Unit 5 Using language chemical versus organic farming 重点语言点 ppt课件-(2022新)人教版高中英语选择性必修第一册.pptx

1、in widespread usewelcomed sb/sth asfight crop diseaseincrease productionlong-term useboth . and.广泛使用作为.欢迎(某人某物）防病增加产量长期使用二者都what some scientists have found is that their long-term use can sometimes harm both the land and peoples health一些科学家发现，它们的长期使用有时会损害土地和人民的健康Chemical pesticides and artificial fe

2、rtilisers have been in widespread use in farming since the middle of the 20th century. When they were first introduced, many farmers welcomed them as a great way to fight crop disease and increase production. Over time, however, what some scientists have found is that their long-term use can sometim

3、es harm both the land and peoples health主语从句表语从句She welcomed me warmly as a guestwelcomed sb/sth as作为.欢迎(某人某物）中国游客被认为是高价值游客而受欢迎 Chinese visitors are welcomed as high value tourists. not only .but also. in additionunderground water sourcesmake sb illIn factbecause ofas for不仅。而且。此外;另外;加之;除之外地下水源使某人生病;

4、 引起身体的不适事实上因为至于For example, pesticides can damage the land by killing not only harmful bacteria and insects, but also helpful ones. In addition, these chemicals can stay in the soil and underground water sources for along time. This affects the crops grown on the landand, in turn the animals and hum

5、ans who digest them. Many people worry that these chemicals may make them ill and even cause cancer. In fact, some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the environment. As for chemical fertilisers, crops grown with them usually gro

6、w too fast to be rich in nutrition. They may look beautiful on the outside, but inside there is usually more water than essential minerals, and they often have less flavour as wellbacteria and insectsYou need money and time. _, you need diligence. 你需要钱和时间，此外还需要努力。Theres a postage and packing fee_the

7、 repair charge.除修理费之外还有邮寄和包装费。 in addition to In additionAs for Jo, shes doing fine.As forswitch tofocus onfree of use .as.切换到;转换到专注于;关注，聚焦于免于.，没有.free of dutyfree of charge使用.作As an alternative, some farmers have switched to organic farming, and many customers have turned to organic food when they

8、shop at the local grocery. Organic farming is simply farming without using any chemicals. Organic farmers focus on keeping their soil rich and free of disease through naturalmeans. For example, many organic farmers use natural waste from animals as fertiliser. this makes the soil in their fields ric

9、her in minerals. It also keeps the air, soil, water, and crops free of chemicalshe did not switch to the manual modeswitch tofocus onDont always focus on the dark side of things.It was several weeks before he was completely free of pain.free of Organic farmers also use many other methods to produce

10、rich soil. They often change the kind of crop grown in each field every year. For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. Why different crops are grown is because they put important minerals back into the ground, making it ready for the next bat

11、ch of crops. Organic farmers also plant diverse crops that use different depths of soil to help keep it rich. For example, peanuts grow on the grounds surface, but many other vegetables put down deep roots. The goal of using different organic farming methods is to grow good food while avoiding damag

12、e to the environment or to peoples healhbatch of 一批 ; 一批生产的量 ; 批 ; 分批处理the kind ofput. back into.Organic farmers有机耕种的农民多茬庄稼diverse cropsthe grounds surface地面damage to the environment对环境的破坏这种; 那种放回到Each summer a new batch of students tries to find work.put. back into.We must put what you have taken o

13、ut back into the society . batch of para.5prefer toman-made chemicalskeep them from high demand充足的食物sufficient foodas healthy as possible尽可能保持健康高需求阻止他们人造化学物 品较喜欢;宁愿:para.5Some people would prefer to stop the use of man-made chemicals in agriculture entirely. What keeps them from doing so is the fact

14、 that chemical farming serves the high demand forfood around the world. Organic farming is nowhere near able to meet that need. Therefore, there is still a long way to find a suitable solution that puts sufficient food on the dinner tablewhile keeping people and the environment as healthy as possibl

15、ehigh demand forfood 有机农业远远不能满足这一需求We prefer to travel off-season. prefer toprefer to do sth rather than do sthI prefer to do some sports rather than stay at home.prefer doing sth to doing sthI prefer doing this to doing that. I prefer doing something to doing nothingWe should keep them from killing the wild animals.keep them from + doing keep sb doing sth使某人一直做某事 ；使某人持续做某事My mother keeps me doing my homework.We kept them waiting for us for a long time.