实用英语第三册7课A Fable for Tomorrow市公开课金奖市赛课一等奖课件

1、A Fable for Tomorrow Unit 15第1页 Background Information Know what ? 第2页 Man and Environment Introduction Ecosystem Deforestation Pollution第3页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 su

2、pplies 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 g

3、rown to an astonishing size. Many scientists think that man may not find life pleasant in the world of the future.第4页Ecosystem:any closed world in which life existsOxygen 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 pr

4、oduced 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 the

5、n 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.第5页DeforestationDefore

6、station 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 logg

7、ing 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 probably be cut. 第6页PollutionPollution is a “dirty” word. To pollute means to contaminateto spoil

8、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 ;

9、 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.第7页Teaching OutlinePre-reading

10、QuestionsPassage Analysis Form Theme and Structure Language points & Useful expressions Class ActivitiesWeekly quiz第8页Pre-reading QuestionsWhat does “fable” mean?What can this fable for tomorrow be about?What are the problems relating to the future most people are concerned about?第9页Passage Analysis

11、 Form: fable (a brief tale, dealing with fundamental things in life, often told to teach a moral lesson.)Main Theme: to convince the reader of the serious effects of pollution resulting from the massive and indiscriminate use of fertilizers and pesticides.Structure & the Main Ideas Part I (L1-14) Al

12、l 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第10页Language Points第11页harmonyn. (pl. nies) U agreement (of feeling, interests, opinions, etc)e.g. There was not much in international affairs dur

13、ing those years.There was perfect between the two brothers.His tastes (plans) are in with mine.They live together in perfect . C,U (instance or example of) pleasing combination of related thingse.g.the beautiful picture of the of sea and sky of colour and a design in a picture 第12页adj. harmoniousple

14、asingly or satisfactorily arranged; in agreement e.g. a group of building families/neighboursv.t. & v.i. harmonize (with)be in harmony or agreement e.g. nationalism with international amity The facts stated by different witnesses .第13页Cloud (of) n. mass of things in the air, esp. moving together e.g

15、. a of arrows (insects, locusts, horsemen, smoke, dust or sand) Flies by the millions engulfed us in dense s. He made his way to the exit in a of security men. a rain/shower of arrows (bullets, ashes congratulations or protests) 箭（弹）如雨下；阵阵落尘；一连串 祝贺；劈头盖脸一阵抗议 a sea of up-turned faces/flame无数朝上看脸/一片火海

16、第14页backdropn (= backcloth). painted cloth hung at the back of a stage in a theatre, as part of the scenery; background 背景幕，天幕；背景 e.g. Indochina is the of the story. Their wedding was held in a small village church which has a backdrop of snow-capped mountains.v.t. provide a backdrop for (backdroppe

17、d or backdropt) 第15页abundance n. great plenty; quantity that is more than enough in ; an of 充裕，丰富 e.g. food an drink in ; live in 过着丰衣足食生活 an of grain; Oil flows in . She had an of very dark hair.adj. abundant: plentiful e.g. We have proof of his guilt. in: rich in, well supplied with 富于，富有v. abound

18、 (in/with): exist, or have in great numbers or quantities e.g. The river s in fish./ Fish in the river.第16页 blight n. (sorts of) plant disease; mildew；evil influence of obscure origin 挫折，打击；造成毁灭原因 e.g. a upon ones hopes 使某人希望落空原因 a on ones life 毁掉某人一生原因 v.t. be a on 使枯萎，破坏，摧残 e.g. Frost ed the crops

19、. The serious illness ed the rest of his life. Distrustfulness ed his previous marriage.第17页 creep v.i. move slowly, quietly and secretly 蹑手蹑脚地走，迟缓地行进 e.g. The cat crept silently towards the bird. The thief crept along the corridor at midnight. (of time, age, etc ) come on gradually 渐渐产生，不知不觉到来 e.g.

20、 Old age s on us all. The hours crept by. A note of irritation crept into her voice.第18页spell n. a) words used as a charm, supposed to have magic power 符咒，咒语 cast/put a on/over s.b. 对某人施符咒 Be under / lay s.b. under a 以符咒镇住 Speak/break the over s.b. 对某人念咒/解咒语 b) attraction, fascination, exercised by

21、a person, occupation, etc e.g. under the of her beauty 为她美色所吸引 use witchcraft to s.b. 用巫术迷住某人 This place has a and people feel it when they come here. The explorers story held the children under a .第19页sweepv.t.a) clean or clear away as with a broom; push away e.g. The wind swept the clouds away. 吹散

22、了云 Many bridges were swept away by the floods. 被洪水冲断 The current swept the logs along. 水流冲走了木材。b)pass over or along; move quickly over or with a rush 扫过，擦过，席卷 e.g.A huge wave swept over the deck.A blizzard swept the country.Malaria swept the villages in the valley. 第20页strike v. (illness, trouble, e

23、tc) seriously affect or attack s.b. e.g. He was stricken by a heart disease. 心脏病突发 Drought struck the village. 那个村子遭受旱灾。 The rise in living costs struck the poor people of the country. 穷人遭殃 The enemy struck the town at dawn. 发起进攻第21页desert v.t. a)to leave empty or leave completely 抛弃，舍弃 e.g. We shou

24、ldnt a friend in trouble. The streets are ed at night. They ed their farm for the city. b) to leave (military service) without permission 逃兵，开小差 n. desertion; deserter第22页 abandon: to leave completely and for ever; desert; to give up, esp, without finishing; stop e.g. ones wife and children; the sea

25、rch for the lost childforsake (fml): to desert, leave for ever; give up completelyquit (infml): to stop (doing sth.) and leave e.g. ones jobgive up: to stop having or doing e.g. smoking/ones ideas第23页counterpartn. person or thing exactly like or closely corresponding to another 极相象人或物；相对应人或物；相对物 e.g

26、. Sometimes people mistake a feverish flush as the of healthy colour. He is the of his twin brother. Canadas PM is the of the U.S. President.第24页substantialadj. large, considerable 相当可观；大量；重大 e.g. a number of weapons 大量武器 profits (wages) 高额利润（工资） have a wait 等候很久 Our soccer team won the game by a ma

27、rgin. 以悬殊比分 Since he returned this term, he has made progress. Many people demanded that blacks be given a voice in the government. 让黑人在政府中有举足轻重讲话权 n. substantiality 第25页Useful Expressions 1in the heart of 2 in harmony with 3 clouds of 4 delight ones eye 5 raise ones house 6 sink ones well 7 come into bloom 8 be lined with 9 creep upon/over10 a substantial number of 第26页 Class Activity第2