1、人教版高一英语必修四Unit2Working-the-land全单元精品课件What are they doing?They are planting the rice.What are they doing?seedingfertilizing(施肥施肥)transplanting (插秧插秧)irrigating (灌溉灌溉)What are they doing?harvestingwinnowing (扬扬 谷谷)rice Lets see a video about how to plant.PoemBy Li ShenFarmers weeding at noon,Sweat do
2、wn the field soon.Who knows food on a tray,Due to their toiling day.wheatcornricesoybeancottonbroomcorn TerraceDroughtIrrigated landGreenhouseDo something to help end hunger in the world!In the late 1990s,Brown,an American scholar,came up with the theory of Chinese Menace(威胁威胁),which said that in th
3、e 2030s,Chinese population will add up to 1.6 billion,and had the question who would feed the large population in China as well as in the world.Just at that time,a Chinese scientist declared to the world that China can solve the problem by himself and help to solve the same problem in the world.Yuan
4、 Longping“Father of Hybrid Rice”Father of Hybrid RiceYuan LongpingA Pioneer for All PeopleKnowledge Goals TopicImportant people,history and methods of agricultureWords and ExpressionsWords:Statistics,root,output,expand,mineral,sun burnt,decade,super,crop,hunger,equip,chemical,regret,focus,soil,skim,
5、bacteria,struggle,occupation,rid,grain,export,nutrition,comment,freedom,reduce,discovery,confuse,circulate,expand,nationality,disturbing,therefore,summary,underline,battle.Expressions:in many ways,struggle for,make it,possible to,search for,thanks to,rid of,be satisfied with,care little about,equipw
6、ith,no longer,awake from,be suitable for,take turns,refer to,insist on,exchangewithFunctional ItemsGrammarHow to persuade others?Learn to use these sentence types:Id preferbecause.Its better to.and so on.Learn the ing form as the subject and object.Ability GoalsnLearn the basic knowledge about count
7、ry,agriculture and cultivation of grains；nGet go know Dr.Yuan Longping s research achievement and the significance of organic cultivation;nEnable to grasp how to persuade others and how to design English poster.Emotion GoalsnRecognize the practical research spirit of Dr.Yuan.Important and Difficult
8、PointsImportant PointsnTry to understand the research of Yuan;nGrasp the new words about agriculture;nLearn the ing form as the subject and subject.Difficult Pointsn Grasp the appropriate reading skills,such as close reading,word-guessing and paraphrasing;nThe correct usage of ing form as subject an
9、d object.He is father of hybrid rice(杂交水稻），杂交水稻），who was lately awarded“the Nobel Prize of Asia”.He received the honor for his great contributions(贡献）贡献）to hybrid rice research and work he did to improve rice production in developing countries.Now he is head of the National Hybrid Rice Research and
10、Development Center in Hunan Province,China(中国湖南省国家杂中国湖南省国家杂交水稻研究与发展中心交水稻研究与发展中心).He is called a pioneer for all people.Dr Yuan Longping(袁隆平博士）袁隆平博士）Please enjoy ita video about Yuan Longping.Have you ever grown any plants?If so,what did you do to grow them?First we ploughed the soil deep.Second we p
11、ut the seeds into the tunnel.Finally we covered the deeds by ploughing again.They are ploughing the soil.Read the statistics below.Did you know these facts before?What can you get from it?International Facts on Hungerand Poverty(2002)u Every eight seconds,a child somewhere in the world dies from sta
12、rvation.More than 6 million children under the age of 5 die from starvation every year.u More than 800 million people in the world suffer from chronic malnutrition799 million of them are from the developing world.More than 153 million of them are under the age of 5.u Some 700,000 central Americans a
