Unit 5 Working the land Using Language (II) 课件-2023-2024学年高二英语人教版（2019）选择性必修第一册

人教选择性必修第一册 Unit 5 Using Language (II) Evaluate chemical farming and organic farming 教学目 Lead-in 视频：Organic farming 1 2 To understand the differences between chemical and organic farming and their advantages and disadvantages, analyse the structure and learn writing techniques of argumentative essay To write an essay to express your views on chemical farming or organic farming 学习目标 目标一：To understand the differences between chemical and organic farming and their advantages and disadvantages, analyse the structure and writing techniques of argumentative essay Activity 1: Look through page 55 and page 56, find out the new words and phrases, read them in pairs. Then read together as a whole and share their usage. organic, pesticide, widespread, bacterium, in turn, digest, essential, mineral, alternative, grocery, instance, for instance, depth, root, entirely Activity 2: Look at the title and the pictures in the passage, think about what it is about. Chemical Versus Organic Farming It is about chemical and organic farming. Activity 3: Read and match the main ideas with the paragraphs. Para. 1—2   Para. 3   Para. 4   Para. 5 A What organic farming   B Why man-made chemicals are still used in farming   C Organic methods for producing rich soil   D The problems with chemical farming   Activity 4: Read the text, and then answer the questions. 1 Why did many farmers welcome the introduction of chemical farming? 2 What concerns many people about the use of pesticides? 3 What is one problem with the use of chemical fertilizers? 4 How is organic farming different from chemical farming? 5 Why do organic farmers change the kind of crop grown in a field every year? 6 What is the goal of using organic farming methods? Do you think it can be reached? Why or why not? 1 Many farmers welcomed them as a great way to fight crop diseases and increase production. 2 Their long-term use can sometimes harm both the land and people’s health. 3 Crops grown with them