大连外语学院：《基础英语》（英文版） UNIT 15 AFable for Tomorrow

A Fable for tomorrow Liu Dan

A Fable for Tomorrow Liu Dan Unit 15

Background Information ♂ Know what?

Background Information ♂ Know what ?

Man and Environment Introduction t-Ecosystem -i Deforestation 于 Pollution

Man and Environment Introduction Ecosystem Deforestation Pollution

Introduction Although the world is large, man is able to live in only a small part of it. The atmosphere is only about eleven kilometers thick. The soil that supplies us with food is only about fifteen centimeters thick and man can live on only about one eighth of the worlds surface. In the past two hundred years man has greatly changed his environment. Water has been given to deserts. Roads have been built across deserts and through forests Cities have grown to an astonishing size. many scientists think that man may not find life pleasant in the world of the future

Introduction Although the world is large, man is able to live in only a small part of it. The atmosphere is only about eleven kilometers thick. The soil that supplies us with food is only about fifteen centimeters thick and man can live on only about one eighth of the world’s surface. In the past two hundred years man has greatly changed his environment. Water has been given to deserts. Roads have been built across deserts and through forests. Cities have grown to an astonishing size. Many scientists think that man may not find life pleasant in the world of the future

Ecosystem any closed world in which life exists Oxygen Cycle Nitrogen Cycle This is the cycle that keeps A large part of the air consists of nitrogen gas, which joins with up our oxygen supply other substances to form nitrates When we breathe in we The nitrates are taken in by plants use up the oxygen in the Animals then eat these plants air. Carbon dioxide is Their wastes return some of the produced and is breathed nitrogen compounds to the soil out. Trees and plants Later bacteria break down these breathe in the carbon compounds. Simple nitrogen compounds are formed as well as dioxide we produce. They free nitrogen gas. The simple then give out oxygen. So compounds are used up by plants the cycle repeats again. The gas returns to the atmosphere

Ecosystem: any closed world in which life exists Oxygen Cycle This is the cycle that keeps up our oxygen supply. When we breathe in we use up the oxygen in the air. Carbon dioxide is produced and is breathed out. Trees and plants breathe in the carbon dioxide we produce. They then give out oxygen. So the cycle repeats. Nitrogen Cycle A large part of the air consists of nitrogen gas, which joins with other substances to form nitrates. The nitrates are taken in by plants. Animals then eat these plants. Their wastes return some of the nitrogen compounds to the soil. Later bacteria break down these compounds. Simple nitrogen compounds are formed as well as free nitrogen gas. The simple compounds are used up by plants again. The gas returns to the atmosphere

Deforestation >Deforestation is a global problem, but it is occurring most rapidly in tropical regions of the world. Most forests in other climatic areas have already been affected by human beings. They have been destroyed or preserved or systematically cut and replanted Two reasons: one is the mechanization of the logging industry. The second is the worlds hunger for forest products. These jungles are the worlds largest and last reserve of timber. Because the world needs the wood that these forests supply, they will robably be cut pi

Deforestation ➢ Deforestation is a global problem, but it is occurring most rapidly in tropical regions of the world. Most forests in other climatic areas have already been affected by human beings. They have been destroyed or preserved or systematically cut and replanted. ➢ Two reasons: one is the mechanization of the logging industry. The second is the world’s hunger for forest products. These jungles are the world’s largest and last reserve of timber. Because the world needs the wood that these forests supply, they will probably be cut

Pollution Pollution is a dirty word. To pollute means to contaminate-to spoil something by introducing impurities which make it unfit or unclean to use. We see it, smell it, taste it, drink it, and stumble through it. We literally live in and breathe pollution, and, not surprisingly, it is beginning to threaten our health, our happiness, and our very civilization y Types: air water soil noise c,etc Present Situation: Man are destroying the ecological balance by deforestation, uncontrolled use of insecticides and fertilizers. the dumping of sewage and chemicals into water. If no actions are taken the future of the world is frightening

Pollution ✓Pollution is a “dirty” word. To pollute means to contaminate—to spoil something by introducing impurities which make it unfit or unclean to use. We see it, smell it, taste it, drink it, and stumble through it. We literally live in and breathe pollution, and, not surprisingly, it is beginning to threaten our health, our happiness, and our very civilization. ✓Types: air ~ ; water ~ ; soil ~ ; noise ~ , etc. ✓Present Situation: Man are destroying the ecological balance by deforestation, uncontrolled use of insecticides and fertilizers, the dumping of sewage and chemicals into water. If no actions are taken, the future of the world is frightening

Teaching Outline Pre-reading Questions Passage Analysis Form Theme and structure Language points Useful expressions Class activities Weekly quiz

Teaching Outline • Pre-reading Questions • Passage Analysis ￭ Form ￭ Theme and Structure ￭ Language points & Useful expressions • Class Activities • Weekly quiz

Pre-reading Ouestions + 1. What doesfable mean? 2. What can this fable for tomorrow be about 3. What are the problems relating to the future most people are concerned about

Pre-reading Questions 1. What does “fable” mean? 2. What can this fable for tomorrow be about? 3. What are the problems relating to the future most people are concerned about?

Passage Analysis o Form: fable(a brief tale, dealing w things in life, often told to teach a moral le o Main theme, to convince the reader of the seriou effects of pollution resulting from the massive and indiscriminate use of fertilizers and pesticides o Structure the main ideas Part I(LI-14) All life in harmony with its surroundings Part I(L15-34) The coming of a strange blight Part I(L35-39) The stricken world silenced by people themselves

Passage Analysis o Form: fable (a brief tale, dealing with fundamental things in life, often told to teach a moral lesson.) o Main Theme: to convince the reader of the serious effects of pollution resulting from the massive and indiscriminate use of fertilizers and pesticides. o Structure & the Main Ideas Part I (L1-14) All life in harmony with its surroundings Part II (L15-34) The coming of a strange blight Part III (L35-39) The stricken world silenced by people themselves