高中英語 Unit2 Working the land listening using language課件 新人教版必修4.ppt

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Unit 2,Using language,Working the land,Revision. (personal information),Name: Nationality: Born: Occupation: Education: Dream:,Yuan Longping,Chinese,in 1931; in a poor family,a scientist/farmer,Southwest Agriculture College,1.saw rice plants as tall as sorghum 2. to export his rice,Achievements:,Hobbies:,Personal information.,Using language Reading,Organic Farming,Discussion,What is the meaning of this title? What is the advantages of having “green food”? How can farmers produce organic food?,Listening. (True or False).,All farming must be organic farming.( ) All fertilizers can make the soil fertile and rich, so they are the same. ( ) The organic farmers prefer to use natural waste from animals only because they are cheap . ( ) The soil gets exhausted because farmers grow different crops. ( ) Organic farmers insist on changing crops every second or third year. ( ),T,F,F,F,F,Read and answer:,What is the main idea of this passage? This passage tells us something about… organic farming. It means growing crops without chemical fertilizers which damage the soil. The organic farmers keep the soil rich and healthy in several ways. For example…,1. What is the organic farming? Organic farming refers to crops growing with natural rather than chemical fertilizers.,Read the passage and answer the following questions.,2. Why do organic farmers grow peas or soybeans after corn or wheat? Farmers grow peas or soybeans after corn or wheat so that peas and beans can put minerals back into the soil, making it rich and healthy and ready to grow more wheat or corn.,3. What is the disadvantage of using chemical fertilizers? There are three disadvantages. Firstly, leaving chemicals in the ground for a long time is not good for the soil or the water supply.,Secondly, farmers often grow the same crop year after year. As a result, the soil gets exhausted. Thirdly, chemical fertilizers kill both helpful and harmful bacteria and pests.,Match the advantages with the reasons.,2. The soil is not exhausted.,3. They make full use of the soil.,C. The soil is richer in minerals.,A. Peas and soybeans renew the minerals in the soil.,B. They plant different crops, and keep the soil.,1. They use waste from animals.,,,,Knowledge points:,refer to be rich in reduce food/water supply insist on doing/that every two or three years every second or third year carry away/out /on,,be poor in,,increase,,Make up sentences using the above phrases.,I think we are all rich in energy and time, but we should reduce any waste of time. I insist on making a plan for my studies and life, and always write a summery every two or three weeks. If I have some difficulty, I often refer to the plan. In this way, I can carry out my plan at last.,Fruits’ expressions.,Match the words with the pictures.,carrot,pimiento,cucumber,pea,strawberry,pumpkin,aubergine,tomato,,,,,,,,,Language points,1. It also refers to crops growing with natural rather than chemical fertilizers. to be relevant to sb./sth. 與……有關(guān) What I have to say refers to all of you. 我要說的事和你們大家都有關(guān)。,refer to.as 將稱為 refer sb. to. 讓某人參考或求助于 2. to mention sb/sth 提到、說到 In his speech, he didn’t refer to the problem at all. 在他的演說中絲毫未觸及那個問題。 3. Firstly, leaving chemicals in the ground for a long time is not good for the soil or the water supply.,supply. 1) 用作名詞時： a) 指“供給;供應(yīng)”等,其反義詞為demand (需求)。 supply and demand 供與求 be in short supply 供應(yīng)缺乏,供應(yīng)不足 food supply 食物供應(yīng) water supply 供水,b) 當“供應(yīng)品;生活用品;補給品”等,常用復數(shù)supplies。 military supplies 軍需品 household supplies 家庭用品 medical supplies 醫(yī)用品,2) 用作動詞時,指“供給,提供,備辦”等, supply sb. (with) sth. , supply sth. to /for sb. -- They supplied food to/for them. 他們供給他食物。 -- The library is well supplied with books. 圖書館備有充足的書籍。,3. But whatever they grow they make sure that what is left in the ground after harvesting becomes a natural fertilizer for the next year’s crop. 1) whatever作連接代詞,意為“無論什么;不管什么”, 連接賓語從句、主語從句。如: They eat whatever they can find.,You can take whatever you like. 2) whatever作連接形容詞,意為“論什么樣的”。應(yīng)當注意, 此用法的whatever必須同其被修飾的詞一起放在從句前引導從句。如: I can do whatever work I can find. Whatever difficulties we meet, we can work them out.,These wild flowers are so special I would do ______ I can to save them. A. whatever B. that C. which D. whichever,,You can take ______ you want from those books if you are proved to be a member of our club. A. no matter how B. however C. whatever D. no matter what,,雖然no matter what和whatever都表示“無論什么”,但是whatever引導的是賓語從句,而no matter what引導的是讓步狀語從句。,Write a summary of the text after class. Preview the Reading Task on page51.,Homework:,