必修四二单元学案.docx

1、必修四二单元学案Unit2 Working the land ReadingA pioneer for all people (period 2)Preview plan (预习案) . Words about agriculture and farming在田间工作 从事研究工作 在过去的五十年里 种植杂交水稻 成为农业先驱 产量高 出生在一个贫苦家庭 一生致力于 增加水稻产量 .寻求做某事的途径 传播知识 摆脱饥饿 对感到满意 很少关心 把钱花在 过着舒适的生活 有时间从事 喜欢/宁愿做某事 Typical Sentence原句背诵Dr Yuan Longping grows what i

2、s called super hybrid rice.本句是由连接代词 引导的 从句，在从句充当 成分。例句背诵 A modern city has been set up in what was a wasteland ten years ago.仿写背诵 we cant get seems better than we have.Guiding plan (导学案). Teaching proceduresWarming up (group work) Answer the questions in groups by using expressions below.1. How much

3、 do you know about Dr. Yuan Longping? Useful expressions Sb. was born in Sb looks like Sb. graduated from Sb.be fond of / be good at / be interested in Sb. be aboutmetres tall a baby face/ chubby face/ round face/big/ bright/ dark/ warm/ attractive eyes sb. be thin / fat / muscular / short / tall Li

4、stening Listen to the text carefully and fill in the blanks.Appearance: _ face and arms and his _, _bodyIn 1974, he became the first _ _ in the world. Achievement: He grows what is called super _ _.Reading Task 1 Predicting Read the title of the passage and look at the picture below the title and tr

5、y to answer the following questions.( ) 1. what kind of writing does the passage belong to?A. travel jounal B. novel C. essay D. biography( ) 2. What do you think the word “poineer” in the title refers to? Task 2 SkimmingChoose the most suitable heading from A-D for each paragraph. There are two ext

6、ra headings which you do not need.HeadingsParagraphs A. He cares little about spending the money on himself and would rather keep time for his hobbies.B. He became the first agricultural pioneer in the world to grow rice that has a high output.C. Dr. Yuan grows what is called super hybrid rice.D. Dr

7、 Yuan s dreams.E. He cares little about spending the money on himself and would rather keep time for his hobbies.F. Born in 1930. Dr. Yuan graduated from Southwest Agricultural College in 1953. Suggested answers:Paragraph1 Paragraph2 Paragraph3 Paragraph4 Group work: Can you describe each paragraph

8、with only one word?P1: P2. P3. P4. Task 3 Detailed Reading1. Reading the passage carefully and find out the detailed information about Dr.Yuan and his Super hybrid rice. Information about Yuan Longpingbirthin Beijing in educationgraduate from in 1953personalityconsider himself as a ; care about spen

9、ding money on himself and being famous; hobbylisten to the violin, play mah-jong, swimming and readingdream1. rice plants as as sorghum; each ear of rice as as an ear of corn and each grain of rice as as a peanut.2. his rice to be grown all over the worldinformation about Yuans super hybrid ricecapa

10、cityProduce more of the crop in the same fields; more than of the rice in China from this hybrid strainapplicationbesides China, being circulated in India, Vietnam and other less countries to increasetheir rice harvestcontributionrice harvests being produced twice as large; of people fed from just o

11、f the farmland in China; the UN ridding the world of hungerfuturethe rice being grown all over the worldHomework plan (group work)Compare Dr. Yuan Longping and Jane Goodall and find their similarities.Suggested answers1. 2. 3. 4. 5. 【教师寄语】 Time tries all. 路遥知马力，日久见人心。Unit 2 Working the land (period

12、3) 1. 扎实掌握1个单词,2个短语,2个句式；2. 自主学习,合作探究;学会分析与总结的方法,并能学以致用；【使用说明及学法指导】1. 老师引领学生积极动脑思考，结合所学知识自主构建知识体系。2. 探究总结疑难点并学以致用。3.部分词语用法参照练习册。 【课内探究】1. In 1974, he became the first cultural pioneer in the world to grow rice that has a high output.【考点】当名词被序数词，最高级修饰时，需用不定式做后置定语。【句式仿写】他总是第一个到教室最后一个离开。_2. Using his h

13、ybrid rice, farmers are producing harvests twice as large as before.【观察思考】(1) This building is twice higher than that one.(2) This building is twice as high as that one.(3) This building is twice the height of that one.(4) In 2010, the number of the students who had mobile phones was 10 times that o

14、f 2004.(5) In 2010, the number of the students who had mobile phones was 10 times what it was in 2004.【归纳】倍数表达法：(1) A +谓语动词+倍数+_+ _ + B(2) A +谓语动词+倍数+_ +_+ _ + B(3) A +谓语动词+倍数+ _ +_+ _ +B(4) A +谓语动词+倍数+_ + _ +B (5) A +谓语动词+倍数+_引导的名词性从句用至少三种方法翻译句子: 这个房间是那个房间的三倍大。_【知识运用】1. Nowadays some parents regret

15、 not _ more time with their kids when they were young.A. to spendB. spending C. spend D. being spent2. If I ruled the world, I would _ the world_wars.A. get rid of, by B. be rid of, by C. rid, of D. get fid, of3. The new stadium being built for the next Asian Games will be_ the present one. A. as th

