人教新课标高中英语必修四《Unit 2 Period One》课件

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1、Unit 2 Working the land,单元话题美文,Father of Hybrid RiceYuan Longping Yuan Longping,a famous Chinese agriculturalist,was born in Beijing in 1930.Professor Yuan graduated from Southwest Agriculture College in 1953 and has devoted himself to agricultural education and research since then.Professor Yuan wa

2、s a pioneer in hybrid rice research and made remarkable achievements in this area.The achievements of Yuan Longping greatly solved the food shortage,and provided a solution to the worldwide starvation.It is regarded as the fifth invention after Chinas Four Major Inventions,and is acclaimed as the Se

3、cond Green Revolution.As a result,he was awarded with many international awards.,Yuan Longping started the research of hybrid rice in 1964.He always carried out experiments on the farmlands,and made a breakthrough in 1973.The new technology was tested in many areas of South China in 1974 and 1975,an

4、d then extended to other areas.China became the first country that is able to produce hybrid rice.Yuan Longping is the first scientist who successfully changed the selfpollinating characteristic of rice and realized largescale farming of hybrid rice.This earned him the title “Father of Hybrid Rice”,

5、His pioneering work in hybrid rice breeding and production techniques has revolutionized rice cultivation in China,establishing Chinas world leading position in hybrid rice research.From 1976 to 1978,the total cultivated area of the hybrid rice developed by Yuan reached 1.1 billion mu(15 mu1 hectare

6、s),and increased rice output by 100 billion kg.At present,the hybrid rice developed by Yuan is planted on the farmlands all over China,which plays an important role in increasing Chinas grain production.It makes it possible to feed 22% of the world population on only 7% of the worlds total arable la

7、nd.,杂交水稻之父袁隆平 中国著名的农学家袁隆平1930年出生于北京,1953年毕业于西南农学院,从那时起便投身于农业教育和研究中。袁教授是杂交水稻研究方面的先驱,并在这一领域取得了突出的成就。袁隆平教授的成就极大地解决了粮食短缺问题,为世界的饥饿问题提供了解决办法。此项成就被认为是中国四大发明之后的第五大发明,并被赞誉为“第二次绿色革命”。因此,他获得了许多国际性的大奖。 袁隆平1964年开始杂交水稻的研究。他总是在农田地头进行实验,并在1973年取得了突破。在1974年和1975年,这项新技术在华南的许多地区展开了测试,然后又推广到其他地区。中国从而成为第一个能够生产杂交水稻的国家。袁隆

8、平也成为第一个成功改变水稻自花传粉特性以及实现大规模种植杂交水稻的科学家。这为他赢得了“杂交水稻之父”的头衔。 他在杂交水稻培育和生产技术方面的前瞻性工作使中国的水稻栽培取得了革命性的变革,确立了中国在杂交水稻研究方面的领先位置。从1976年到1978年,袁隆平培育的杂交水稻种植面积达到11亿亩(15亩1公顷),大米产量增加了1,000亿公斤。目前,袁隆平培育的杂交水稻在中国的稻田里得到广泛种植,为提高中国谷物的产量起到了重要作用。这使得依靠只占世界7%的可耕种土地,就能够养活22%的世界人口成为可能。,课文预读,Period One Warming Up & ReadingPre-readi

9、ng,匹配左边的单词和右边的汉语意思 第一组,1.struggle A.产量;输出 2.output B.循环;流传 3.expand C.斗争;拼搏;努力 4.circulate D.摆脱;除去 5.rid E.使变大;伸展,第二组,6.decade A.饥饿;欲望 7.crop B.十年;十年期 8.battle C.庄稼;农作物;产量 9.hunger D.自由;自主 10.freedom E.战斗;战役,第三组,11.grain A.工作;职业;占领 12.nationality B.配备;装备 13.occupation C.输出;出口 14.export D.谷物;粮食 15.eq

10、uip E.国籍,第四组,16.therefore A.数据;统计;统计数字 17.sunburnt B.引起烦恼的;令人不安的 18.super C.晒黑的 19.disturbing D.特级的;超级的 20.statistic E.因此;所以;因而 21.confuse F.使迷惑;使为难,.What other crops do you know all over the world besides rice?Please match the names of the crops with their Chinese names.,1.wheat A.土豆;马铃薯 2.sorghum

11、B.小麦 3.potato C.高粱 4.cabbage D.黄豆;大豆 5.onion E.绿豆 6.soybean F.洋葱 7.mung G.卷心菜 8.carrot H.西兰花 9.broccoli I.向日葵 10.sunflower J.萝卜,.Please tell the class something about an early agricultural scientistJia Sixie.Some crops only grow in certain areas of the world,do you know the reasons?,Step 1 Fast-read

12、ing .Whats the main idea of the passage? A.Ways to increase the rice output. B.Yuan Longpings dreams. C.Yuan Longpings super hybrid rice. D.Yuan Longpingan agricultural pioneer.,答案,.Match the main idea of each paragraph. Para.1 A.Yuan Longpings brief life experiences. Para.2 B.Yuan Longpings dreams.

