Unit 6 Earth first-Starting out&Understanding Ideas课件-2023-2024学年高中英语外研版（2019）必修第二册

外研版高中英语 必修第二册 Unit 6 Earth first Starting out & Understanding ideas Lead-in Why do we have to protect the earth? What measures should we take to protect the earth? Starting out Activity 1 Watch the video and answer the questions. 2. What does the video want to tell us? 1. Which of the facts in the video do you find most alarming? Which of the facts in the video do you find most alarming? Activity 1 deforestation 130,000 square kilometres of forest disappear every year. species’ extinction Each day, around 150 to 200 species of plants and animals become extinct – nearly 1,000 times the natural rate of extinction. ocean pollution shortage of fresh water plastic pollution loss of glaciers More than 1 million animals are killed by ocean pollution each year. 1 billion people don’t have clean drinking water. A plastic bottle can take 450 years to break down. The ice caps are more than 50% thinner than they were 40 years ago. 2. What does the video want to tell us? Severe environmental problems we are facing nowadays make our future uncertain. It's time for everyone to take actions now and make our planet a greener and safer place for our future generations. Activity 1 1. What environmental problem does each cartoon refer to? Activity 2 water pollution deforestation air pollution global warming 2. What are the causes of these problems? Activity 2 *lack of awareness of environmental protection, *fossil fuel(化石燃料) burning, *waste disposal, *chemical and industrial waste, *emission(排放) from cars and motorbikes ... 3. What do you think is the most serious environmental problem we face today? What should be done to help solve it? Activity 2 *recycle（v.回收利用）, *carpooling（v.拼车）, *classification of waste, *green/clean energy, *conserve water & electricity *arouse people’s awareness of protecting our earth, ... understanding ideas Sharks: dangerous or endangered? What do you think of sharks? Tick the words that you would use to descri