必修4 Unit2 Working the land教学案 Model 4 Unit2 Working the land -----Reading主备人：周相存 审查人：周相存一．预习汇报二．学生自学，教师巡导Lead-inThe facts: 1. Today our world houses 6.55 billion people. 2. More than 800 million people go to bed hungry every day.Think about it: What should we do?——————————————————————————————————Pre-readingRice is the main food in all East Asian and Southeast Asian countries. What do you think would happen if tomorrow there was suddenly no rice to eat?____________________________________________________________________Fast-readingSkimmingPara1 A. Dr Yuan’s dreams. Para2 B. Dr Yuan’s personality. Para3 C. Dr Yuan’s biography. Para4 D. Dr Yuan’s appearance and his achievement. Scanning Find detailed informationName:________________ Nationality ___________________Age:_________________ Occupation:__________________Education:________________________________________________________Careful-readingPara.11. What does Dr.Yuan look like?__________________________________________________________________2. What is his achievement?__________________________________________________________________Para.21. Why did Dr. Yuan want to increase the rice output when he was young?_________________________________________________________________2. How does he help rid the world of hunger?_________________________________________________________________3. Put the following sentences in right order.a. He was born. b. He graduated from Southwest Agriculture college.c. Chinese farmers could only produced 50 million tons of rice.d. 200 million tons of rice was produced by growing his hybrid rice. e. He searched a way to increase rice outputs without expanding （扩大）the area of fields.f. He helps rid the world of hunger by circulating （传播）his knowledge in less developed countries.Proper order: _____→_____→_____→_____→_____→_____Para.31. Which of the following description about Dr Yuan’s personality is not true? A. He is satisfied with his life because he is now rich and famous. B. He cares little about money and fame. C. He would rather work than lead a comfortable life. D. He enjoys a simpler life than most rich and famous people.2. Find out his hobbies.________________________________________________________________Para.4Dr. Yuan’s two dreams.The first dream: ____________________________________________________________________________________________________________________________________The second dream: __________________________________________________________________练习：一． Summary. Dr.Yuan leads a simple life. He ___________ work on the farm _____ have a rest. He has struggled for five decades to search for a way to increase _____ output. He cares _____ about money and fame. Thanks to the discovery of _______________ , his dream of ridding China of ________ is realized. Now, he has another _______ ----to export his rice so that it can be grown all over the _____. Model 4 Unit2 Working the land -----Using language主备人：周相存 审查人：周相存一． 预习汇报二． Lead-inDo you know How many kinds of fertilizers farmers use?____________________________________________________三． Pre-readingDo you know about organic farming? ____________________________________________________Which kind do farmers use when they are doing organic farming?____________________________________________________四． Fast-reading:Skim and match the main idea with each paragraphPara.1 Problems caused by chemical fertilizers.Para.2 The advantages of Organic farmingPara.3 Other methods to keep the soil fertile.Para.4 The disadvantages of chemical fertilizers五． Careful-reading:Para.1 Why did farmers like to use chemical fertilizers?______________________________________________________________________Para.2 What problem can be caused by using chemical fertilizers?1. They damage the land by________________________________________________2.They can lead to _______________________________________________________3.Food may look beautiful, but inside ________________________________________Para.3 1. What is organic farming?______________________________________________________________________2. What do organic farmers prefer using?______________________________________________________________________Para.4Methods:◆Using _______ waste from animals as fertilizer◆Changing ______________ in each field every few years◆ Using _____________ of soil to plant crops◆ Planting _____ between crops 课后作业：背诵下列重点句子：1.Many of these chemicals can lead to cancer or other illnesses.2. They look beautiful, but inside there is usually more water than vitamins and minerals.3. They focus on keeping their soil rich and free of disease.4. A healthy soil reduces disease and helps crops grow strong and healthy.5. This also keeps the air, soil, water and crops free from chemicals. Model 4 Unit2 Working the land ---Language points主备人：周相存 审查人：周相存 一． P9 More than 800 million people go to bed hungry every day.hungry在本句中为形容词作_________, 描述_________的状态。
