高中英语外研版 (2019)选择性必修 第三册Unit 6 Nature in words背景图课件ppt

这是一份高中英语外研版 (2019)选择性必修 第三册Unit 6 Nature in words背景图课件ppt，共55页。PPT课件主要包含了contents，杀虫剂，有毒的，III，雄辩的有说服力的，衰退减退，②  意识到注意到，旨在做某事，使意识到使认识到，尤其特别等内容，欢迎下载使用。
Pre-reading
Language pints
Fast reading
Intensive reading
Pst-reading
• DDT was first prduced in 1874 and was later used as pesticide. • It stays in the envirnment.
Lk at the infgraphic belw and answer the questins.
Facts abut DDT:
• It is highly pisnus t living rganism, including humans. • Nw banned in many cuntries, it is still used in sme fr malaria cntrl.
Hw des DDT reach the human bdy in the fd chain?
When DDT is sprayed nt plants in rder t kill insects, it is absrbed by plants and subsequently cnsumed by animals; humans in turn eat thse animals. DDT als leaks thrugh the sil and int rivers and lakes, where it cntaminates fish cnsumed by humans.
2. What harm des DDT cause?
DDT is highly pisnus t living rganism, including humans. It is hard t break dwn and stays in the envirnment fr a lng time.
Silent Spring is a ppular science bk by the American science writer Rachel Carsn, first published in 1962. The bk is abut the harm f pesticides t the envirnment. It describes a wrld withut birds, bees r butterflies. It is this unusual bk that has raised the awareness f prtecting the wildlife and envirnment arund the wrld.
Rachel Carsn (1907-1964) was a pineer f the wrld’s  envirnmental mvement thrugh her writing abut the prtectin f the natural wrld. Her 1962 bk Silent Spring made her well knwn by many peple. It describes the harmful changes in the envirnment f using txic chemicals n farmland.
Read the bk review n Silent Spring, a bk that led t the banning f DDT. Predict what will be mentined in the passage.
It is a bk review n Silent Spring, s the fllwing parts may be mentined in the passage:
1) basic infrmatin abut the bk, including the authr, year f publicatin, theme and main idea;
2) the reasn why this bk is published; 3) features f the writing; 4) cmments n this bk; 5) influence f this bk.
Read the passage and check yur predictin.
basic infrmatin abut the bk, including the authr, year f publicatin, theme and main idea;2) the reasn why this bk is published;3) features f the writing; 4) cmments n this bk; 5) influence f this bk.
All the infrmatin is included.
Organise infrmatin frm the passage and cmplete the ntes abut Silent Spring.

Silent Spring
Authr: Rachel CarsnYear f publicatin: 1.____________Purpses: ● Carsn aimed t alert peple t 2.________________________________ n natural ecsystems.
the damaging effects f human activity
● She wished t see pesticides used in a _______ f the bk: ● Carsn wrte a lt f 4._______________________________________ in the bk.● The arguments are strng and the language is 5.__________________ .
scientific infrmatin, examples and research
beautiful and elegant
mre respnsible, limited and carefully mnitred
Oppsing vices: 6.___________________said that Carsn’s research is nt precise. Carsn appeared in public and n televisin t 7.________________.
The pesticide industry
defend her claims
Influence f the bk: ● 8.________________was banned and the EPA was established in the US.● Carsn earned a psthumus 9.___________________________________● The bk changed the wrld by increasing peple’s 10._______________________
The use f DDT
Presidential Medal f Freedm
envirnmental awareness
Think and Share.
1. Why was Silent Spring s successful? 2. What is the mral lessn behind “A Fable fr Tmrrw”? 3. Why did sme peple challenge Carsn’s findings? 4. In what different ways d First Snw and Silent Spring raise peple’s awareness f nature?
1. Why was Silent Spring s successful?
Silent Spring was s successful because it alerted the general public t the dangers f DDT. It planted imprtant new ideas in the public mind, such as that spraying chemicals t cntrl insect ppulatins has an impact n ther wildlife, and that the chemicals gt int the fd chain.
2. What is the mral lessn behind “A Fable frTmrrw”?
The mral lessn is that financial prfit shuld nt cme at the expense f the envirnment and the creatures living in it.
3. Why did sme peple challenge Carsn’s findings?
Sme peple challenged Carsn’s findings because they were cncerned abut the negative impact they wuld have n business in the pesticide industry.
4. In what different ways d First Snw and Silent Spring raise peple’s awareness f nature?
First Snw shws the beauty f nature — and in particular the snw — thrugh its wrds and imagery, while Silent Spring describes an
unnatural spring withut the beauty f birdsng. They each raise peple’s awareness f nature by highlighting the interplay between nature and human behavir.
Wrk in grups. Write an award speech fr Rachel Carsn.
1. Read the passage again and make ntes abut Rachel Carsn’s cntributins t envirnmental prtectin.
Cnsider the fllwing:• her mst influential wrk • what pints she tried t make• difficulties she met with • her persnal qualities
• her mst influential wrk
• what pints she tried t make
She aimed t alert nt nly the scientific cmmunity but als the general public t the damaging effects f human activity n natural ecsystems — in particular, t the harmful use f pesticides, such as DDT.
• difficulties she met with
Her bk quickly became a target fr critics in the pesticide industry; There were many attempts t damage Carsn’s reputatin and stp her wrk frm influencing public plicy.
• her persnal qualities
Precise; determined; passinate etc.
2. Rachel Carsn received herPresidential Medal f Freedmpsthumusly in 1980.Read the excerpt frm PresidentCarter’s award speech and ntethe language features.
