Unit5 Working the land 复习课件(共25张PPT)-人教版（2019）选择性必修第一册

(共25张PPT)
ROMAN
THE FATHER OF HYBRID RICE
UNIT5 WORKING THE LAND
人教版选择性必修一
PART 1
words
1.hybrid n.杂交种；混合动力车； 2.tackle vt.处理；对付；解决 3.crisis n. 危机；危急关头 4.boost vt./n. 使增长兴旺；推动 5.yield n./v.产量；收益；产生；屈服 6.characteristic n.特征;特点; 7.conventional adj. 传统,依照惯例的 8.intense adj.强烈的；激烈的 9.domestic adj.国内的；家用的 10.generate vt.产生；引起 11. strain n.系；压力；拉紧； 12.celebrity n.名望;名誉;名人 13. envision vt.展望；想象 14.broom n.扫把;扫帚；金雀花 15. grain n.谷物；谷粒；颗粒 16. vision n.视力；视野；想象；幻象 17.tunnel n.地下通道;地道;隧道 18.chemical adj.化学的 n.化学制品 19. extension n.扩大;电话分机 20. fertiliser n.肥料 21.alleviate vt.减轻；缓和 22.poverty n.贫穷；贫困 23. pesticide n.杀虫剂；农药 24. bacterium n.细菌 25.grocery n.食品杂货店 26.shortage n.不足；短缺 27.convince vt. 使相信；说服 28.attain vt. 获得；得到 29.output n.产量；输出； 30.estimate vt. /n.估计；估算 31. leisure n.闲暇；空闲 32.urban adj.城市的；都市的； 33.organic adj有机的有机物的 34.widespread adj.分布广普遍的； 35.digest v/n. 消化;领会;摘要 36.essential adj.完全必要的； 37.alternative n./adj.可供选择的事;
38. devote v,把..专用;专心于
39.assumption n.假定；设定
40. consumption消费，吃喝
41. reality 现实
42. salty 咸的；含盐的
43. entirely整个地，全部地
44.nutrition营养
45. depth深度
46. nutritious有营养的
47. convince 使相信
48. nutritional与营养相关的
49. for instance 例如
50. deep down内心深处；实际上
51. consist of由...组成
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1.devote v.献身；专心于—devotion n. 献身 –devoted adj. 忠实的
2.short adj.--n.shortage短缺---shorten v.使变短
3.crisis n. 危机---复数：crises
4.convince v. 使信服—convincing adj. 令人信服的 ---convinced adj. 坚信不疑的
5.attain v.获得--　attainable adj.可获得的---　n.　attainment 成就，学识，达成
6.assumption n.假设 –assume v. 假定，假设，认为---assuming conj.假设
7.overcome—overcame—overcome 克服
8.consumption n.—consume v. 消耗，耗费
9.generate v. 产生 --generation n.产生；一代人，同辈人
10.celebrity n. 名人；名声----　celebrated adj.著名的
11.reality n.现实 –real adj. 真实的 --realise v.实现、
12.vision n 想象，视力，视野– visible adj.可见的--invisible 无形的，看不见的
13. extension n. 扩大，扩建部分---extend v. 扩大
14.nutritional adj.营养的--　nutrition n.营养--　nutritious adj.营养丰富的
15.poor adj.--poverty n.贫困
16.digest v.消化，领悟--　digestion n.消化，吸收---digestive adj.助消化的
17.deep adj.--depth n.深度--deepen v.加深
PART 2
phrases
使某人相信某事convince sb. of sth. 说服某人做某事convince sb.to do sth. 随...而变化 vary with... 达到理想体重attain one’s ideal weight 假定…假设…on the assumption that... 克服困难 / 某人的恐惧overcome difficulties/ fear 轮流做某事take turns to do/in doing sth. 轮到某人做某事了It’s one’s turn to do sth. 是……的替代物an alternative to...
