Unit 1 Nature in the Balance Integrated skills 课件-2022-2023学年高一英语牛津译林版（2020）必修第三册

Unit 1 Nature in the balance (Integrated skills) Human activities cause increasing harm to animals Lead-in Watch a video and think what the video is about. Ⅰ Fast reading 3 Human activities cause increasing harm to animals Figure out the structure and main idea of each paragraph. Para. 1 Para. 2 Para. 3 Human activities have brought many animals close to extinction. Hunting and fishing have directly influenced the world’s animal populations. Human activities that have indirect effects on animals can be just as harmful. Ⅱ Careful reading 5 What are the main reasons why people hunt animals? For food, for fashion and for fun. When we build farms or factories, we destroy animal habitats and leave many animals with nowhere to live, or no food to eat. Air, water, noise and light pollution can all have a deep and damaging influence. Read carefully and answer the following two questions. How do human activities have an indirect effect on animals? Ⅲ Intensive reading 7 Para.1 When you think of a fearsome hunter, images of lions and sharks may spring to mind. Recent research by environmental scientists, however, shows that in fact, humans are the most fearsome hunters who have the greatest impact on animal populations. Human acctivities have brought many animals close to extinction. In the last 500 years, over 300 species of animals have gone extinct. Some activities,such as hunting and fishing, directly harm animals, while other activities, such as development in towns and cities, impact indirectly on animal populations. Read and underline the important words, phrases and sentences. 1 对…造成了越来越多的伤害 2 出现在脑海；突然想起 3 事实上 4 对…有影响 5 使…濒临灭绝 6 走向灭绝 cause increasing harm to... spring to mind in fact have an impact / influence / effect on bring … close to extinction go extinct Go over the phrases. 9 1. In the last 500 years, over 300 species of animals have gone extinct. 语法功能：____________ Over the past 50 years, about 17 per cent