13、re suffering from hunger today,including 6,000 children at risk of starving to death.u The African countries suffering most severely from food shortage are Malawi,Lesotho,Mozambique,Swaziland,Zambia and Zimbabwe.Look at the title of the passage and listen to it.How do you know about the grain condit
14、ion in the world?1.Who is the person?Yuan LongpingTask 1 Skimming2.What did he do?/What is he doing?a.He searched for a way to increase rice output without expanding the area of fields.b.He is now circulating his knowledge in India,Vietnam and many other less developed countries to increase their ri
15、ce harvest.A.a farmer named Yuan Longping B.how Yuan Longping became rich and famousC.an agricultural pioneer named Yuan Longping who worked hard to produce a new strain of rice D.a new strain of rice which is called super hybrid rice Which of the following statements tells the main idea of the text
16、?It s about_What is the main idea of each paragraph?Para1Para2Para3para4His dreamsHis personalityHow he thinks of himself and his achievementHis biographyTask 2 Scanning Para1-2:A.is among the first to go into an area to live or work there.B.goes into unknown regions,such as outer space.C.is the fir
17、st to study a new area of knowledge.A pioneer is a person whosuper hybrid rice a high output This special strain of rice makes it possible to produce one third more of the crop in the same fields.a.He was born into a poor farmers family.b.He graduated from Southwest Agriculture college.c.In 1950,Chi
18、nese farmers produced 5.5 billion tons of rice.d.20 billon tons of rice was produced by growing his hybrid rice.e.He searched a way to increase rice outputs without expanding the area of fields.f.He helps rid the world of hunger by circulating his knowledge in less developed countries.Proper order:P
19、ut Dr Yuans biography in right order.acbedfWhat kind of life is Dr Yuan?Dr Yuan is leading a simple life,doing his research,listening to his music and riding his motor-bike.Which of the following description about Dr Yuans personality（个性）（个性）is not true?A.He is satisfied with his life because he is
20、now rich and famous.B.He cares little about money and fame（名（名声）声）.C.He would rather work than lead a comfortable life.D.He enjoys a simpler life than most rich and famous people.What were his dreams?1.To produce a kind of rice to feed more peopleRice plant as tall as sorghumEar of rice as big as ea
21、r of cornGrain of rice as huge as a peanut2.To see his rice grownall over the world1.What does“Wishing for things,however,costs nothing”mean?2.What did Dr Yuans rice look like in his dream?3.Dr Yuan has dreams not only when he is _ but also when he is_.asleepawake Dreams are free and everybody can h
22、ave ideas about what they would like their future life to be.The rice plants were as tall as sorghum.Each ear of rice was as big as an ear of corn and each grain of rice was as huge as a peanut.4.Dr Yuan thinks that a person with too much money has more rather than fewer troubles.Do you agree or dis
23、agree?Why?I mostly agree.I think being rich can cause a lot of problem,but it really depends on the life and attitude of the person who is rich.People who are rich certainly have different problems from people who are not.Discussing 1:Even if Dr.Yuans dreams come true,can this really solve starvatio
24、n?Discuss in groups of four.What advantages and disadvantages do you see in Yuan Longping s life?Would you like to have a life like his?Why or why not?2:3:How to solve hunger?Making good use of the waste land;Developing the technology to Inventing a new kind of foodImproving the quality of the soil;
25、Preventing the pests from eating our crops;adj.化学的；关于化学的化学的；关于化学的n.生产；制造生产；制造n.细菌细菌n.害虫；害兽；害鸟害虫；害兽；害鸟n.营养；滋养；食物营养；滋养；食物n.矿物；矿石矿物；矿石Words preview chemical production bacteria pest nutrition mineralWords preview skim underline summary commentvt.浏览；略读浏览；略读vt.画底线标出；强调画底线标出；强调n.总结；摘要；概要总结；摘要；概要n.评论；议论评论；
