1、Unit 1 Reading 1 The evolution of video and sound devices 高中英语高中英语 必修（第三册）必修（第三册） Unit 2 Natural disasters Welcome to the unit 1. What can you see in the pictures? 2. What do you think may have happened in the pictures? Lead-in Plates moving underground can cause an earthquake, which is of the earth
2、s surface. When a volcano erupts, , volcanic ash and even rocks escape through a large opening at the top. A large amount of falling down a hill or mountain is called a landslide. Video time a sudden shaking hot gases earth and rock What natural disasters are mentioned in the video? What other types
3、 of natural disasters do you know about? Natural disasters pests insects tsunami tornado drought sandstorm typhoon forest fire flood Free talk and more What natural disasters in history have you heard about? Free talk Afghanistan Blizzard in 2008, the second worst blizzard in modern history with reg
4、ard to casualties, had an estimated death toll of more than 900 due to temperatures that fell below 30 with up to 180 centimetres of snow in the mountainous regions. Some were frozen to death, and some died when their vehicles were blocked by snowdrifts. It also claimed more than 100,000 sheep and g
5、oats and 315,000 cattle. Can you describe a natural disaster in history? Structure (Name): Another type of natural disaster that I know about is. (Reason) : Copy the sentence patterns on Page 15. (Result): Loss. Free talk Can you describe a natural disaster in history? Sample answer: Another type of
6、 natural disaster that I know about is tsunamis. A tsunami is a series of huge waves, often caused by an earthquake or a volcanic eruption. Tsunamis often damage buildings severely and they can be deadly to humans. The 2004 Indian Ocean Tsunami killed more than 200,000 people. Free talk 1. Why do th
7、e natural disasters break out more often? 2. What can we do to reduce the possibility of natural disasters such as fire? 3. What do you think of the first sentencenatural disasters are terrible reminders of the power of nature? 4. Are natural disasters closely connected with man-made disasters? Can
8、you give an example? Discussion Homework 1. Write down a short paragraph describing a natural disaster. Your writing should include an example and an ending about what we should do. 2. Get ready for the Reading part and complete exercises A1A2 on Page 18. Homework 1. Read this article aloud. 2. Finish the workbook. 谢谢 谢谢
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