集中注意力/ 心思于…focus one’s attention/mind on
全面地；深入地；详细地in depth
在 30 米的深处at a depth of 30 metres
占据;从事take up
接管take over
正在增加;正在增长on the increase
增加了increase by
1. be known as 作为……而出名 2. “one of + adj.最高级 + 名词复数”表“最……之一” 3. work the land 耕种土地 4.be just like 恰如，就像 5. devote...to......献身；致力 6. be born in 出生于 7. pursue a career 追求事业职业 8. what concerned sb. most was that 最令某人担心的是…… 9. a shortage of... 缺乏…… 10. tackle the crisis 应对危机 11. boost yields 增加产量 12. varieties of 各种各样的 13. a matter of great debate 有争议问题 mon assumption 普遍认为 15. through intense effort 通过艰苦努力
16. overcame difficulties 克服困难
17. enable sb to do sth. 使某人能做
18. expand output 扩大产量
19. it is estimated that 据估计
20. be comprised of 包括；由……组成
21.generate from 来源于
22. received numerous awards 获众多奖项
23. in China/at home and abroad国内外
24. this is far from the case 事实远非如此
25. deep down 在内心深处；本质上；
26. fulfil one’s dreams 实现梦想
27. became a reality 成为了现实
28. open up 开发，开拓，开辟
29. dream up 想出
29.得到广泛使用sth be in widespread 30.随时间的推移over time 31.人工肥料 artificial fertiliser 32.此外 in addition;what’s more 33.相应地,轮流 in turn 34.化学杀虫剂chemical pesticide 35.因为 because of;due to 36.as for 关于 37.富有营养 be rich in nutrition 38.也没大有味have less flavor as well
39.作为一种选择as an alternative
40.转向 turn to
41.keep their soil rich and free of disease
(使土壤肥沃并免受疾侵害）
42.不同深度土壤different depths of soil
43.扎根很深put down deep roots
44.阻止他们这么做keep them from doing so
45.满足需求sever the demand
KEY WORDS IN PASSAGE
PART 3
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1.Indeed, his slim but strong body is just like that of millions of Chinese farmers, to whom he has devoted his life.
2. farmers often had poor harvests and sometimes even had a serious shortage of food to eat.
3.To tackle this crisis, he chose to study agriculture and received an education at Southwest Agricultural College in Chongqing.
4.Instead, farmers needed to boost yields in the fields they had.
5.Yuan was convinced that the answer could be found in the creation of hybrid rice.
6. One characteristic of hybrids is that they usually attain a higher yield than conventional crops.
7.The common assumption then was that it could not be done.
8.Through intense effort, Yuan overcame enormous technical difficulties to develop the first hybrid rice that could be used for farming in 1974.
READING AND THINKING
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9. This hybrid enabled farmers to expand their output greatly.
10.Today, it is estimated that about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan’s hybrid strains
11.Given that Yuan’s hybrids have made him quite wealthy, one might think he would retire to a life of leisure.
12.As a man of the soil, he cares little for celebrity or money.
13.What impresses people most about Yuan Longping is his ongoing ability to fulfill his dreams.
14.he envisioned rice plants as tall as sorghum, with each ear of rice as big as a broom, and each grain of rice as huge as a peanut.
15.He succeeded in producing a kind of rice that could feed more people at home and abroad.
16.His latest vision for “seawater rice” has also become a reality, and potentially opened up nearly one million square kilometres of salty land in China for rice production.
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1.Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle of the 20th century.
2.This affects the crops grown on the land and, in turn, the animals and humans who digest them.
3.As for chemical fertilisers, crops grown with them usually grow too fast to be rich in nutrition.
4.They may look beautiful on the outside, but inside there is usually more water than essential minerals, and they often have less flavour as well.
5.As an alternative, some farmers have switched to organic farming, and many customers have turned to organic food when they shop at the local grocery.
READING FOR WRITING
6.Organic farmers focus on keeping their soil rich and free of disease through natural means.