26、议论vi.&vt.表达意见表达意见;做出评论做出评论n.发现；发觉发现；发觉n.焦点；中心点焦点；中心点vt.集中；聚焦集中；聚焦n.土壤土壤vt.减少；减缩减少；减缩n.根；根源根；根源Words preview discovery focus soil reduce root逐渐增强逐渐增强;建立建立;开发开发导致导致;造成造成(后果后果)集中集中(注意力，精力等注意力，精力等)于于使使免受免受(影响，伤害等影响，伤害等)；使使不含不含(有害物有害物)Expressions preview build up lead to focus on keep free from/ofBrainst
27、orming Brainstorming Organic FarmingListen this passage Click here!Long-term use of chemical fertilizers can cause damage to the land and peoples health.Farmers and customers turn to organic farming.Other methods to keep the soil fertile.Skimming Problems caused by chemical fertilizersP1.P2.P3.P4.Re
28、ad the passage and answer the following questions.1.What is the main idea of this passage?This passage tells us something aboutorganic farming.It means growing crops without chemical fertilizers which damagethe soil.The organic farmers keep thesoil rich and healthy in several ways.Scanning 2.What ar
29、e genetically-modified foods?The term GM foods or GMOs(genetically-modified organisms)is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques.These plants have been modified in the laboratory to enhance desired traits such a
30、s increased resistance to herbicides or improved nutritional content very rapidly and with great accuracy.For example,plant geneticists can isolate a gene responsible for drought tolerance and insert that gene into a different plant.The new genetically-modified plant will gain drought tolerance as w
31、ell.3.What are some of the advantages of GM foods?The world population has topped 6 billion people and is predicted to double in the next 50 years.Ensuring an adequate food supply for this booming population is going to be a major challenge in the years to come.GM foods promise to meet this need in
32、a number of ways:(1)Pest resistance;(2)Disease resistance;(3)Cold tolerance;(4)Droughttolerance/salinitytolerance;(5)Nutrition.Thirteen countries grew genetically-engineered crops commercially in 2000,and of these,the U.S.produced the majority.In 2000,68%of all GM crops were grown by U.S.farmers.In
33、comparison,Argentina,Canada and China produced only 23%,7%and 1%,respectively.Soybeans and corn are the top two most widely grown crops(82%of all GM crops harvested in 2000).4.What are some of the criticisms against GM foods?Environmental hazards,human health risks,and economic concerns.Reading adva
34、ntages problems cause 1.Have you ever grown any plants?If 1.Have you ever grown any plants?If so,so,what did you do to grow them?what did you do to grow them?if so=if you have ever grown some plants.so so 表示表示“像那样的，如前所说的像那样的，如前所说的”，用于代，用于代替已陈述的事。如：替已陈述的事。如：can you pass the exam?I hope so.(1)辨析辨析beca
35、use,for,since,as because表示理由充分表示理由充分,有必然因果关系有必然因果关系,能回答以能回答以why引起的问句因果语气最强。引起的问句因果语气最强。2.He wants everyone to call him a 2.He wants everyone to call him a farmer,farmer,forfor thats how he regards thats how he regards himself.himself.Why arent you coming with us to the concert?Because I have got a b
36、ad headache.你为何不与我们一起去听音乐会？你为何不与我们一起去听音乐会？因为我头痛。因为我头痛。since(既然）既然）,一般表示对方已知的，无须加以说明的一般表示对方已知的，无须加以说明的既成事实的理由，全句中心在主句，语气比既成事实的理由，全句中心在主句，语气比 because弱弱;as(由于）由于）,表示十分明显的原因，一般说明因果关系，表示十分明显的原因，一般说明因果关系，着重点在主句，语气较弱着重点在主句，语气较弱;for(因为，其理由是）因为，其理由是）,是个并列是个并列连词，只能放在另一个并列句后面，表示推理或解释，或连词，只能放在另一个并列句后面，表示推理或解释，或
37、用作附加说明，表示新的情况，而不是指理由或原因，语用作附加说明，表示新的情况，而不是指理由或原因，语气最弱，一般不放在句首。如气最弱，一般不放在句首。如:Since you are ill,Ill go alone.As it is snowing,we shall not go to the park.The day breaks,for the birds are singing._ he says so,it must be true._ it was late,I made haste to go.The day breaks _ the sun rises.The day break
38、s,_ the birds are singing.SinceAs becausefor 注意：注意：for表示因果关系时，可以同表示因果关系时，可以同because交替使用，交替使用，但但for前须用逗号，而前须用逗号，而because则不必。如：则不必。如：You couldnt have seen him because he wasnt there.=You couldnt have seen him,for he wasnt there.当原因是显而易见的或已为人们所知，就用当原因是显而易见的或已为人们所知，就用as或或since，且多放在句首。如：且多放在句首。如：Since/As
