2019-2020年高中英语（人教大纲）第二册上：Unit10 Frightening nature(第一课时) I. Brief Statements Based on the Unit Have you experienced a terrible nature disaster? Certainly few of us have. Do you want to know something about it? Certainly many of us do. After you have learned this unit, Unit 10. Frightening nature, you are sure to obtain some useful information about that. The unit will be taught in four periods. In the first period, well deal with Warming up, Listening and Speaking. At the beginning, four pictures are shown to the students. They are asked to talk about them and then write down what is observed. The pictures are about geology, meteorology, astronomy and biology, including typhoon, cobra and cells. The pictures and the questions after them can greatly stimulate the students interest in science. Listening is about weatherforecast in the USA. The exercises of listening can test how the students grasp the detailed information in it. Speaking provides all types of topics for the students to talk about. When they finish their talking, a lot of useful expressions on how to express emotion, anxiety and fear are mastered by them. In the second period, well deal with Prereading, Reading and Post-reading. In the beginning, the students will see and talk about three pictures about a famous volcano vesuvius, which once erupted about two thousand years ago, and destroyed two small towns. Then thewhole text gives us a vivid picture at that time. It describes how the writers uncle died. His uncle, attracted by the scene of volcano eruption, wanted to observe and record more about that. So he decided to go and see it from closer. He went there and rescued his friends wife. Then he went to see another friend of his, who lived very near to the erupting volcano. He even encouraged the scared people to calm down. But unfortunately, he died at last. He only thought about learning more about volcano and wasnt afraid at all. He valued scientific knowledge more than his life. In the third period, we deal with Word study and a grammar item-Ellipsis. Plenty of exercises are arranged for it. The students will master it through practice. Integrating skills are delt with in the fourth period. The text is about a ship, controlled by the captain and his crew, fighting against a terrible typhoon. The story without end asks the students to use their imagination and write how it will end. We are sure that when the unit is finished, the students will not only improve their ability to listen, speak, read and write, but also learn and master plenty of useful words and expressions.II. Teaching Goals1. Talk about natural disasters volcanoes, hurricanes and typhoons.2. Express emotion, anxiety and fear.3. Learn about Ellipsis.4. Practise creative writing.III. Teaching Time: Four periodsIV. Background Information1. Volcanoes There are thousands of volcanoes all over the world. What makes volcanoes?What happens? The inside of the earth is very hot. Because it is very, very hot, the rock has melted like ice. It has bee liquid, like water, his always boiling, like water in a kettle. If you have seen a kettle boiling, you know that the steam and boiling water try to get out. The very hot inched rock inside the earth also tries to get out. Usually it cannot because the outside of the earth is too thick and strong. But in some places the outside of the earth is thin and weak. Sometimes a crack (a small opening) appears. The hot melted rock, which we call “lava”. pushes upthrough the crack and bursts through. Steam and gas shoot up into the air and the hot melted lava pours out. Big pieces of rock may be thrown high into the air. After a while the volcano bees quiet again. The melted lava bees hard. Later the same thing happens again and again. Each time more hot lava pours out on top of the cold lava and then bees hard. In this way a kind of mountain is built up, with a hole down the middle. Perhaps the volcano will then be quiet and no more lava will burst out. Perhaps it will start again hundreds of years later. Although there are thousands of volcanoes in the world, most of them are dead. Only about 500 sometimes start to throw out lava again. A famous volcano which is now dead is Mount Fujiyama in Japan. It is covered with snow in winter. Vesuvius is the name of a very famous volcano in Italy. It first came to life many, many years ago. It was quiet for hundreds of years. Then in the year 79 it suddenly burst. A great cloud of smoke shot up into the sky with great burning rocks, which fell all around. Hot lava poured down its sides. About 3 000 people were killed. This has happened again many times since that year. Sometimes no damage was caused, or only little damage. But there was serious damage in the years 472,1631, 1794, 1861, 1872 and 1906. You can see that a volcano can stay alive for many years. In 1906 part of the top of the mountain fell off. There