Unit5 Working the land Using Language Chemical Versus Organic Farming 课文讲解讲义 -2022-2023学年人教版高中英语选择性必修第一册

选修一 Unit 5 Using Language Chemical Versus Organic Farming 化学农业与有机农业 Para 1： 1. Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle of the 20th century. 自20世纪中叶以来，化学杀虫剂和人工肥料在农业中得到了广泛使用。 · in widespread use在广泛使用中 2. When they were first introduced, many farmers welcomed them as a great way to fight crop disease and increase production. 当它们首次被引入时，许多农民欢迎它们作为对抗作物疾病和增加产量的好方法。 · introduce:推行；实施；采用 · fight crop disease 抵制作物病害 · to fight crop disease and increase production作 a great way的后置定语 3. Over time, however, what some scientists have found is that their long-term use can sometimes harm both the land and people's health. 然而，随着时间的推移，一些科学家发现，长期使用它们有时会损害土地和人们的健康。 · over time 随着时间的流逝 · what some scientists have found是what引导的主语从句 Para2 1. For example, pestícides can damage the land by killing not only harmful bacteria and ínsects, but also helpful ones. 例如，杀虫剂不仅可以杀死有害细菌和昆虫，还可以杀死有益的细菌和昆虫，从而破坏土地 。 · bacteria n(单数bacterium)细菌 2. In addition, these chemicals can stay in the soil and underground water source for a long time. 此外，这些化学物质可以长时间停留在土壤和地下水源中 。 3. This affects the crops grown on the land and, in turn, the animals and humans who digest them. 这会影响土地上种植的作物，进而影响消化它们的动物和人类。 · in turn相应地；转而；依次 · digest vt vi消化；vt领会；领悟 4. Many people worry that these chemicals may make them ill and even cause cancer. 许多人担心这些化学物质可能会使他们生病，甚至导致癌症。 5. In fact, some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the environment. 事实上，DDT等一些杀虫剂在大多数国家已被禁止使用，因为它们对人类和环境造成损害。 定语从句 6. As for chemical fertilisers. crops grown with them usually grow too fast to be rich ín nutrítion, 至于化肥。用它们种植的作物通常生长得太快而无法丰富营养 · as for 至于。as for常位于句首，用以转换话题。 · too…to-太而不能 7. They may look beautiful on the outside, but inside there is usually more water than essential minerals, and they often have less flavour as well. 它们可能外表看起来很漂亮，但里面的水通常比必需矿物质多，而且它们的味道也往往较少。 · essential:完全必要的；极其重要的 Para 3: 1. As an alt