新世纪新视野高职高专英语（电子教案）Unit3 Environment

新世纪新视野高职高专英语（电子 教案 中职数学基础模块教案 下载北师大版¥1.2次方程的根与系数的关系的教案关于坚持的教案初中数学教案下载电子教案下载 ）Unit3 Environment 新世纪新视野高职高专英语(电子教案)Unit3 Environment Master the key words and structures, and learn something Teaching about the rainforest. The students are required to Objective understand the importance of environmental protection. absorb atmosphere contain economic establish greenhouse impression process Vocabulary purchase rainforest resource solution vary speed up no more than carbon dioxide Key Points It is the modern world that has speeded up„ Structure It is people themselves who are the biggest cause„ Using word parts to find out the meanings of words Skills Reading a chart Layout of business lettersLead In Activity; Study of the Text; Study of Words and Teaching Phrases; Study of Read More; Study of Practical Reading; Procedures Study of Practical WritingLead In 1. Paradise Lost 2. Rainforest 3. Christopher Columbus 1451-1506 4. Amazon River 5. Topic-related Words and PhrasesText Study 1Global Reading 2Detailed ReadingGlobal Reading 1.Questions and Answers 2.Text Analysis Consolidation 1Dictation 2Words and Phrases 3Listening Practice 4Group DiscussionLanguage Application 1 Practical Writing 2 Practical ReadingDrills for PRETCO Test 1Listening Comprehension 2Vocabulary and Structure 3Translation Paradise Lost The masterpiece of the English poet John Milton 1608 - 1674 and one of the greatest poems in world literature. It was published in 1667 and tells the story of Satan’s 撒旦 rebellion against God and his expulsion from heaven and the subsequent temptation and expulsion of Adam and Eve from the Garden of Eden.Paradise Lost Temptation of Adam and Eve by Satan and Satan’s expulsion from Heaven their expulsion from the Garden of Eden RainforestWoodland is characterized by lush vegetation and heavy rainfall. Rainforests are the world ’ s most biologically diverse ecosystems. Although they cover less than 10 percent of the Earth’s surface, tropical rainforests provide habitat for 50 to 90 percent of the world’s plant and animal species. Tropical rain- forests are called the “jewel of the Earth,” the “Earth’s lungs,” and the “world’s largest pharmacy” because of the large amount of natural medicines discovered there The largest tropical rainforests exist in South America ’s Amazon basin the Amazon Rainforest, in the equatorial portions of the Democratic Republic of Congo, and in much of IndonesiaTemperate rainforests, dominated by only a few species of trees, are found along the Pacific coast of North America from Alaska through Washington state, in the former Yugoslavia, and in parts of JapanRainforest Tropical Temperate rainforest rainforest Distribution of tropical rainforests Christopher Columbus 1451-1506 Italian Spanish navigator who sailed across the Atlantic Ocean in 1492, in an attempt to find a shorter route to India. He made a total of four trips to the Caribbean and South America during the years 1492-1504. He achieved fame by making landfall in the Americas, which he later called the “ New World. ” The arrival of his ships in the Western Hemisphere was one of the pivotal events in world history. It opened up a new world for Europeans and initiated the spread of Western civilization to a new hemisphereChristopher Columbus 1451-1506 Four Voyages of Christopher ColumbusAmazon River The Amazon River is the largest river in the world. With its more than 1,000 tributaries, the Amazon River network encompasses almost half of South America. The Amazon itself is 6,516 km 4,050 miles long. Only the Nile River is longer. Its total drainage basin is nearly as large as the entire United States, with roughly half in Brazil and the rest in Peru, Ecuador, Bolivia, and Venezuela. The Amazon Basin has a very warm and humid climate. It rains almost 200 days of the year, and the annual rainfall exceeds 2,000 mm 80 inches. The Amazon has by far the greatest total flow of any river, carrying more water than the Mississippi, Nile, and Yangtze Rivers combinedAmazon River the Amazon BasinTopic-related Words and Phrases deforestation: the removal of the forest by humans chiefly as a result of clearing land for commercial and industrial development. The rate of clearance has been increasing rapidlyEstimates of deforestation of tropical forest for the 1990s range from ca. 55,630 km? to ca. 120,000 km? each year. At this rate, all tropical forests may be gone in less than 80 yearsDeforestation is often cited as one of the major causes of the enhanced greenhouse effect, the promotion of soil erosion and the destruction of the habitats that support biological diversity Topic-related Words and Phrases Satellite images of progressive deforestation in 1975, 1986, 1992 from left to right.Topic-related Words