7.For instance, they may grow corn or wheat in a field one year, and then grow beans there the next.
8.Organic farmers also plant diverse crops that use different depths of soil to help keep it rich.
9.Some people would prefer to stop the use of man-made chemicals in agriculture entirely.
COMPLETE THE PASSAGES
PART 4
3.【答案】1.most influential 2. where 3.subsequently 4. were awarded 5.developed 6.himself 7.a 8. scholars 9.impacting 10. as
1.【答案】1.a 2.What 3.harvests 4.Convinced 5.overcame 6.is estimated 7.to 8.argricultural 9.to fulfil
WRITING
PART 5
假定你是李华，最近你们班将举行主题为“Chemical Farming or Organic Farming”的征文比赛。请用英语写一篇短文参赛，内容包括：
1.你的观点；
2.做出该选择的理由
（注意：词数80词左右；）
【审题构思】
Genre person
Time tense structure
三段论
Content 1.直抒胸臆表明观点 2.写明自己选择理由
3.总结，且再次肯定自己观点
Argumentative
simple present tense
the first and third person
【遣词】
尽自己所能 保护脆弱的环境 旨在，为了 对自然环境友好 患癌症的人 ...的数量 应该 毋庸置疑（副词） 毋庸置疑（同位语从句） 更注意...
富含
矿物质和维生素
必备营养
确保
潜在的
...的可能性
如此以至于
do everything in our power
protect the delicate environment
intend to do sth
be friendly to natural environment
people diagnosed with cancer
the number of
be supposed to do sth
undoubtedly
there is no doubt that
attach more attention to
be rich in
minerals and
vitamins
essential nutrition
guarantee
enssure
potential
likelyhood of
so ... that ...
【造句】
Para1.直抒胸臆表明观点:
1.在我看来，有机种植比起化学耕种更合适，因为它有明显优于后者的优势
______________, organic farming _______________chemical farming ____________ its significant advantages ______ the latter.
In my opinion
is preferable to
over
because of
【造句】
Para2.阐述理由1：
2.首先，环境如此脆弱，以致于我们应该尽我们所能来保护环境。
______________, the environment is ______________that
we should_________________________to protect it.
In the first place
do everything in our power
so delicate
3. 为保持土壤丰富，免于化学肥料的有机耕种毋庸置疑是对环境友好的。
_____________keep the soil rich, organic farming,______________________ , is undoubtedly friendly _____ the environment.
which is free of chemical fertilisers
Intended to
to
【造句】
Para2.阐述理由2:
4.其次，被诊断出癌症的人数在上升，我们应该对多关注所吃的。
__________________people diagnosed with cancer is__________, and we ______________attach more attention to our food.
The number of
are supposed to
on the rise
is rich in
5.有机食物富含矿物质和维生素，它能保证我们必备的营养并减少患潜在的严重疾病的可能性！
Organic food ________minerals and vitamins. It __________ us the essential nutrition and reduces _______________potential serious disease.
guarantees
the likelihood of
【造句】
Para3.总结：
6.总之，综合考虑所有因素，我们的偏爱应该给与有机种植！
______________, with all these factors_____________________ , preference should be given to organic farming.
taken into account
In conclusion
连句成篇
In my opinion, organic farming is preferable to chemical farming because of its significant advantages over the latter.
In the first place, so delicate is the environment that we should do everything in our power to protect it. Intended to keep the soil rich, organic farming, which is free of chemical fertilisers, is undoubtedly friendly to the environment.With the number of people diagnosed with cancer on the rise, we are supposed to attach more attention to whatwe eat. Rich in minerals and vitamins, organic food guarantees us the essential nutrition as well as reducing the likelihood of potential serious disease.
In conclusion, with all these factors taken into account, preference should be given to organic farming.
ROMAN
THE FATHER OF HYBRID RICE
THANKS A LOT!
人教版选择性必修一