人教版必修四unit2 reading 和练习讲解.ppt

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1、Unit 2 Working the land,pre-reading,What problem do they show ?,hunger,How do you feel when you see the pictures?,Do something to rid the world of hunger!,How much land can be used for farming?,3/4 of our earth is covered with water! 2. 1/2 of this piece is too hot, cold, or wet for farming! 3. 3/4

2、of this part is used for roads, buildings like houses, schools!,4. Only 1/32 of the earth is used for farming!,A Pioneer For All People,Super hybrid rice,Task 1 Scanning,Para1 A. Dr Yuans dreams. Para2 B. Dr Yuans personality. Para3 C. Dr Yuans biography. Para4 D. Dr Yuans appearance and his achieve

3、ment.,Para 1 Appearance and Achievement.,Appearance face: arm: body:,sunburnt,sunburnt,slim but strong,looks like a_,farmer,Although he is one of Chinas most famous scientists, Yuan Longping considers himself a farmer, for he works the land to do his research.,Indeed, his sunburnt face and arms and

4、his slim, strong body are just like those of millions of Chinese farmers, for whom he struggled for the past five decades.,Dr Yuan is like more a farmer than a scientist.,Para 1 appearance and achievement.,Appearance face: arm: body:,sunburnt,sunburnt,slim but strong,looks like a_,farmer,2. achievem

5、ents,He grows what is called_, which makes it possible to produce_ more of the crop in the same fields.,super hybrid rice,one-fifth,Para. 2 His biography,Born in Beijing,Graduated from college,Hunger was a disturbing problem. search for a way to increase the rice harvest.,200 million tons was produc

6、ed,Circulating his knowledge,22% 7%,Means?,UN rid the world of hunger,Thanks to his research, the UN has more tools in the battle to rid the world of hunger.,由于他的研究,联合国在消除世界饥饿的战斗中有了更多的方法,Using his hybrid rice, farmers are producing harvests twice as large as before.,using 作状语,修饰后面整个句子,Paragraph 3,To

7、pic sentence? Dr Yuan is quite satisfied with his life. He doesnt care about _ and _. He likes freedom for his search and hobbies.,fame,money,Personality,Para 4: his dreams,His first dream,His second dream,As tall as sorghum As big as an ear of corn As huge as a peanut,To export his rice so that it

8、can be grown around the globe.,1. himself (as) a farmer 认为他自己是个农民 2. the land 耕种土地,在田间耕作 3.do ones 进行研究 4. face and arms被太阳晒黑的脸庞和手臂 5.the past five 在过去的50年里 6.the first agricultural pioneer rice 第一个种高产水稻的农业先锋 7.a high 高产量 8. graduate Southwest Agricultural College 从西南农学院毕业 9. life 人生目标 10. the great

9、 need 对巨大的需求,11. a problem一个令人烦恼的问题 12. search 寻找 13. without _ _ the area of fields不扩大农田面积 14. ones knowledge传播知识 15. developed countries欠发达国家 16. 幸亏,由于 17. the world hunger消除(解决)世界饥饿 18. harvests twice before产量是从前的两倍 19. be quite 对.非常满意 20. care 喜欢;照顾;关心; _ _ little about对很少关心,21. would rather sth

10、.宁愿做 22. spend 在.上花费. 23. a comfortable life过舒适的生活 24. rather 而不是 25. _sb. for 使做好准备,为装备 26.give him less _ to do sth 给他更少的自由27._ _ from 从中醒来28. the hope of 怀着希望 29._ _ rice出口大米 30. the globe全球,全世界 31. make it possible _ _使成为可能,As a young man, he saw the great need for increasing the rice output. At

11、 that time, hunger was a disturbing problem in many parts of the countryside.,When he was young, he know how important it was to produce bigger rice crops.,= it is important to = doing sth. is important/of great importance,During his early years, much of the countryside was troubled by hunger.,= be

12、badly influenced/affected by,have a bad effect on,Using his hybrid rice, farmers are producing harvests twice as large as before. Spending money on himself or leading a comfortable life also means very little to him.,As they use his hybrid rice, farmers are producing twice as much rice as before.,He

13、 is not interested in/cares little about buying things for himself or having a,Just dreaming for things, however, costs nothing.,It doesnt cost anything to dream for something.,A3 B篇,What is CA? What are the three principles of CA? How does CA help reduce soil damage? What are the functions of cover