The old goat fell down to the ground dead. 此句中_______跟hungry的用法相同She was lying in bed awake all the night. 此句中_______跟hungry的用法相同▲划出下列句子中作状语的形容词，并翻译句子1)Overjoyed，he rushed out of the house．(2)Much interested，he agreed to give it a try.(3)Ripe（When ripe），these apples are sweet．(4)He spent 7days in the wind and snow，cold and hungry.(5)Helpless，we watched the house being destroyed before our eyes．三．P10 Using his hybrid rice, farmers are producing harvests twice as large as before. twice as large as 翻译为________, 是倍数的表达方式。
绿色通道P30)I have three times as many as you.The Yangtze River is almost twice longer than the Pearl River. The earth is 49 times the size of the moon.由以上句子，请归纳出表示倍数的表达方式 (1) A+be + ________ +as+ _________+as +BAsia is four times as large as Europe.(2) A + be +________+________+than+BAsia is three times larger than Europe.(3) A+be+________+the+名词(size/length/height/depth/width)+______+BAsia is four times the size of Europe.练习：仿照例句，用三种方式造句这张桌子是那张桌子的三倍长1)_________________________________________(2)_________________________________________(3)_________________________________________2. 珠穆朗玛峰(Mount Everest)比古剑山高7倍。
4)_________________________________________(5)_________________________________________(6)_________________________________________四．P10 He would much rather keep time for his hobbies.would rather do sth. _________________I’m not sure，but I'd rather think SO．I would rather believe him.拓展：1. would rather do...than do... = prefer doing to doing= prefer to do...rather than do... ___________________2. would do...rather than do...________________▲3. would rather (that)sb. did/had done_______________(虚拟语气)翻译下列句子：1. Tom would rather read than talk．=Tom prefers _________ to ___________=Tom prefers _________ rather than__________2. We would rather rent the house than buy it .=_________________________________=__________________________________3. I would buy a computer rather than a motor bike.4. I would rather you came tomorrow.▲5. 我宁可在家洗衣服而不愿去购物。
▲6. 我宁愿你昨天没有买那枚戒指▲7. 他宁愿死也不戒烟五．P10 In 1974, he became the first agricultural pioneer in the world to grow rice that has a high output. to grow rice 是动词不定式做__________,修饰__________.Three Americans became the first persons ever to cross the Atlantic by balloon.He is the best students to do the experiment.划线部分都在句中作_____________, 由上述句子可总结出，动词不定式常用在被_________, __________修饰的名词后做定语，且这些名词与动词不定式有逻辑上的__________关系1. 他总是最后离开办公室的人He is the last one ________ _________ _________ ________.2.她是第一个买车的人。
She is the first person ________ ______ _______ _________.1. 这是解决问题的最好方式This is the best way _______ _______ _______ _________.六．P10 Thanks to his research, the UN has more tools in the battle to rid the world of hunger. 1. thanks to 幸亏，由于Thanks toI had tied then the safety belt.Thanks to your explanation,it's clear to me now.多亏了你的帮助，我们成功了 _____ _______ ________ we were successful.▲同义辨析：due to: 用于较庄重的书面语中，侧重“起因于”，在句中多作表语，有时作状语owing to: 可以和due to换用，但在句中多作状语，也可作表语because of: 着重某个结果的原因，在句中通常作状语。
thanks to: 突出一种感激之情，含“多亏”意味2. rid v. 使摆脱It's not easy to rid oneself of a habit.He's gone,and I'm glad to be rid of him.We have to get rid of these old newspapers.由以上句子，可归纳出rid的搭配：1) __________________2) __________________3) __________________七．P13 regret We've always regretted selling the farm.I regret to tell you that you can't sign your name on the paper.I feel no regret about the choice I had made.由以上两句，可归纳出regret的搭配:_____________________________________________1. 很遗憾地告诉你，你已经被解雇了。
I ______ _______ _______ you that you have been dismissed.2. 我相信你会为离开巴黎而后悔的I believe you will ________ _______ Paris.3. 我后悔没有听她的劝告I _______ ______ ________ her advice.4. 他说他对离开大学并不后悔He said he had no ________ ________ _________the university.拓展：动词不定式或动名词都可做宾语的动词和词组： stop, mean, try, be afraid of, remember, forget, allow/permit/advise sb. to do/doing 八．P14 They focus on keeping their soil rich and free of disease. 1. focus on _____________The noise made it hard for me to focus on work.2. 猜猜划线短语的意思：For me, your explanation is a bit out of focus.I got her in focus before I took the photo.in focus _____________out of focus____________3. 找出同义短语You must focus on your teacher in the class. You must pay attention to your teacher in the class. You must concentrate on your teacher in the class.九．P14 This also keeps the air, soil, water and crops free from chemicals. Keep … free from/of __________________这种药可以止头痛。
