Lesson 90 (Extensive Reading)高中英语教案

   教学设计方案

Lesson 90 (Extensive Reading)

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)中查找关于埃及或金字塔或阿司旺大坝或阿布神庙.

　　2. 或者观看本文的录象资料。

　　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.

　　建议：提供有关三峡工程的一些数据（开始，进程，及规模）

　　三峡工程全称为长江三峡水利枢纽工程。整个工程包括一座混凝重力式大坝，泄水闸，一座堤后式水电站，一座永久性通航船闸和一架升船机。三峡工程建筑由大坝。水电站厂房和通航建筑物三大部分组成。大坝坝顶总长3035米，坝高185米，水电站左岸设14台，右岸12台，共装机26台，前排容量为70万千瓦的小轮发电机组，总装机容量为1820千瓦时，年发电量847亿千瓦时。通航建筑物位于左岸，永久通航建筑物为双线五包连续级船闸及早线一级垂直升船机。

图为：三峡工程效果图。

朝辞白帝彩云间，千里江陵一日还。

两岸猿声啼不住，轻舟已过万重山。

　　　　　　　 —— 唐 李白 下江陵

关于三峡的资料：

　　船出了西陵峡，经过一段宽谷的航行后就进入了长江三峡的另一座古城巴东。长江三峡的巫峡就从巴东县的官渡口开始，结束于四川省巫山县的大宁河口，全长42km，巫峡以巫山得名。她幽深秀丽，千姿百态，以俊秀著称天下。峡谷内长年云遮雾绕，细雨蒙蒙，及易形成巫山云雨的奇妙景观。谷深峡长，奇峰突兀，江流曲折，百转千回，船行其间，宛若进入奇丽的画廊，充满诗情画意，令人叹为观止。不少观光游客游过巫峡之后，感触颇深地说：“要知中国画与中国山水的关系，不到巫峡不明白。”唐朝诗人元稹曾赋诗曰：“曾经沧海难为水，除却巫山不是云。”可见巫山云雨乃是天下云雨之冠了。

要求学生模仿课文，叙述三峡工程。

Step III Practice.

　　根据问答提示，写一篇短文。(可做口头练习)

　　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 15^th century)

　　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(公顷). It was first built in the early 15^th century. 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 V Homework

　　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.