14、 crops? What is the rotation of crops?,It is meant to keep soil healthy, develop sustainable farming, and prevent the damaging overuse of land.,Gaining popularity, CA aims to help famers keep land healthy and productive by,become popular,Control tillage What is tillage?,turn over nutrient current un

15、usable,By avoiding tilling, organic soil matter may actually benefit as crop pieces form a protective surface over the soil.,cover crops,These crops prevent water and soil loss by Cover crops also,By cycling crops that need different nutrients through the same field, the soil,. statistics sunburnt o

16、utput circulated nationality struggled decade regret Therefore nutrition . A) 1.根据 2.build up 3. 幸亏,由于 4. lead to 5. 对感到满意 6. focus on 7. 宁愿,宁可 8. keepfree from/of 9. 摆脱,除去 10. with the hope of 1. with the hope of 2. lead to 3. build up 4. would rather 5. keep free from 6. be focused on 7. was satis

17、fied with 8. According to 9. Thanks to 10. rid of,. underline summary exports bacteria chemical expands . production hungry disturbing freedom equipment occupation confusing discovery comments reduced . more than cared for as as put back done research on,_ the past half century 在过去的半个世纪期间 _ fertiliz

18、ers 化学肥料 _use of 的长期使用 cause _ to 对造成伤害 _ off 洗掉 food_ 食品供应 _cancer 导致癌症 In _ 另外,此外 turn to_ farming 转向有机农业 _ on 集中于 _ soil _ _disease 使土壤免受疾病的影响 every_ _ 每隔几年 12. make_ ready for 使为做好准备 13. put down_ 扎根 14. avoid_ 避免做某事,What are some of the problems caused by chemical fertilizers? In addition, frui

19、t, vegetables and other food grown with chemical fertilizers usually grow too fast to be full of much nutrition.,化肥带来的问题有哪些呢?,另外,施过化肥的水果、蔬菜和其他食物通常生长得过快而营养不足。,过去分词作定语,3. Crops such as peas or soybeans put important minerals back into the soil, making it reading for crops such as wheat or corn that ne

20、ed rich and fertile soil.,像豌豆或者大豆这样的农作物将重要的矿物质带回土壤,从而使之适宜于种植要求土壤肥沃的农作物比如玉米或者小麦。,现在分词做定语,4. Organic farmers also plant crops to use different levels of soil, for example, planting peanuts that use the ground surface followed by vegetables that put down deep roots.,有机耕作的农民还种植多种农作物来利用不同层次的土壤。比如,他们先种植生长

21、于浅层土壤的花生,然后再种植生根于深层土壤的蔬菜。,过去分词作定语,take place turn up set off get away with cut down bring up account for break out rather than settle down move off come across carry on build up,发生 出现,到场,调大 出发,动身,使爆炸 不因受惩罚 砍倒,削减,删节 抚养,培养,教育,提出 是的原因,解释 爆发,突发 与其,不愿 定居,平静下来,专心于 离开,启程,出发 偶然遇见 继续,坚持 逐渐增强,建立,开发,Dear Mr. S

22、mith, Im writing to invite you to join us in the English poetry recital competition on July 4. the competition is going to take place on the second floor of the teaching building from 7 p.m. to 9 p.m., during which time participants will recite their favorite English poems. Those who win the prizes

23、will share their experience in learning English. It would be a great pleasure if you could come and be one of the judges. Im sure we will have a wonderful time together. Looking forward to your reply. Yours sincerely, Li Hua,But Mom refused to give up. “Im sure she is still inside,” she said as she

24、kicked the door with great force and shouted in a loud voice, “Wake up, Makcik!” By then, both of us were coughing badly. I was trying hard to pull Mom away when the door opened. Mom was right- Makcik stood there, totally confused. There was no time to explain. Mom immediately led Makcik downstairs

25、and outside to a safe spot where people had gathered to witness the fire. Realizing the seriousness of the situation, Makcik held my mothers hands tightly, with tears rolling down her cheeks.,A newspaper reporter came forward and interviewed Mom. Mom said that she was familiar with Makciks daily rou

26、tine and was certain she was still sleeping then. When asked if she was scared, Mom replied,” My neighbor was in danger, so the thought of fear never crossed my mind.” The reporter praised Mom for her brave and selfless act. Mom set a good example to me. She taught me the importance of helping others out of trouble. My mom was great.,

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