现代大学英语精读第二版book3unit5

1、Silent SpringRachel CarsonR einforcementT ext AnalysisB ackgroundW arming upSilent SpringUnit 5Questions/ActivitiesCheck-on PreviewObjectivesWarming upSilent SpringUnit 5Warming upWork in pairs to name five environmental problems that are threatening our world. Questions/ActivitiesCheck-on Preview1.

2、We are faced with all kinds of environmental problems nowadays. But what is the one that Rachel Carson dealt with in her book Silent Spring? 2.How do chemicals affect the environment and people?3.Does Carson mean that insecticides should never be used in agriculture?Warming up1. Content & Messag

3、e: Develop an environmental consciousness (live and let live).2. Language: Practice reading skills. understanding extended essays (a combination of description, exposition and argumentation) understanding complicated paragraphs reading for gist inferring the authors attitudes/feelings/opinions/concl

4、usions (her love for the beauty and integrity of nature; her view of mans relation to nature) drawing inferences ObjectivesWarming up2. Language: Appreciate descriptive writing (use of sensory words to paint pictures). Appreciate devices to make writing precise and powerful. Learn how to use “so” an

5、d “such.” ObjectivesWarming upBackgroundAuthor Silent SpringUnit 5 Rachel Carson (1907-1964) biologist, writer, ecologistintense love for nature since her childhood“Humans have now acquired a fateful power to alter and to destroy nature. But Man is a part of nature, and his war against nature is ine

6、vitably a war against himself.” Rachel Carson Author BackgroundHer LifeShe was once bitterly attacked:“an anti-humanitarian crank, a priestess of nature, and a hysterical woman”But she courageously went on fighting until her idea caught on and more and more people joined in.the mother of modern envi

7、ronmental movement AuthorBackgroundHer Life1. When was it published?2. Who was the author?3. What is it about? What is its central argument?4. How was it received?5. How significant is it now?6. Does it still make sense now? AuthorBackgroundDetailedAnalysisStructureText AnalysisSilent SpringUnit 5 T

8、heme Questions for thinking: 1.What can you infer about Carsons view of the relation between man and nature? 2.Was her view common in her time? 3.How do you arrive at this inference? Theme Text AnalysisPart I: paras.1-6a town before & after the disasterPart II: paras. 7-9cause of the disaster: c

9、hemicalsPart III: paras. 10-14character & impact of mans tampering with naturePart IV: paras. 15-18reasons why pesticides fail to solve the pest problemText Analysis StructurePart V: paras. 19-24cause of modern pest problem and possible solutions Part VI: para. 25conclusionLogic & Technique

10、What: from interest to concern How: from general to specific from nature to man Why: from effect to cause How: from cause to solutionText Analysis Structure description exposition argumentation exposition & argumentationQuestions for thinking: 1.Why did Carson devote a whole paragraph to describ

11、e the spreading of species in nature before she mentioned mans role in the process? 2.Did she always first describe the mechanisms in nature before talking about mans tampering with nature? 3.Why did she present her ideas in this way? Whats her hidden argument?Text Analysis StructureContrast: a town

12、 before & after the disasterBefore Color Sound Motion Overall impression: vibrant, harmonious, beautifulAfter Color Sound Motion Overall impression: lifeless, deserted, awfulText AnalysisDetailed AnalysisPart I: Main Idea 1.Why did the author paint such a beautiful picture of a non-existent town

13、? 2.What was she trying to appeal to? Text AnalysisDetailed AnalysisPart II: Discussion Nature Direction: environment life Speed: Character: adaptative Human Direction: life environment Speed: Character: destructive irrecoverable1. How has man changed the relation between organisms and their surroun

14、dings? Text AnalysisDetailed AnalysisPart III: Discussion 2. In what way has mans power changed in character？(para. 11)3. How do chemicals affect our life? (para. 11) “passing from one to another in a chain of poisoning and death”4. What are the two examples given by the author as mans tampering wit

15、h nature? (paras. 11-13)5. Why is mans change of the world particularly devastating? (paras. 12-14)Part III: Discussion Text AnalysisDetailed Analysis1. Why are pesticides not a good solution? (3 reasons) They kill indiscriminately, reducing biodiversity. (para. 16) They contaminate the entire envir

16、onment. (para. 16) residual effect They couldnt solve the pest problem. (para. 17) resistance to chemicals resurgence induced by pesticidesText AnalysisDetailed AnalysisPart IV: Discussion 2. What does the “endless spiral” refer to? (para. 17)3. What does the author mean by saying “all life is caugh

17、t up in its violent crossfire”? (para. 17)4. What is the authors attitude towards mans use of chemicals? How is it implied? Rhetorical questions: “Can anyone believe it is ?”(para. 16) “How could intelligent beings?” (para. 18)Text AnalysisDetailed AnalysisPart IV: Discussion Translation1. 化学制品在农业上被

18、广泛地、无区别地使用。(apply to)2. 我们应该储存一些食物以应急。(lay down)3. 这本书刚一出版，她就被卷入了争论的漩涡当中。(be caught up in)4. 他的发明只有一项最终进入了市场。(find its way into)Text AnalysisDetailed AnalysisPart IV: Exercise1. What principles should we follow to solve the pest problem? (para. 19)2. How did the pest problem come into being?intensif

19、ication of agriculture (para. 20)invasion of imported species (paras. 21-23)3. Does spreading of organisms to new places happen in nature? How does it happen? What is the primary factor in this natural process? geological element, i.e. separating and rejoining of lands which took millions of years t

20、o complete (para. 21)Text AnalysisDetailed AnalysisPart V: Discussion 4. What are the sensible measures to solve the pest problem? (para. 24)to avoid suppressing “pests”to get more knowledge to promote an even balanceText AnalysisDetailed AnalysisPart V: Discussion In what ways have we done wrong in

21、 using chemicals? surroundingspublicusersText AnalysisDetailed AnalysisPart VI: DiscussionReinforcementDiscussionSilent SpringUnit 5Language1. How did Carsons view contrast with the popular attitude towards nature of her time?2. Any thoughts about the text, the book and the controversy it arouses? W

22、hat is the right attitude to nature?How do you look at human beings role in nature? Is our intelligence a blessing or a curse? How should we look at science and technology?Where did Carsons sense of mission come from?ReinforcementDiscussion What is good writing? Her measured, carefully-worded (langu

23、age) yet passionate prose (passion, love) was all the more damning because she, herself, was a scientist (ideas; information). ReinforcementWriting TechniquesHow can we write with power and precision?1.EloquenceParallels until they emerge and combine into new forms that kill vegetation, sicken cattl

24、e, and work unknown harm on those who drink from once pure wells. (para. 11) to still the song of birds and the leaping of fish, to coat the leaves with a deadly film, and to linger on in soil (para. 16)Rhetorical questions Can anyone believe? (para. 16) How could intelligent beings ? (para. 18)Rein

25、forcementWriting TechniquesAntitheses: (juxtaposition of contrasting ideas in one grammatical structure) The rapidity of change follows the impetuous pace of man rather than the deliberate pace of nature. (para. 13) this imagined tragedy may easily become a harsh reality we all shall know. (para. 8)ReinforcementWriting Techniques2. Pr