and Phrases ecology: the branch of science that studies the distribution and abundance of living organisms, and the interactions between organisms and their physical and biological environment. The physical environment includes light and heat or solar radiation, moisture, wind, oxygen, carbon dioxide, nutrients in soil, water, and atmosphere. The biological environment includes organisms of the same kind as well as other plants and animals Topic-related Words and Phrases El Ni?o: Originally recognized by fishermen off the coast of South America Peru and Ecuador, El Nio is the warming of the surface waters of the eastern equatorial Pacific Ocean that occurs at irregular intervals of 2-7 years, usually lasting 1-2 years. Because this condition often occurs around Christmas, local fishermen named it El Ni ?o Spanish for boy child, referring to the Child, Jesus. In most years the warming lasts only a few weeks or a month. However, when El Ni?o conditions last for many months, more extensive ocean warming occurs and economic results can be disastrous. Recent El Ni?os have occurred in 1986-1987, 1991-1992, 1993, 1994, 1997-1998, 2002- 2003, and a new El Ni?o has been in effect since September 2004 Topic-related Words and Phrases Chart of abnormal ocean surface temperatures [?C] observed in December 1997 global warming: a term used to describe an increase, over a period of time, of the average temperature of Earth ’ s atmosphere. Global warming theories attempt to account for the rise in average global temperatures since the late 19th century about 0.6 ? C and assess the extent to which the effects are due to human causes. The most common global warming theories attribute temperature increases to increases in the greenhouse effect caused primarily by anthropogenic human-generated carbon dioxide and to possible increases in solar activity Topic-related Words and Phrases The instrumental record of global average temperatures as compiled by the Climatic Research Unit of the University of East Anglia and the Hadley Centre of the UK Meteorological Office. ozone: pale blue, highly poisonous gas with a strong odor. Ozone is considered a pollutant at ground level, but the ozone layer of the upper atmosphere protects life on Earth from the Sun ’ s harmful ultraviolet radiation. Ozone is one of three forms, called allotropes, of the element oxygen. Ozone is triatomic, meaning that it has three atoms in each molecule formula O . Ordinary, or diatomic, oxygen 3 O is more stable than ozone and accounts for the bulk of oxygen in 2 the atmosphere. Electrical sparks and ultraviolet light can cause ordinary oxygen to form ozone. The presence of ozone sometimes causes a detectable odor near electrical outlets.Questions and Answers Directions: Skim the paragraphs for answers to the followingquestions. Paragraph 1: Question: How did Columbus think of the rainforest? Answer: He thought it was most beautiful and quite different from that in Europe, with flowers and fruits, and little birds singing sweetly. Paragraph 2: Question: What is special about Columbus’ description of the rainforest? Answer: His description was the first known written one about the rainforest.Paragraph 3: Question: What are the oldest communities of living things on the Earth? Answer: In the author’s view, the rainforests are the oldest. Paragraph 4: What do you know about the rainforests in the Question: world todayAnswer: The rainforests cover no more than seven percent of the earth’s surface today.Paragraph 5: Question: What is “the secondary growth”? Answer: “ The secondary growth ” refers to the new growth after the original growth has been destroyed. Paragraph 6: Question: How does the modern world speed up the process of destructionAnswer: Modern technology doubtlessly increases efficiency when people try to cut down trees. Paragraph 7: Question: Who is to blame for the destruction of rainforests? Answer: It is human beings that are to blame for such destruction. Paragraph 8: Question: How does the land become desert according to the passage? Answer: When the trees are cut down, the soil washes away easily.Paragraph 9: Question: What caused the problem mentioned in this passage? Answer: The problem is mainly caused by the governments that have to pay their debts, the settlers who need money to feed their families, and the companies that want to make profits.Text Analysis Paragraphs Main Ideas Columbus’ first description of rainforests. 1 Although beautiful, rainforests are fragile. 2 3 The city of London was once covered by rainforests. 4 Today rainforests only exist in a small part of the world. The effect of the clearing of rainforests. 5 Modern technology speeds up the destruction. 6 Human beings are the biggest cause of destruction. 