必修2英語第二單元課件已經為大家準備好啦，老師們，大家可以參考以下教案內容，整理好自己的授課思路哦！
Teaching Aims:
1.Get the Ss to grasp the main meaning of the whole text.
2..Ask the Ss to retell the text according to the questions.
Teaching procedures:
Step I Lead in
1.Check homework:
2.Show the map of Egypt and Africa
3.Get the Ss to respond the teacher’s questions:
T: Where is Africa ?
Where is Egypt ?
What is the river?
What is the dam ?
4.Ask one student to say something about Egypt.
Step II. Watch the video
1.可以在(探索)中查找關于埃及或金字塔或阿司旺大壩或阿布神廟.
2. 或者觀看本文的錄象資料。
Q: Is the High Dam a successful project ? (No)
Step III. Presentation
1.Read the text again and give them three questions ,
Qs: (1).Why was the High Dam built ?
(2).What is the High Dam like ?
(3).What were the problems with the building of the dam?
2.Discuss the answers in pairs.
3.Discuss the answers in class.
4.Try to help the Ss to be able to retell the text in their own words.
The possible answers:
1) The River Nile used to flood large areas every year and destroyed houses and crops. The new dam can control the waters of the Nile so that they run regularly all through the year. Electricity(20-50%of the electricity which Egypt needs )can be produced from the water which runs through the base of the dam.
2) The High Dam is the biggest in the world. It is 3830 meters long, 980 meters wide an the base and 40 meters wide at the top. The lake made by the dam is 500 kilometers long.
3) The water level of the lake was going to rise by 63 meters. It would be necessary to move 53000 people from their villages. A lot of important old temples dated from about 1250 BC would be covered by the water of the new lake so they would be in danger.
Step III Discuss
The Three Gorges Dam Project and the problems.
建議：提供有關三峽工程的.一些數據（開始，進程，及規模）
三峽工程全稱為長江三峽水利樞紐工程。整個工程包括一座混凝重力式大壩，泄水閘，一座堤后式水電站，一座永久性通航船閘和一架升船機。三峽工程建筑由大壩。水電站廠房和通航建筑物三大部分組成。大壩壩頂總長3035米，壩高185米，水電站左岸設14臺，右岸12臺，共裝機26臺，前排容量為70萬千瓦的小輪發電機組，總裝機容量為1820千瓦時，年發電量847億千瓦時。通航建筑物位于左岸，永久通航建筑物為雙線五包連續級船閘及早線一級垂直升船機。
Step III Practice.
根據問答提示，寫一篇短文。(可做口頭練習)
1. Where is the Palace Museum ? (in the center of Beijing)
2. How big is it ? (an area of 72 hectares)
3. When was it first built? (in the early 15thcentury)
4. How many people did it take to work on it? (1,000,000)
5. How long did the building of the project last? When was it finished? (14 years,1492)
6. What happened to some of the houses during the later years? (rebuild)
7. Who used to live in it ? (twenty-four emperors)
8. When didi it become a museum and open to the public ? (1925)
答案：
The Palace Museum is in the center of Beijing. It covers an area of 72 hectares(公頃). It was first built in the early 15thcentury. It took 1,000,000 people to work on it. The building of the project lasted 14 years and was finished in 1420. During the later years, some of the houses were rebuilt. Twenty-four emperors used to live in it. It was not until 1925 that the Palace Museum became a museum. Since then the place has been open to the public.
Step IV Practice
P90 Ex 3.
Step VHomework
1.If we have no time to do the writing above in class, we can leave it as homework
2.Read the text again and again.
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