人教版高中英语 必修4unit2 教学案.doc

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 Yuans dreams. Para2 B. Dr Yuans personality. Para3 C. Dr Yuans biography. Para4 D. Dr Yuans 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 Yuans 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. Yuans 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 fertilizerChanging _ 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. _Im not sure，but Id rather think SOI 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,its 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Its not easy to rid oneself of a habit.Hes gone,and Im 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 Weve always regretted selling the farm.I regret to tell you that you cant 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. Iv 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 successA. 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._, Id 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 _ones strength, but also develop ones 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 speakers 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：1 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 Peters 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。2 V-ing做主语1) To him, swimming is much fun.2) Walking in step is not easy.3) Its no use complaining.4) Its no good worrying about it.5) Its 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 23 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 ric