外研版（2019）选择性必修第一册 Unit 6 Nurturing nature The Sky Railway 课件（共18张）

(共18张PPT)
The Sky Railway
1 Teaching aims
1. Figure out the type of the passage and why this railway is special to the author by reading.
2. Have a deep understanding of the challenges during the construction of the railway and appreciate the workers’ efforts by introducing the railway to your friend.
3. Strengthen your sense of national pride and awareness of protecting nature by finishing the travelogue.
2 Teaching important points
1. To understand the organization of a travelogue;
2. To accumulate relevant expressions;
3. To enhance their awareness of environmental protection and national .
3 Teaching difficult points
1. To distinguish the space line of the travelogue and the line displaying ecosystem protection.
2. To apply what they learn in this period to actual and immediate use.
Lead in
If you go to Tibet, what kind of transportation(交通方式) will you take And why
cheaper
enjoy the scenery
adjust to（适应） the thin air condition gradually
Do you want to know more about the Qinghai-Tibet Railway
Fast reading
Which places were mentioned in the article
西宁
格尔木市
Qingshuihe Bridge
(清水河大桥)
唐古拉站
Cuona Lake(错那湖)
拉萨
Which order is the passage based on
A. Time order
B. Space order
C. Development of the story
Structure of the passage
Fast reading
The Sky Railway
Part 1: Para ______
The author’s feelings of travelling on the Qinghai-Tibet Railway.
1
Part 2: Para ________
The challenges and solutions（解决办法）.
2-6
Part 3: Para __________
The significance（意义） of Qinghai-Tibet Railway.
7
1. What’s the author’s feelings when he was on the Sky Railway
excited
proud
unbelievable
He travelled across “the roof of the world” and many foreign experts claimed it was impossible.
Careful reading
2. Why did the author have such feelings
2 I was one of the people who came from all parts of China to work on this railway. Taking years to complete, the Qinghai-Tibet Railway is a record of all of our efforts to overcome the most difficult engineering challenges. How to protect the delicate ecosystem was among the top concerns.
3 The first landmark to catch my eye is the splendid Qingshuihe Bridge, the world’s longest bridge built over permafrost. Look! A group of Tibetan antelopes is moving under the bridge, with some stopping to eat grass at their leisure. Thirty-three passages have been built under the railway to allow the animals to move safely and freely in their natural habitat. Wild animals such as these Tibetan antelopes have now been using these passages for years. They seem totally unaware that we are speeding past at over 100 kilometres an hour.
4 To prevent damage to wetlands and grasslands, 675 bridges with a total length of about 160 kilometres were built between Golmud and Lhasa. We even moved 140,000 square metres of wetland to a new area in order to protect its distinct ecosystem.
5 The journey has been flying by, and before I know it, we have reached Tanggula Station. Located at over 5,000 metres above sea level, this is the highest railway station in the world. In locations such as this, the thin air, changeable weather and high levels of UV radiation presented perhaps the greatest challenge for railway workers. To make sure we stayed healthy, several oxygen-making stations were constructed. We were also able to enjoy regular breaks in lower areas.
6 As we pass Cuona Lake, I feel a sense of pride and achievement. Using thousands and thousands of sandbags, we built a twenty-kilometre wall along the lake to protect it from construction waste. Cuona Lake is so close to the railway that I want to reach out and touch its pale blue mirror-like surface. Water birds playing in the lake, and cattle and sheep wandering the grasslands bring the scenery to life.
Careful reading
Main idea
of Part 2
Challenges&
solutions
challenges
solutions
Careful reading
Read Para 2-6 and complete the table on P85.
Challenges Solutions
To protect wild animals. __________________have been built under the railway to allow the animals to_____________________________________.
To__________________________________________. 675 bridges with _______________________________ were built between Golmud and Lhasa.
140,000 square meters of wetland were _________________ in order to protect its distinct ecosystem.
prevent damage to
wetlands and grasslands
Thirty-three passages
move safely and freely in their natural habitat
a total length of about 160 kilometers
moved to a new area
Challenges Solutions
To make sure the worker stayed healthy. __________________________ were constructed.
The workers also enjoyed _____________ in lower areas.
To___________________. Thousands and thousands of sandbags were used to ________________________ along the lake to____________________________.
protect Cuona Lake
Several oxygen-making stations
regular breaks
build a twenty-kilometer wall
protect it from construction waste
One of hyperbaric oxygen chambers built along the Qinghai-Tibet Railway to ensure workers’ safety.
Careful reading
Read Para 7 and answer: What makes the author feel proud
After reading
Circle the words that are used to describe the railway.
What other words could you think of to describe it
impossible
highest
extraordinary
miracle(奇迹)， great achievement（成就）
After reading
Can you name other China’s mega projects that greatly improve people’s well-being
Discuss
What changes do you think the Qinghai-Tibet Railway has brought to the people living along the railway
The railway has made it convenient for people to travel around; it has promoted the local economy; it has improved people’s living standard.
Homework
Retell the whole text by yourself after class.
Thanks for your listening！