Mediterranean has been negative - they have aggravated the pollution of the sea. 2. Cannes and Tel Aviv. (Paragraph 5),VI. SA to Ex. 1, P. 14, Workbook,3. Even though less than 1/40 of the coastal people of Greece have their sewage properly treated, they are not doing too badly. Other co
37、untries on the northern shore are causing more serious pollution to the sea than Greece 4. 1:7 = x:100 x = 100 / 7 Thus x = 14 (approximately),VI. SA to Ex. 1, P. 14, Workbook,5. attractive and luring but leading to bad consequences 6. Paragraphs 14 and 15 7. rapid increases 8. Refer to Paragraphs 1
38、6 20. 9. “Of course” indicates that the vulnerability of the Mediterranean is not just due to its unique geographical features. The inhabitants round the shores are also to blame. They have for centuries,VI. SA to Ex. 1, P. 14, Workbook,been careless in the protection of their environment. “But” imp
39、lies that the greatly increased population has made a big difference; the sea is much more seriously polluted than before when the population was small.,VI. SA to Ex. 1, P. 14, Workbook,10. Do not eat shellfish unless you are sure that it is fresh and has grown in clean water. Take a good shower aft
40、er a swim to wash off the dirt. Stay as far away as possible from those coastal areas where there are many factories.,VII. SA to Ex. 2, P. 15, Workbook,1. What happens is that the Mediterranean, the cradle of many ancient cultures, is seriously polluted. It is the first of the seas that has been mad
41、e to suffer from a situation resulting from development mixed with an irresponsible mentality.,VII. SA to Ex. 2, P. 15, Workbook,2. Further, while the places such as Cannes and Tel Aviv dispose of their wastes through a pipe stretching out only half a mile from the shore, most cities do not even bot
42、her to do that but simply dump their sewage directly into the sea along the coastline. 3. There is an even bigger hazard hidden in the seafood dishes that are forever so appealing to the holiday-makers.,VII. SA to Ex. 2, P. 15, Workbook,4. Factories are set up around the coastline, few of which, inc
43、luding the most sophisticated, have been equipped with a satisfactory system for dealing with their effluents.,VII. SA to Ex. 3, P. 16, Workbook,1. One mans effort is not enough to cope with such a complicated situation. 2. When do you think the new IT (information technology) regulations will take
44、effect? 3. The chances of winning a prize in a lottery are very slim; perhaps only a one-in-a-hundred chance. 4. It is deplorable that many a youngster has fallen victim to the use of drugs.,VII. SA to Ex. 3, P. 16, Workbook,5. There is virtually no one who is in favor of his proposal. 6. Beware of
45、the swindler with a slick tongue and a smiling face. 7. Dont touch the bag! The explosive in it may blow up at any minute. Your life will be at risk. 8. He looked quite confident about the job, though some doubts lurked in the depth of his mind.,TEXT II An Ugly New Footprint in the Sand （沙滩上的一串丑陋的新足
46、迹）,I. Key Points of the Text Paragraph 1 come by: come across; discover by chance; pass by How do you interpret the title of the article “An Ugly Footprint in the Sand”? Is it related to the “new footprint” referred to in the second sentence of the first paragraph?,Paragraph 1,SA: The strange footpr
47、int is a symbol of environmental pollution; and the authors attitude to this new intrusion - one of strong dislikes - is made clear by the word “ugly”.,Paragraph 2,legions of: also a legion of, meaning “a large group of” or “large groups of” blight: to infect or spoil with a disease of plants that r
48、esults in the drying up and dying of the diseased parts 使（植物）染上枯萎病; here it means “pose a threat to the existence of”,Paragraph 2,delicate: finely made; delightful精美的，精致的 E.g.: porcelains of delicate workmanship 工艺精致的瓷器 whorl: a ring, especially of leaves on a stem （植物）轮；（软体动物的）壳阶，螺纹 goo: sticky mat
49、erial 粘性物质 congeal: to become or cause (a liquid) to become thick or solid 凝固；冻结,Paragraph 2,While environmental pollution is often blamed on population explosion on our globe, Whipple has identified another cause. What is it? How does he support his argument? SA: The need to fuel the technology which mankind has developed to enable it to survive on this planet. Concrete examples are given notably in Paragraphs 2, 9, 10, and 11.,Paragraph 4,despoil: to steal from using forces, especially, in time of war; plunder 抢夺；掠夺 E.g.: despoil somebody