This medicine can ______ you _______ ______headache. 拓展：1. free from/of 免于，没有，不受...影响 此处的free是adjHe is free from any sense of responsibility.The town is free from pollution.At last he was free of his sister.2. free...from/of... 把...从...消除/解除These exercises free the body of tension.1)把表面盖好，以免尘土落在上面Keep the surface ______ ________ dirt ______ putting a cover over it.2)我们一定要让世界摆脱饥饿We must ________ _______ ________ ______ hunger.3) 街上的落叶已打扫干净了The streets have been swept ________ _______ leaves.练习：1. I’v tried very hard to improve my English. But by no means _______ with my progress.A. the teacher is not satisfied B. is the teacher not satisfiedC. the teacher is satisfied D. is the teacher satisfied2. -What a mistake! -Yes. I _____ his doing it another way, but without success．A. was suggesting B. will suggestC. would suggest D. had suggest3. ________ a new policy, we are now living a happy life.A. Thanks to B. Because C. For D. Thanks for4. Dina, _______ for months to find a job as a waitress, finally took a position at a local advertising agency.A. struggling B. struggled C. having struggled D. to struggle5. -Shall we go skating or stay at home? -Which_______ do?A. would you rather B. do you rather C. will you rather D. should you rather6. The house was too expensive and too big._______, I’d grown fond of our little rented house.A. Besides B. Therefore C. Somehow D. Otherwise 7. The new stadium being built for the next Asian Games will be _____ the present one.A. as three times big as B. three times as big asC. as big as three times D. as big three times as8. -Robert is indeed a wise man.-Oh, yes. How often I have regretted ______ his advice!A. to take B. taking C. not to take D. not taking9. Practising Chinese kung fu can not only _______one’s strength, but also develop one’s character.A. bring up B. take up C. build up D. pull up10. E-mail, as well as telephones,_______ an important part in daily communication.A. is playing B. have played C. are playing D. play11. -Did you hear what the lady said? - No, I heard nothing. My attention ________the speaker’s beautiful dress.A. was focused on B. paid to C. was focused to D. devoted to12. Relaxation exercises can keep your body _______ tension.A. free up B. free from C. free for D. free withModel 4 Unit2 Working the land ---Grammar主备人：周相存 审查人：周相存早读任务： P96 Unit2 单词 P10 reading 优化设计unit2 语法预习：1. 找出课文中下列句子。
1) Since then, finding ways to grow more rice has been his life goal.(2) As a young man, he saw the great need for increasing the rice output.(3) He enjoys listening to violin music, playing mahjong, swimming and reading.(4) Spending money on himself or leading a comfortable life also means very little to him.2. 在上述句子中，勾出V-ing结构，并指出它们在句中作什么成分课堂活动：一． V-ing form1 Listening to music is one of my favorite hobbies.2 Joan suggested asking her father for his opinion.3 The man left the party without saying goodbye to the host.4 The squirrel was lucky that it missed being caught.5 I remember having told him the news.6 Peter’s being late made the teacher angry.仔细观察以上句子，V-ing在这些句子中相当于_____词的作用，但是又有动词的特征。
在句子中作_______和_________成分动词-ing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, 还有时态和语态的变化二． V-ing做主语1) To him, swimming is much fun.2) Walking in step is not easy.3) It's no use complaining.4) It's no good worrying about it.5) It's worthwhile making the experiment.6) Not having been trained as a dancer is my one regret.勾出V-ing并归纳：1. V-ing 做主语，谓语动词用______数2. 3),4),5)句中，it是__________,真正的主语是__________.句型1. It+be +no use/ no good/ useless doing 做...是没有用的/没有好处的句型2. It +be+ worthwhile/ a waste of time (in)doing 做....是值得的/浪费时间的3. 有时态和语态的变化。
否定形式为______________ 语态时态主动语态被动语态一般式doing完成式Having been done练习：完成P13 exercise 2三． V-ing做宾语1) As a young man, he saw the great need for increasing the rice output.2) Dr Yuan searched for a way to increase rice harvests without expanding the area of the fields.3) He enjoys listening to violin music, playing mah-jong, swimming and reading.4) Dr Yuan awoke from his dream with the hope of producing a kind of rice that could feed more people.勾出V-ing并归纳：V-ing既可作_______词的宾语，也可作_______词的宾语。
♥常跟V-ing做宾语的词和词组：admit, advise, allow, appreciate, avoid, can't help, consider, delay, devote...to..., dislike, enjoy, escape, excuse, feel like, finish, forbid, forgive, get down to, give up, imagine, insist on, keep on, look forward to, mention, mind, miss(错过), pay attention to, permit, practise, put off, stick to, suggest等拓展：1. 有的动词后既可接V-ing，也可跟to do结构，但意义不同详见绿色通道P39-40）2. (1)The window needs cleaning. (2)The window needs to be clean.翻译这两句话并比较, (1)句是_________语态，(2)句式___________语态，但其意思都一样。
1)句是主动形式表示被动意思Need，want，require表示“需要”的时候，都可接V-ing，主动表被动need/ want/ require to be done = need/ want/ require doingMy old coat needs to be patched up. = My old coat needs _____________.The radio wants to be repaired. =_________________________________▲3. (1)Their coming to help was a great encouragement to me. (2)I certainly enjoy Tom’s singing. (3)I don’t mind Tom / him going. (4)I don’t like young people /them smoking.这是V-ing的复合结构请根据以上句子归纳出V-ing复合结构的形式： (1)__________________________ (2)__________________________ (3)__________________________ (4)__________________________练习：(1)Do you mind_______?我抽烟你介意吗？(2)_________will get us out of trouble.约翰的到来将会使我们脱离困境(3)_________made her teacher angry. (此时不可用Mary) 玛丽的迟到使她的老师很生气(4)I am not in favour of_______. 我不赞成妈妈卖掉旧房子?(5)Her parents insisted on ______她父母坚持要她学医。
6)We suggested___________. 我们建议他妹妹去看病?。