Unit 6 Developing ideas ppt课件-（2019）新外研版高中英语选择性必修第三册.pptx

1、Unit 6Nature in words Understand the text and the authors evaluation of Rachel Carson. Consider the message of Silent Spring and its implications for society. Understand the theme of the text, deepen the understanding of the unit theme, think about the impact of human activities on the natural envir

2、onment, and improve the awareness of protecting nature.Do you know infographic? Why we use infographic?An infographic is a collection of imagery, charts, and minimal text that gives an easy-to-understand overview of a topic.Provide a quick overview of a topicExplain a complex processDisplay research

3、 findings or survey dataSummarize a long blog post or reportCompare and contrast multiple optionsRaise awareness about an issue or causeInfographics are great for making complex information easy to digest. They can be helpful anytime you want to:Why are infographics used?Look at the infographic belo

4、w and answer the questions.Facts about DDT:DDT was first produced in 1874 and was later used as pesticide.It stays in the environment.It is highly poisonous to living organism, including humans.Now banned in many countries, it is still used in some for malaria control.DDT：a chemical compound that wa

5、s originally developed as an insecticide. It has no colour, taste or odour (气味气味). Its agricultural use was banned in the US in 1972 because of its damaging effects on the environment.1 How does DDT reach the human body in the food chain?When DDT is sprayed onto plants in order to kill insects, it i

6、s absorbed by plants and subsequently consumed by animals; humans in turn eat those animals. DDT also leaks through the soil and into rivers and lakes, where it contaminates fish consumed by humans.2 What harm does DDT cause?DDT is highly poisonous to living organism, including humans.How much do yo

7、u know about the book Silent Spring?Silent Spring began with a “fable for tomorrow” a true story using a composite of examples drawn from many real communities where the use of DDT had caused damage to wildlife, birds, bees, agricultural animals, domestic pets, and even humans. Silent Spring inspire

8、d the modern environmental movement, which began in earnest a decade later. It is recognized as the environmental text that “changed the world.” Rachel Carson was a prophetic (有先见之明的有先见之明的) voice and her “witness for nature” is even more relevant and needed if our planet is to survive into a 22nd ce

9、ntury.Learn something about the author Rachel Carson.Rachel Carson, writer, scientist, and ecologist, grew up simply in the rural river town of Springdale, Pennsylvania. Rachel Carson wrote only four books, but each of them in some measure changed the way we thought about ourselves and our world. 19

10、41: Under the Sea-Wind 1951: The Sea Around Us 1955: The Edge of the Sea 1962: Silent SpringRead the book review on Silent Spring, a book that led to the banning of DDT. Predict what will be mentioned in the passage. Basic information about the book, including the author, year of publication, theme

11、and main idea; The reason why this book is published; Features of the writing; Comments on this book; Influence of this book.Now read the passage and check your prediction.1. Which work was regarded as a milestone in the launch of the green movement in the Western world? A. The Edge of the Sea. B. U

12、nder the Sea Wind. C. Silent Spring. D. First Snow.C Choose the best answers.2. Why was Silent Spring so successful? A. Because it caused a great increase in environmental awareness. B. Because the writer is very famous. C. Because it reflects the realism. D. Because the bird described is very nice.

13、 A 3. Whats the topic of Silent Spring? A. Love, hope, human. B. Nature, love, life. C. Environment, life, human. D. Environment, love, human.C 4. Who did Carson mainly get criticism from? A. Most scientists. B. Chemists. C. Marine biologists. D. Pesticide industry people.D 5. Why does the author li

14、ke Silent Spring? A. Its strong arguments. B. Interesting topic. C. The beauty and elegance of writing. D. The quality of argument.C Organize information from the passage and complete the notes about Silent Spring.AuthorRachel CarsonYear of publication:_Purposes:Carson aimed to alert people to _ on

15、natural ecosystems.She wished to see pesticides used in a _way.the damaging of human activity1962more responsible, limited and carefully monitored_ said that Carsons research is not precise. Carson appeared in public and on television to _.Features of the book:Carson wrote a lot of _ in the book.The

16、 arguments are strong, and the language is _.scientific information, examples and researchbeautiful and elegantOpposing voices:The pesticide industrydefend her claimsInfluence of the book:_ was banned and the EPA was established in the US.Carson earned a posthumous_.The book changed the world by inc

17、reasing peoples _.The use of DDTPresidential Medal of Freedomenvironmental awarenessNow work in pairs. Talk about which aspects of the book review make you want to read the book.The influence of the book arouse my interest in reading the book. Because The book Silent Spring triggered an environmenta

18、l movement and as such we have known the toxic effects of chemical agriculture, basically from the very beginning. We have suffered both massive environmental damage, disease and pest resistance, and human health issues.1 Why was silent spring so successful?Silent Spring was so successful because it

19、 alerted the general public to the dangers of DDT. It planted important new ideas in the public mind, such as that spraying chemicals to control insect populations has an impact on other wildlife, and that the chemicals got into the food chain.2 What is the moral lesson behind “A Fable for Tomorrow”

20、?The moral lesson is that financial profit should not come at the expense of the environment and the creatures living in it.3 Why did some people challenge Carsons finding?Some people challenged Carsons findings because they were concerned about the negative impact, they would have on business in th

21、e pesticide industry.4 In what different ways do First Snow and Silent Spring raise peoples awareness of nature?First Snow shows the beauty of nature and in particular the snow through its words and imagery, while Silent Spring describes an unnatural spring without the beauty of birdsong. They each

22、raise peoples awareness of nature by highlighting the interplay between nature and human behavior.Work in groups. Write an award speech for Rachel Carson.1 Read the passage again and make notes about Rachel Carsons contributions to environmental protection. Consider the following:uher most influenti

23、al workuwhat points she tried to makeudifficulties she met withuher personal qualities2 Rachel Carson received her Presidential Medal of Freedom posthumously in 1980. Read the excerpt from President Carters award speech and note the language features. Never silent herself in the face of destructive

24、trends, Rachel Carson fed a spring of awareness across America and beyond. A biologist with a gentle, clear voice, she welcomed her audiences to her love of the sea, while with an equally clear determined voice she warned Americans of the dangers human beings themselves pose for their own environmen

25、t. Always concerned, always eloquent, she created a tide of environmental consciousness that has not ebbed.3 Write your own award speech of about 100 words and share it with the class.Now think about your performance in group discussion. Were you able to make an objective judgement about Rachel Carson?To present award speech for Rachel Carson.