book4unit2(修订)

Unit 2 Working the landPart I a Pioneer for all PeopleAlthough he is one of China’s most famous scientists, Yuan Longping consider s himself a farmer, for he works the land to do his research. Indeed, his sunburnt face and arms and his slim, strong body are just like those of millions of Chinese farmers, for whom he has struggle d for the past five decade s. Dr Yuan Longping grows what is called super hybrid rice. In 1974, he became the first agricultural pioneer in the world to grow rice that has a high output. This special strain of rice makes it possible to produce one-third more of the crop in the same field s. Now more than 60% of the rice produced in China each year is from this hybrid strain.Born in 1930, Dr Yuan graduate d from Southwest Agricultural College in 1953. Since then, finding ways to grow more rice has been his life goal. As a young man, he saw the great need for increasing the rice output. At that time, hunger was a disturbing problem in many parts of the countryside. Dr Yuan search ed for a way to increase rice harvest s without expand ing the area of the fields. In 1950, Chinese farmers could produce only fifty million tons of rice. In a recent harvest, however, nearly two hundred million tons of rice was produce d. These increased harvests mean that 22% of the world’s people are fed from just 7% of the farmland in China. Dr Yuan is now circulating his knowledge in India, Vietnam and many other less developed countries to increase their rice harvests. Thanks to his research, the UN has more tool s in the battle to rid the world of hunger. Using his hybrid rice, farmers are producing harvests twice as large as before.Dr Yuan is quite satisfied with his life. However, he doesn’t care about being famous. He feel s it gives him less freedom to do his research. He would much rather keep time for his hobbies. He enjoy s listening to violin music, playing mah-jong, swimming and reading. Spend ing money on himself or lead ing a comfortable life also means very little to him. Indeed, he believe s that a person with too much money has more rather than fewer trouble s. He therefore gives millions of yuan to equip others for their research in agriculture.Just dream ing for things, however, cost s nothing. Long ago Dr yuan had a dream about rice plants 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. Dr Yuan awoke from his dream with the hope of producing a kind of rice that could feed more people. Now, many years later, Dr Yuan has another dream: to export his rice so that it can be grown around the globe. One dream is not always enough, especially for a person who loves and cares for his people.Part II Chemical or Organic Farming?Over the past half century, using chemical fertilizers has become very common in farming. Many farmers welcome d them as a great way to stop crop disease and increase production. Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to people’s health.What are some of the problems caused by chemical fertilizers? First, they damage the land by kill ing the helpful bacteria and pests as well as the harmful ones. Chemicals also stay in the ground and underground water for a long time. This affect s crops and, therefore, animals and humans, since chemicals get inside the crops and cannot just be wash ed off. These chemicals in the food supply build up in people’s bodies over time. Many of these chemicals can lead to cancer or other illnesses. In addition, fruit, vegetable s and other food grown with chemical fertilizers usually grow too fast to be full of much nutrition. They may look beautiful, but inside there is usually more water than vitamin s and mineral s.With these discover ies, some farmers and many customer s are beginning to turn to organic farming. Organic farming is simply farming without using any chemicals. They focus on keeping their soil rich and free of disease. A healthy soil reduce s disease and helps crops grow strong and healthy. Organic farmers, therefore, often prefer using natural waste from animals as fertilizer. They feel that this makes the soil in their fields richer in minerals and so more fertile. This also keeps the air, soil, water and crops free from chemicals.Organic farmers also use many other method s to keep the soil fertile. They often change the kind of crop in each field every few years, for example, growing corn or wheat and then the next year peas or soybeans. Crops such as peas or soybeans put important mineral s back into the soil, making it ready for crops such as wheat or corn that need rich and fertile soil. Organic farmers also plant crops to use different level s of soil, for example, planting peanuts that use the ground’s surface followed by vegetables that put down deep root s. Some organic farmers prefer planting grass between crops to prevent wind or water from carry ing away the soil, and then leaving it in the ground to become a natural fertilizer for the next year’s crop. These many different organic farming methods have the same goal: to grow good food and avoid damaging the environment or people’s health.。