13、 Para.3 C.Yuan Longpings attitudes toward life. Para.4 D.Yuan Longpings achievements in the improvements on rice production.,答案,Step 2 Careful-reading .Read the passage and judge whether the following sentences are true (T) or false (F). 1.The reason why Yuan wanted to increase the rice output when

14、he was young was that he wanted to become famous.( ) 2.By using Yuans hybrid rice,farmers are producing harvests twice what the amount was before.( ) 3.Not caring about being famous,Yuan is quite satisfied with his life.( ),F,T,T,答案,4.Yuan seldom spends money on himself;instead,he gives millions of

15、yuan to equip others for their research in industry.( ) 5.Yuan developed super hybrid rice to help Chinese farmers and hungry people all over the world.( ),答案,F,T,.Read the passage carefully and choose the best answer. 1.Why did Yuan Longping want to develop a new species of rice in the 1950s? A.Bec

16、ause he wanted to win an award. B.Because he wanted to catch others eye. C.Because hunger was a disturbing problem in China. D.Because his hometown suffered from drought.,答案,1,2,3,4,2.How long did it take Yuan Longping to develop his super hybrid rice? A.12 years. B.14 years. C.20 years. D.25 years.

17、,答案,1,2,3,4,3.Yuan Longpings hobbies include the following EXCEPT . A.listening to violin music B.playing mah-jong C.swimming and reading D.singing,答案,1,2,3,4,4.What does Yuan Longping think of being famous? A.It gives him a chance to know more important people. B.It makes him have more money to buy

18、 what he wants. C.It gives him a chance to take up more hobbies. D.It makes him have less freedom to do his research.,答案,1,2,3,4,Step 3 Post-reading After reading the passage,please fill in the following blanks. Famous scientist as he is,Yuan Longping considers himself a farmer.As a young man,Yuan L

19、ongping saw the great need for 1. (increase) the rice output.At that time,2. (hungry) was a disturbing problem in China.He wanted to increase rice harvests without 3. (expand) the area of the fields.In 1973,a special strain of rice made it possible 4. (produce) 20% more of the crop in the same field

20、s.Thanks 5. his research,the UN has more tools in the battle to rid the world 6. hunger.,答案,increasing,hunger,expanding,to produce,to,of,He is now circulating his rice knowledge in less 7. (develop) countries to increase their rice harvests and he wants to export his rice so that 8. can be grown aro

21、und the globe.Though he 9._ (struggle) for the past five decades,Yuan Longping is quite 10._ (satisfy) with his life.In his spare time,he enjoys listening to violin music,playing mahjong,swimming and reading.,答案,developed,it,has struggled,satisfied,Step 4 Sentence-learning 1.Indeed,his sunburnt face

22、 and arms and his slim,strong body are just like those of millions of Chinese farmers,for whom he has struggled for the past five decades. 句式分析 本句是一个主从复合句,句子的主语为“his sunburnt face and arms and his slim,strong body”,for whom为“介词关系代词”引导的非限制性定语从句,修饰Chinese farmers。 自主翻译 _ _ _,的确,他那被太阳晒得黝黑的脸庞和手臂,以及他那瘦削,

23、而又结实的身体,就跟其他千百万的中国农民一样,过去50年来,他,一直在努力帮助他们。,答案,2.In 1973,he became the first agricultural pioneer in the world to grow rice that has a high output. 句式分析 he became the first agricultural pioneer为句子的主干,to grow rice that has a high output为不定式作agricultural pioneer的定语,其中还含有一个that引导的定语从句,即that has a high output作rice的定语。 自主翻译 _,答案,1973年,他成为世界上第一位种植高产水稻的农业先驱。,3.He awoke from his dream with the hope of producing a kind of rice that could feed more people. 句式分析 此句为复合句,that引导定语从句,修饰先行词 a kind of rice。 自主翻译 _,他从梦中醒来,希望能种植一种可以养活更多人的水稻。,答案,

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