Never silent herself in the face f destructive trends,Rachel Carsn fed a spring f awareness acrssAmerica and beynd. Always cncerned, alwayselquent, she created a tide f envirnmentalcnsciusness that has nt ebbed.
3. Write yur wn award speech f abut 100 wrds and share it with the class.
1. alert v. ① 向……报警；使警觉；使警惕；使戒备
Neighbrs quickly alerted the emergency services. 邻居很快向紧急情况服务部门报了警。
②  alert sb. t sth.: make sb. aware f sth. 使意识到；使认识到
They had been alerted t the pssibility f further price rises. 他们已意识到价格可能继续上涨。
adj. ①  警觉的；警惕的；戒备的
Suddenly he fund himself awake and fully alert. 突然他发觉自己醒了过来，而且高度警觉。
We must be alert t the pssibility f danger. 我们必须认识到危险的可能性。
2. thrugh adj. ① 彻底的；完全的；深入的；细致的
The plice carried ut a thrugh investigatin. 警方展开了全面的调查。
② 十足的；彻头彻尾的；完完全全的
Everything was in a thrugh mess. 一切都是乱七八糟的。
近义词：cmplete adv. thrughly
3. precise adj. 准确的；确切的；精确的；明确的
precise details / instructins / measurements 确切的细节；明确的指令；精确的尺寸
Can yu give a mre precise definitin f the wrd? 你能给这个词下个更确切的定义吗？
近义词：accurate
t be precise  确切地说；准确地说The shelf is abut a meter lng — well, 98cm, t be precise. 架子长约一米。嗯，精确地说，是 98 厘米。
4. crucial adj. 至关重要的；关键性的
a crucial factr / issue / decisin 关键性的因素 / 问题 / 决定
It is crucial that we get this right. 我们把这个问题弄明白是极其重要的。
Parents play a crucial rle in preparing their child fr schl. 父母对孩子做好上学的准备起着至关重要的作用。
He wasn’t there at the crucial mment. (= when he was needed mst) . 紧要关头他却不在那里。
近义词：critical; essential
adv. cruciallyChewing prperly is crucially imprtant.  正确地咀嚼是至关重要的。
1. aim t d sth ____________________ 2. alert … t … ____________________ 3. in particular ____________________4. urge sb. t d sth ____________________ 5. make sb. aware f ____________________6. in additin t ____________________
7. dzens f __________________ 8. be regarded as ___________________ 9. becme a target fr ___________________ 10. stand by ___________________11. be accessible t ___________________
1. On the mrnings that had nce thrbbed with the dawn chrus f rbins, catbirds, dves, jays, wrens, and scres f ther bird vices there was nw n sund; nly silence lay ver the fields and wds and marsh.
Paraphrase: Once, the mrnings had been full f the sund f many different birds, including rbins, catbirds, dves, jays, wrens and many thers. But nw there was n sund, nly silence in the fields and wds and marsh.
注意本句中表示对比关系的单词 nce 和 nw，通过对比过去春天生机盎然的早晨和现在春天万籁俱寂的早晨这两种不同的景象，感知本应该属于春天的美好事物（the dawn chrus f rbins, catbirds, dves, jays, wrens, and scres f ther bird vices）的消失，体会现在的春天没有一点儿声音的凄凉和恐怖，感悟 Silent Spring 的主题意义。
2. The 50 r s pages at the end f the bk list Carsn’s surces, shwing hw thrugh and precise she was as a scientist.
Paraphrase: Carsn’s surces are listed n the final 50 r s pages f the bk, which shwed hw thrugh and precise she was as a scientist.
hw 引导宾语从句，作为程度副词修饰 thrugh 和 precise，表明了 Carsn 作为科学家所具有的深入、严谨的品质。
shwing 在本句中作伴随状语修饰前半句。
3. Silent Spring was therefre regarded as a milestne in the launch f the green mvement in the Western wrld.
Paraphrase: The bk Silent Spring was as a result cnsidered a significant mark in the early days f the green mvement in the Western wrld.
Hnesty is regarded as the traditinal virtue f ur Chinese natin. 诚信被认为是我们中华民族的传统美德。
regard … as … 是固定搭配，意为“将……认为……”
4. Carsn appeared in public and n televisin t defend her claims — and tday, mre than 50 years after it was published, the vice f Silent Spring is still ringing lud and clear.
Paraphrase: Carsn attended public events and spke n televisin in defense f her statements. Tday, mre than 50 years after the bk was published, the message f Silent Spring is still making an impact n peple.
本句中的 mre than 50 years after it was published 是插入语，修饰 tday, 说明书的影响和警示作用很深远，一直持续到该书出版五十多年后的今天。
lud and clear 意为“容易理解，清楚明白”
The message came thrugh lud and clear. 那消息传达得清清楚楚。
5. This is nt s much because f the quality f her arguments, strng thugh they are, but because f the beauty and elegance f her writing.
Paraphrase: Althugh her arguments are slid, Carsn’s bk is interesting and accessible because her writing is beautiful and elegant.
本句的主体结构是 This is nt s much because f ... but because f ...
This 指代的是 She made a crucial but ptentially difficult-t-understand subject interesting and accessible t millins f peple.
the beauty and elegance f her writing 是这本书有趣、易读的主要原因。
句中的 thugh 引导让步状语从句，从句在这里作插入语修饰 her arguments, 表明虽然书中的论据并不是它有趣、易懂的原因，但这些论据也是强有力的。
thugh 引导让步状语从句时，为了语气或正式文体的需要，通常可以改为倒装句式。Yung thugh he was, he knew hw t behave well.虽然他很年轻，但他知道如何举止得体。