必修四Unit 2 Working the Land耕耘II．Reading A PIONEER FOR ALL PEOPLE所有人的开拓者Although he is one of China’s most famous scientists, Yuan Longping considers himself a farmer, for he works the land to do his research.尽管袁隆平是一位中国最著名的科学家，但他却认为自己是一位农民，因为为了研究他要耕耘。

【注释：for引导的分句通常对前一个分句所说的话加以解释，提供判断的理由，但这个理由并非是真正的内在的原因。

如：The day breaks, for the birds are singing.天亮了，因为鸟在歌唱。

试题：It’s dark now, _____ the street lights are on. A. because B. as C. since D. for 】Indeed, his sunburnt face and arms and his slim, strong body a re just like those of millions of Chinese farmers, for whom he has struggled for the past five decades.的确，他那黑黝黝的脸庞和胳膊以及他那瘦小而强壮的身躯正像千千万万个中国农民一样，就是为他们，他已经奋斗了五十年。

【注释：①be like象：以…的典型方式eg. It's not like you to take offense.你不象会发脾气的人. ②struggle for为…而斗争；struggle to do sth.艰难地做某事，挣扎做某事；struggle against与…作斗争；struggle with和…作斗争；struggle to on e’s knees挣扎着跪下；struggle to one’s feet挣扎着站起来；struggle through the snowstorm 冒着暴风雪前进；struggle on挣扎着；坚持下去；eg. 1) He struggled for the national independence.他为民族的独立而奋斗。

Book 4 Unit 2重点短语讲解1. Dr Yuan searched for a way to increase rice harvests without expanding the area of the fields. (P10)【归纳】search for 意思是“寻找，搜寻”。

【延伸】search into调查；search out寻找到；search through 把……仔细搜寻一遍；search one’s memory 寻思，追忆；search one’s heart 扪心自问；in search of 寻找，寻求。

【易错点】search some place意为“在某地搜查”；search for sth 意为“寻找某物”；如：s earch sb 搜身；search for sb 寻找某人。

2. Dr Yuan is quite satisfied with his life. (P10)【归纳】be satisfied with意为“对……感到满意”。

【延伸】to one’s satisfaction 使某人满意的是；in satisfaction 满意地；satisf y sb that使相信……；satisfie d one’s doubt消除某人的疑虑。

【易错点】satisfactory / satisfy-ing：都是“令人（感觉到）满意的”意思，其句中的主语或修饰的名词大都是表示事物的名词，两者一般可以换用。

而satisfied意为“满意的”，是人的主观感受，其句中的主语或修饰的名词一般都是表示人的名词。

3. He would much rather keep time for his hobbies. (P10)【归纳】would rather意思是“宁愿”，后接动词原形，没有人称和数的变化。

【延伸】would rather do宁愿做某事；would rather have done表示过去的想法，通常可译为“(本来)宁愿做某事；I’d rather not，表示委婉的不同意，意为“我宁愿不……”；prefer to do rather than do宁愿……而不愿……；prefer doing to doing宁愿……而不愿……。

Book 4 Unit 2 Sports events晨读暮诵单元话题——文娱与体育1．theatre n．剧院2．culture n．文化3．museum n．博物馆4．traditional adj.传统的5．beneficial adj.有益的6．voluntary adj.志愿的7．activity n．活动8．coach n．教练9．athlete n．运动员10．audience n．听众，观众11．championship n．锦标赛12．judge n．裁判13．event n．事件；大事14．stadium n．(露天大型)体育场15．gold medal金牌16．run against和……赛跑17．have fun with玩得开心18．be faced with面对19．build up one's body增强体质20．fall behind落后1．For one thing，running can cheer us up；for another，it can keep us healthy. 一方面，跑步可以使我们开心；另一方面，它可以使我们保持健康。

2．You will fall behind unless you start working hard from now on.除非你从现在开始努力，不然你将会落后。

3．We all had to take part in the training run，with nobody excepted.我们大家都得参加跑步训练，无人例外。

4．All the players compete for honor as well as gold medals.运动员们为金牌而战也为荣誉而战。

(2017·高考北京卷)你的英国朋友Jim所在的学校要组织学生来中国旅行，有两条线路可以选择：“长江之行”或者“泰山之旅”。