课件69张PPT。Unit 2 Working the land Section Ⅲ Using Language自 主 预 习Ⅰ.单词速记 1．_____ (n.)营养；滋养；食物 2．_____ (vt.)画底线标出；强调_____ (adj.)画线的 3．_____ (n.)总结；摘要；强调_____ (n.)强调，总结 4．_____ (n.)评论；议论(vi.&vt.)表达意见；作出评论 5．_____ (vt.)使迷惑；使为难→confusing(adj.)令人迷惑的 →confused(adj.)感到迷惑的→confusion(n.)迷惑nutrition underline underlined summary summarize comment confuse 6．_____ (vt.)遗憾；惋惜(n.)遗憾；懊悔→regretful(adj.)后悔的 7．_____ (adj.)化学的；关于化学的→chemistry(n.)化学 8．_____ (n.)生产；制造→produce(v.)生产 9．discover(vt.)发现→_____ (n.)发现；发觉 10．_____ (vt.)减少；减缩→reduction(n.)减少regret chemical production discovery reduce Ⅱ.短语互译 1．对……造成损害 _____ 2．洗掉 _____ 3．逐渐增强；建立；开发 _____ 4．导致；造成(后果) _____ 5．turn to _____ 6．focus on _____ 7．keep...free from/of... _____ _____ 8．prevent...from... _____ cause damage to wash off build up lead to 转向 集中(注意力、精力等)于 使……免受(影响，伤害等) 使……不含(有害物) 阻止……做…… Ⅲ.课文理解 First 略读主旨 1．Match the general idea of every part. Part 1 (Para.1) _____ Part 2 (Para.2) _____ Part 3 (Paras.3&4) _____ A．Farmers and customers turn to organic farming and how farmers keep their soil rich. B．Scientists have found that chemical fertilizers cause damage to the land and people's health. C．Some of the problems caused by chemical fertilizers.B C A 2．What does the passage tell us？ Since chemical fertilizers have caused _____，farmers have turned to _____ using _____ to keep the soil rich.damage organic farming natural waste Second 细读细节 1．From the passage，we can see organic farmers are those who _____. A．grow crops with chemical fertilizers B．grow crops with natural fertilizers C．produce organic fertilizers D．care for the environmentB 2．From the fourth paragraph，we know that _____. A．it's not good to plant grass between crops B．peanuts use the ground's surface C．peas and soybeans should be grown together with corn and wheat D．vegetables that put down deep roots are harmful to the soilB 3．According to the text，which of the following is NOT the problem caused by chemical fertilizers？_____ A．Crop diseases can be stopped. B．Chemicals stay in the ground and underground water for a long time. C．The helpful bacteria and pests are killed as well as the harmful ones. D．Many of these chemicals are dangerous to people's health.A Third 精读语篇 Recently scientists have found that 1._____ use of chemical fertilizers can cause 2._____ to the land and，even more dangerous，to people's health.So some farmers and many customers are beginning to turn to 3._____ farming.Organic farming is simply farming without using any 4._____.long－term damage organic chemicals Organic farmers focus on how to have a healthy soil which can 5._____ disease and help crops 6._____ strong and healthy.They prefer using natural 7._____ from animals as fertilizer，which will make the soil in thei ... ...