39、 the weather is so bad,we have to delay our journey.(2)regard regard.as.;将将.认为认为 We regarded her as the best writer among us.in/with regard to sb./sth.关于关于,至于至于 a countrys laws in regard to human rights 一个国家关于人权的法律一个国家关于人权的法律 3.3.worksworks the land the land work vi./vt.经营经营,管理管理 He works a big farm
40、.他经营着一个大的农场。他经营着一个大的农场。4.In many ways,he is one of them,4.In many ways,he is one of them,and he has and he has struggled struggled for the past for the past five decadesfive decades to help them.to help them.常与现在完成时连用的时间状语常与现在完成时连用的时间状语 (1)already,yet,ever,just,recently,lately,never,before(adv.)The
41、boy has already/just got home.I havent heard from him yet/recently/lately.I have seen the old man somewhere before.I havent heard from him yet/recently/lately.I have seen the old man somewhere before.(2)since/for I have lived in Beijing since 2000.I have lived in Beijing since I arrived here.I have
42、lived in Beijing for 5 years.struggle vi.搏斗搏斗,挣扎挣扎,努力努力,拼搏拼搏They were struggling to get out the burning car.他们挣扎着从烧着的车里往外爬。他们挣扎着从烧着的车里往外爬。struggle against 与与斗争，为反对斗争，为反对而斗争而斗争struggle for 为争取为争取而斗争而斗争 5.This special strain of rice makes 5.This special strain of rice makes it it possible to produce o
43、ne-third possible to produce one-third more of the crop in the same fields.more of the crop in the same fields.it 在句中作形式宾语在句中作形式宾语,真正的宾语为真正的宾语为to produce,结构为结构为:动词动词(make,feel,think,regard)+it+adj+to do.如：如：We think it important to learn English well.6.6.Thanks toThanks to his research,the UN has hi
44、s research,the UN has more tools in the battle to more tools in the battle to ridrid the the world world ofof hunger.hunger.(1)thanks to表示表示“幸亏幸亏,多亏多亏”多用于表达多用于表达正面意思正面意思,表示原因表示原因,后接名词或名词性的短语在后接名词或名词性的短语在句中作状语。如句中作状语。如:Thanks to your help，much trouble was saved.多亏你的帮助多亏你的帮助,减少了许多麻烦。减少了许多麻烦。Animals li
45、ving environments have been getting worse _ the increase in industrial pollution.A.thanks to B.because C.as D.since(2)ridof 使使摆脱摆脱/清除清除rid a house of mice 清除室内老鼠清除室内老鼠rid oneself of debt 还清债务还清债务类似用法的动词类似用法的动词：inform/warn/cureof,The sales manager asked his men to inform him of everything concerning
46、the sales in time.销售部经理让他手下的人把关于销售量的情销售部经理让他手下的人把关于销售量的情况及时报告他。况及时报告他。1.Wordschemical rid regret hunger statistics expand Vietnam struggle super crop disturbing circulatedecade equip production pest nutrition summary focus mineral root skim underline discovery bacteria nationality confuse output bat
47、tle comment therefore export sunburnwould rather build upfocus on ridofthanks to lead tobe satisfied with keepfree from/ofmake it possible to care little aboutequipwith take turns2.ExpressionsFill in the blanks with correct phrases.His mistakes _ his failure.Please _ your mind_ the following problem
48、.5.Children should _ violence.3.Structures Usage of v-ing form as subject and object LOVEBy John Lennon Love is real;real is love.Love is _;_ love.Love is _ to be loved.Love is touch;touch is love.Love is _;_ love.Love is _ to be loved.Love is you,you and me.Love is _ we can be.Love is free;free is
49、love.Love is _;_ love.Love is _ to be loved.feelingfeelingwantingreachingreachingaskingknowingleavingleavingneeding(1)(1)性质：性质：它具有动词的特点，但在句子中起着它具有动词的特点，但在句子中起着名词、形容词、副词的作用，充当主语、名词、形容词、副词的作用，充当主语、表语、定语、宾语、宾语补足语、状语的表语、定语、宾语、宾语补足语、状语的作用，即：除谓语以外一切成分作用，即：除谓语以外一切成分。（2 2）语法特征：）语法特征：动词动词-ing-ing形式不能单独作谓语，没有
50、人形式不能单独作谓语，没有人称和数的变化，但可以有自己的宾语和状语，称和数的变化，但可以有自己的宾语和状语，还有时态和语态的变化。还有时态和语态的变化。一般式：一般式：动词动词-ing形式的一般式可用来泛指一个动形式的一般式可用来泛指一个动作，没有特别的时间意义。作，没有特别的时间意义。动词动词-ing形式的一般式可用来表示与谓语形式的一般式可用来表示与谓语动词同时发生的动作。动词同时发生的动作。动词动词-ing形式的一般式有时也可表示在谓形式的一般式有时也可表示在谓语动词的动作之前或之后发生的动作。语动词的动作之前或之后发生的动作。完成式：完成式：动词动词-ing形式的完成式表示一个已完成的
