【英语】Unit 2《Section Four Using language》课件(人教版必修4).ppt

Main idea of the passage Chemical fertilizers can cause many problems, so organic farming is becoming more popular. Underline and rewording topic sentences Para1: In recent days, scientists have discovered that using chemical fertilizers for a long time can hurt the land and also people’s health. Para2: There are several problems caused by chemical fertilizers. Para3: Organic farming is becoming more popular with some farmers and many customers after these discoveries came out. Para4: There are many organic farming methods for making the land healthy and productive. Writing a summary In recent days, scientists have discovered that using chemical fertilizers for a long time can hurt the land and also people’s health. There are several problems caused by chemical fertilizers. They hurt the health of the land, stay in the water for a long time and get into people’s bodies through their food. Organic farming is becoming more popular with some farmers and many customers after these discoveries came out. Organic farming does not use any chemicals. There are many organic farming methods for making the land healthy and productive. All of these methods try to produce good food and to keep the environment and people healthy. ? Please dont confuse Australia with Austria. 别把澳大利亚和奥地利混淆了。? Much to my regret, I cant accept your invitation. 很抱歉,我不能接受你的邀请。 We must increase production levels. 我们必须提高生产水平。 Many diseases are caused by bacteria. 许多疾病是由细菌引起的。 That child is an absolute pest! 那孩子讨厌极了！ Growth is a function of nutrition. 长身体是由营养决定的 ● Coal is a mineral. 煤是一种矿物。 ● New scientific discoveries are being made every day. 每天都有新的科学发现。 ● This kind of soil contains much alkali. 这种土壤含碱丰富。 ● He is trying to reduce the familys expenses. 他正尽力减少家庭开支。? ● Unhappiness is the root cause of his illness. 不开心是他生病的根源。 ? ● It took me an hour to skim the book. 我花了一小时把这本书浏览了一遍。 ● Please underline the important items. 请在重要事项的下面划线。 ● Please write me a s