外研版（2019）选择性必修第一册Unit 6 Nurturing nature Starting out& Understanding ideas（教学课件）22张

(共22张PPT)
Unit 6 Nurturing nature
Section A Understanding ideas
Pre-class
1. World Heritage Sites __________________
2. put___________ operation 投入使用
3. pass____________经过
世界遗产
into
by
4. be about to do sth. ___________________
5. race along__________平稳行驶
6. roof of the world___________________
正要做某事
steadily
世界屋脊
7. ___________________克服挑战
8.protect the _________ecosystem保护脆弱的生态系统
9. among the top___________高度重视的问题之一
overcome the challenges
delicate
concerns
10. ___________one's leisure 空闲时
11. (be )unaware that/of..._______________
12. speed past___________________（此处speed用作动词，意为“加速，快速移动”）
at
未意识到……
快速经过；快速驶过
While-class
Activity 1
1 Which is the highest railway in the world
a The Trans-Siberian Railway.
b The Qinghai-Tibet Railway.
c The Chengdu-Kunming Railway.
2 In which year was the completed Qinghai-Tibet Railway put into operation
a 1984.
b 2001.
c 2006.
3 Which of these stations is not on the Qinghai-Tibet Railway
a Lhasa.
b Golmud.
c Lanzhou.
4 Which of these natural World Heritage Sites does the Qinghai-Tibet Railway pass by
a Xinjiang Tianshan
b Qinghai Hoh Xil.
c South China Karst.
Activity 2
Read the passage and find out why the railway is particularly special to the author.
The author has worked on the Qinghai-Tibet Railway. Once believed "impossible", the highest railway in the world is a record of the efforts of the workers to overcome the most difficult engineering challenges. These efforts and their end results mean that the railway is special to the author.
Activity 3
1 To prove that humans can conquer nature.
2 To highlight the amount of work required to build the Qinghai-Tibet Railway.
3 To praise the workers' efforts in building the Qinghai-Tibet Railway.
Activity 4
Challenges Solutions
To protect wild animals. 1 _________________________have been built under the railway to allow the animals to 2 _______________________________
To 3 _______________________________________ 675 bridges with 4 ____________________________
were built between Golmud and Lhasa.
140,000 square metres of wetland were 5 _____________________ in order to protect its distinct ecosystem.
Thirty-three passages
move safely and freely in their
natural habitat
prevent damage to wetlands
and grasslands
a total length of about 160 kilometres
moved to a new area
To make sure the workers stayed healthy 6_____________________________ were constructed. The workers also enjoyed 7 _____________________ in lower areas.
To 8 _______________________________ Thousands and thousands of sandbags were used to 9 _______________________along the lake to 10 ___________________________
Several oxygen-making stations
regular breaks
protect Cuona Lake
build a twenty-kilometre wall
protect it from construction waste
After-class
1 Which of the solutions are you
most impressed by Why
2 Which words in the passage are used to describe the Qinghai-Tibet Railway What other words could you think of to describe it
Sky Railway, impossible, highest, extraordinary.
You can also say it is a miracle, great achievement, etc.
3 What changes do you think the Qinghai-Tibet Railway has brought to the people living along the railway
4 What method did you use to collect information How did the information help you to better understand the passage