16、ree times big as B. three times as big as C. as big as three times D. as big three times as4. The last one _pays the bill. Agreed! A. arrived B. arrives C. to arrive D. arriving【能力提升】Translate：在过去的五十年里，袁隆平一直努力寻找不用扩张土地面积来增加水稻产量的方法。后来他成了世界上第一个种植杂交水稻的人。多亏了他的努力，农民们种出的粮食是以前的两倍, 使得很多人摆脱了饥饿。他宁愿把精力集中在自己的爱好上

17、，因此，他对自己的生活感到很满意。_Unit 2 Working the land -Chemical or Organic Farming? Section 3 Using language (period 4)学习目标1.通过对文章的认真阅读，理解chemical farming 和organic farming的区别。2.通过自主学习、合作探究，掌握课文中重点短语、理解长难句型。 从课文中找出以下单词和短语。1 细菌 2. adj.化学的 3 n.生产4 .n. 总结，摘要 5 .n. 评论，议论） 对造成损害 7). 导致;造成(后果);通往8. 集中(注意力、精力)于 9. 每隔几年

18、10. 避免做 11 幸亏，由于12. 对感到满意 13 对感到困惑 14. 减少到 15. （vt./n. 遗憾、惋惜） （adj. 后悔的；遗憾的） （adv. 后悔地；遗憾地） 16. (n.发现、发觉)- （vt. 发现）17. （adj.化学的n.化学药品） （n.化学家、药剂师） （n.化学）18. （n.生产、制造） （v.生产、制造）- （n.产品、产物）19. n.营养 adj.有营养的【探究案】Step 1: Warming up1. Have you ever been to the countryside? 2. Do you know how to work on a

19、 farm?3. If you are a landowner, you want to grow some kinds of crops, what will you do?Step II ReadingTask 1 Scanning1. What is organic farming? 2. What is chemical farming? 3. What is the goal of using organic farming methods? Task 2 SkimmingFind out the main idea of these four paragraphs. Match t

20、he lines.P.1 Other methods to keep the soil fertile P.2 Farmers and customers turn to organic farming. P.3 Problems caused by chemical fertilizers P.4 Long-term use of chemical fertilizers can cause damage to the land and peoples health.Main idea of the passage._ can cause many problems, so _ _is be

21、coming more popular.Task 3 Careful reading1. Read the second paragraph and answer the following questionsWhat problems can be caused by using chemical fertilizers? In other words, whats the disadvantages of chemical fertilizers? 2. Read the third paragraph and write down the advantages of organic fa

22、rming. Step III Language points in the passage1. These chemicals in the food supply build up in peoples bodies over time.build up 增强; 建立；开发 Hard working conditions build up character. 艰苦的工作条件能磨练人的性格。He built up his strength again after an illness.他病后逐步恢复体力。2. Many of these chemicals can lead to canc

23、er or other illnesses.lead to: 导致；造成(后果）Too much work and too little rest often lead to illness.过量的工作和过少的休息会引起疾病。All roads lead to Rome. 条条大道通罗马。用lead to的适当形式完成句子。（1）. Students should always remember that hard work is the main way which _ success.（2）. The bad weather _ a terrible accident a few days

24、 ago.联想 result in引起(某种结果)、使获得(某种成果)、结果。如：The accident resulted in two deaths.result from由造成、因而产生。如：Sickness sometimes results from eating too much. 汉语意思_含介词to的东侧短语：come to 来到，苏醒refer to 参考， 涉及look forward to 盼望 pay attention to 注意stick to 坚持 devote to 致力于 turn to 求助于 get close to 靠近3. They focus on

25、keeping their soil rich and free of disease. 译_focus on:集中(注意力，精力等）于 .focus ones attention on 集中注意力于focus ones mind on 把心思集中到上You should _your attention _your work.你应该把注意力集中在你的工作上。He needs to _ more _his career. 他需要更集中于他的事业。4. reduce vt. 减少，减缩They have to reduce expenses this year.他们今年必须削减开支。搭配reduc

26、e to 减到，降到reduce by 减了， 降了Please reduce_ 2% off the invoice price.The water will freeze when the thermograph reduces _ zero centigrade.5. This also keeps the air, soil, water and crops free from chemicals.这样还可以让空气、土壤、水以及农作物不受化学物质的污染。keep free from/of使免受(影响/伤害等)Exercise can keep us free from disease.

27、 锻炼能使我们摆脱疾病。The United Nation is trying to _ the world _ _ the threat of war.联合国正试图使世界免受战争的威胁。6. Crops such as peas or soybeans put important minerals back into the soil, making it ready for crops such as wheat or corn that need rich and fertile soil. 分析 本句结构比较复杂。其主干结构为: 主句_+ 结果状语_状语中make 的宾语是_, 指代_, ready for crops such as wheat or corn 作_成分，that need rich and fertile soil 作_成分。7. Some organic farmers prefer planting grass between crops to prevent wind or water from carrying away the soil, and then leaving it in the g