高中英语 Unit 5 Working the Land Section Ⅲ Using Language学案（含解析）新人教版选择性必修第一册-新人教版高二选择性必修第一册英语学案

Unit 5 Working the LandSection Ⅲ Using LanguageⅠ.重点单词1．fertiliser n．肥料2 ． nutritional adj. 营 养 ( 物 ) 的 → nutritious adj. 有 营 养 的 ； 营 养 丰 富 的→nutrition n．营养；滋养3．alleviate vt.减轻；缓解4．poverty n．贫穷；贫困5．organic adj.有机的；不使用化肥的；有机物的6．pesticide n．杀虫剂；除害药物7．widespread adj.分布广的；普遍的；广泛的8．bacterium n．细菌→bacteria (pl.) 9．digest vt.& vi.消化 vt.领会；领悟→digestion n．消化；领悟10．essential adj.完全必要的；极其重要的11．mineral n．矿物；矿物质12．alternative n．可供选择的事物 adj.可供替代的；非传统的13．grocery n．食品杂货店→groceries[pl.]食品杂货14．instance n．例子；实例；事例15．depth n．向下(或向里)的距离；深(度)→deep adj.深的16．root n．根；根茎；根部；根源17．entirely adv.全部地；完整地；完全地→entire adj.全部的；整个的；完全的18．aspect n．方面；层面Ⅱ.重点短语1．in use 在使用2．in turn 相应地；转而；依次；轮流3．as for 关于；至于4．switch to 转到；转换到5．turn to 求助于；求教于；改用6．focus on 集中(注意力、精力等)于7．keeps...free from/of 使……免受(影响、伤害等)；使……不含(有害物)8．for instance 例如；比如9．meet that need 满足那样的需求Ⅲ.重点句型1 ． As for chemical fertilisers, crops grown with them usually grow too_fast_to_be rich in nutrition.至于化肥，用它们种植的作物通常生长得太快，无法提供丰富的营养。2．What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world.阻止他们这样做的原因是化学农业满足了世界各地对粮食的巨大需求。1 [典型例句]Nowadays, a great deal can be done to alleviate back pain.如今，减轻背部疼痛可以有许多方法。A number of measures were taken to alleviate the problem.采取了一系列措施缓解这个问题。[思维拓展]alleviation n．减轻；缓解；缓和；镇痛物[即时训练]He said he and his organization have worked for 36 years for the alleviation(alleviate) of poverty.2 d...