7 The negative effect on land, climate, global temperature. 8 9 The economic origin of the problem and the solution.Read In Rainforests are one of the most valuable natural gifts in the world, but now they are dying out. What has happened?Read In Rainforests are one of the most valuable natural gifts in the world, but now they are dying out. What has happened?die out: become extinct or cease to exist gradually灭绝,逐渐消失 e.gRainforests are one of the most valuable natural gifts in Dinosaurs died out millions of years ago. the world, but now they are dying out. What has happened? e.g. It’s a custom which is beginning to die out. cf. die off: die gradually one by one, till none are leftrefers to animals or plants 相继死去直至死光 e.g. The widow was still in her middle-age when her relatives died off. Paradise LostChristopher Columbus said that he had never seen anything so beautiful, trees "beautiful and green, different from ours, with flowers and fruits and little birds which sing very sweetly." The great navigator's impression is the first known written description of a rainforest. It remains hard to beat. Rainforests are extraordinarily beautiful, but the beauty is fragile. Paradise LostIt remains hard to beat Paraphrase: Christopher columbus said that he had never seen anything so beautiful, trees "beautiful and green, different from ours, with The written description of a rainforest in the New World has flowers and fruits and little birds which sing very sweetly."always been one of the best of its kind. The great navigator's impression is the first known written description of a rainforest. It remains hard to beat. Rainforests are extraordinarily beautiful, but the beauty is fragile.Paradise LostChristopher columbus said that he had never seen anything so beautiful, trees "beautiful and green, different from ours, with flowers and fruits and little birds which sing very sweetly." The great navigator's impression is the first known written description of a rainforest. It remains hard to beat. Rainforests are extraordinarily beautiful, but the beauty is fragile.Paradise Lostdescription n. a statement or a piece of writing that tellswhat sth. or sb. is like 描写,记述,描述 Christopher columbus said that he had never seen anything so e.g. I gave the police a description of the stolen jewellery. beautiful, trees "beautiful and green, different from ours, with e.g. The beauty of the Rockies is beyond description. flowers and fruits and little birds which sing very sweetly." The great navigator's impression is the first known written description of a rainforest. It remains hard to beat. Rainforests are extraordinarily beautiful, but the beauty is fragile. Extended words: describe, descriptiveParadise Lostbeat v. defeat a competitor, or do or be better than sbor sth. 击败;胜过 Christopher columbus said that he had never seen anything so e.g. We played the top class at football but we couldn’t beautiful, trees "beautiful and green, different from ours, with beat them. flowers and fruits and little birds which sing very sweetly." The great navigator's impression is the first known written e.g. The room wasn’t much, but it beat driving to a hotel description of a rainforest. It remains hard to beat. Rainforests are 20 miles away. extraordinarily beautiful, but the beauty is fragile.Paradise Lostextraordinarily ad. very unusually 非常地,特别地,格外 Christopher columbus said that he had never seen anything so e.g. Her last album was extraordinarily successful. beautiful, trees "beautiful and green, different from ours, with flowers and fruits and little birds which sing very sweetly." e.g. We found him extraordinarily well-informed on The great navigator's impression is the first known written American affairs. description of a rainforest. It remains hard to beat. Rainforests are extraordinarily beautiful, but the beauty is fragile.Paradise Lostfragile a. easily damaged, broken, or harmed 易被损坏的;易碎的;脆 弱的 Christopher columbus said that he had never seen anything so e.g. Be careful with that vase ? it’s very fragile. beautiful, trees "beautiful and green, different from ours, with flowers and fruits and little birds which sing very sweetly." The great navigator's impression is the first known written description of a rainforest. It remains hard to beat. Rainforests are extraordinarily beautiful, but the beauty is fragile. e.g. I felt rather fragile weak for a few days after the operation Forty-five million years ago rainforests covered the city of London, and rainforests were then over 30 million years oldThat makes them the oldest communities of living things on the planet Forty-five million years ago rainforests covered the city of London, and rainforests were then over 30 million years oldThat makes them the oldest communities of living things on the planet.