1、Book 4 Unit 2 Working the land Using language（学案五） Learning Goals:1. develop the students skills of summarizing.2. help the students realize the importance of organic farming.Previewing (预习)Fill in the blanks with a proper word from the passage on page 14 .1.Some can cause disease. People usually ta
2、ke some medicine to help them to recover.2.If someone makes a , he or she is the first person to find or become aware of something that no one knew about before.3. Stores of grain are frequently attacked by , especially rats.4. If you are careful in your exam, you can mistakes you will make.5. Plant
3、s will grow better in rich and loose .Researching in Class (课堂探究)Step 1 Leading in 1. What is the substance most farmers put on the soil to make crops grow?_ 2. How many kinds of fertilizers do farmers use?_ Step 2 Listening & Reading & Thinking1Skim each paragraph again and find the main ideaParagr
4、aph : Long-term use of chemical fertilizers can cause damage to the land and peoples health.Paragraph : Farmers and customers turn to organic farming.Paragraph : Other methods to keep the soil fertile Paragraph : Problems caused by chemical fertilizers. 2What is “organic farming”? ( no more than 12
5、words)_ 3Fill the blank: The fertilizer that organic farmers prefer is .4Choose the best answer. （1）Which is not the reason why organic farmers prefer natural waste from animals? A. It can keep the food free from chemicals. B. It can keep the air, soil and water free from chemicals. C. It can kill h
6、armful pests. D. It can make the soil richer in mineral.（2）What is the advantage of using chemical fertilizers? A. Leaving chemicals in the ground for a long time is good for water supply. B. They can get the soil exhausted. C. They can kill helpful bacteria. D. They can kill harmful pest. 5What doe
7、s the word“it” (Line 3,Para4 ) probably refer to？（no more than 2 words）_ 6Skim the passage again and find the main idea. can cause many problems, so is becoming more popular. Step3 Testing1. Fill the blanks with proper words. In recent years, scientists have discovered that using 1 fertilizers for a
8、 long time can 2 the land and also peoples health. There are several problems 3 by chemical fertilizers. They hurt the health of the land, 4 in the water for a long time and 5 peoples bodies 6 their food. 7 farming is becoming more popular 8 some farmers and many customers after these discoveries ca
9、me out. Organic farming does not use any 9 . There are many organic farming methods 10 making the land healthy and productive. All of these methods try to produce good food and to keep the environment and people healthy.Step4 Thinking (自主学习朗读下面的单词和句子，归纳它们的用法)1. It is important to explain this again
10、or we will confuse the students. (Page 13)Confuse （1） vt_（2） n. 混乱; 慌乱; 混淆Please dont confuse Australia with Austria. He was confused by a strange idea. There was some confusion as to whether we had won or lost.It was a very confusing situation. 1.把A与B混淆 2.对感到困惑;被搞糊涂了 3. adj(事)令人困惑的 4. adj(人)糊涂的；迷惑的
11、 The look on her face suggested that she her managers ideaA. confusing; wouldnt quite understand B. confused；hadnt quite understoodCconfusing；hadnt quite understoodDconfused；shouldnt quite understand2. These chemicals in the food supply build up in peoples bodies over time. (Page 14) build up Hard w
12、orking conditions build up character. The clouds are building up. Our country has built up her fine reputation in the world He has built up a good business over the yearsPractising Chinese kung fu can not only ones strength. But also develop ones character.A. bring up B. take up C. build up D. pull
13、up 4. Many of these chemicals can lead to cancer or other illnesses. (Page 14) lead to （其中to是介词，后跟名词、代词或动名词） Too much work and too little rest often lead to illness. All roads lead to Rome. The car accident led to his being killed. The students in this college are all taking courses a degree.A . dev
14、oting to B. turning to C. leading to D. sticking to5. They focus on keeping their soil rich and free of disease. (Page 14)focus on（1） （2）focus 还可以作名词，意思是 Im so tired that I cant focus on anything today He always wants to be the focus of attention. He took out the binoculars and adjusted the focus. 1
15、.把注意力集中在某物上 2.注意力的中心/焦点 Public attention at the moment is focused the problem of environment balance.A .into B . towards C. about D . on6. This also keeps the air, soil, water and crops free from chemicals. (Page 14)keepfree from/of We put our books in bookcase to keep them free from dust. He wont b
16、e able to keep the truth from his father. You cant keep him from doing that thing. Im free of that job at last. They aim to free the students from too much homework. 1. keep from: 2. free from: 3. be free of sb/sth: 1)free fromof意为“无的”“免除的”“不受约束的”。如：They like living in a village，free fromof crowds a
17、nd noises他们喜欢住在村子里，远离人群和喧闹。She got the ticket free of charge她免费得到了这张票。2)keep重点短语归纳：keep an eye on照看；密切注视keep away from远离；避开keep back隐瞒；忍住(眼泪)keep company和在一起keep off(使)避开keep up with跟上如：Please keep an eye on our baby 请照看一下我们的婴儿。We kept away from the big dog 我们远离了那只大狗。 I11 keep nothing back from you
18、我将什么也不隐瞒你。 The pet cat keeps company with him every day 那只宠物猫每天和他在一起。 Keep off the grass勿踏草坪。 He does,hat he can to keep up with his classmates他尽他所能跟上他的同学们。 Something must be done to keep .A. the boy to make noise B. the boy making noiseC. the noise from making by the boy D. the boy from making nois
19、eEating well and exercising every day coldAkeep you back from Bkeep you free fromCkeep you company with Dkeep you away7. Swap summaries with your partners and give each other comments. (Page 15)comment (1) n. （2）vi vt. He made no comments on our proposal. He commented on/upon the weather. His strang
20、e behaviour caused a great deal of comment. John commented that it was time for us to go home. 1.对作出评论 2.合理的批评，应得的评伦 3.无可奉告 4.对 评论 5.评论 Do you have any to make on the recent developments?A. impressions B. reaction C. comments D. opinionStep 3 Testing1. He regretted to attend the lecture the day befo
21、re.A. not going B. not to go C. not have gone D. to not going2. Its expensive. Can you reduce the price a third?A. to B. by C. of D. at3. We on this project for four hours. Lets have a rest.A. are working B. have been working C. worked D. had worked4. Nowadays everyone is responsible for a harmoniou
22、s society in China.A. making up B. taking up C. opening up D. building up5. As we all know, it is human activity that the global warming.A. has come from B. have come from C. has led to D. have led to6. You are required to write on so that we can see it clearly.A. every other lines B. each other line C. another each line D. every other line7. A plane crashed into a hillside five miles east of the city, all four people on board.A. killed B. killing C. kills D. to kill
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