外研（2019）选择性必修一unit 6 Nurturing nature Starting out and understanding ideasPPT(共43张)

(共43张PPT)
Period 1
Starting out &
Understanding ideas
Uluru, Australia
Iguazu Fall
Argintina and Brazil
Huanglong, China
Starting out
Step 1. Starting out
Step 2: Extensive Reading of the Passage
Step 3: Intensive Reading of the Passage
Starting out
What nature can do to us humans
Nature can provide everything humans need to survive and live better. Nature is offering humans with fresh air to breath, clean water to drink and various food to eat. It's absolutely right that humans can't live without nature.
Starting out
What can we humans do to nature？
People used to think:
Humans can conquer nature.
Humans can explore nature.
Huamns can reform nature.
Current Situation
Unfortunately, as man’s desire expands, man asks for more and more from nature. As a result , the environment has been seriously polluted by chemical wastes from factories and sewage in cities. Farmland is also overwoked and has lost its fertility. And a variety of wild animals are being hunted and killed. Naturally, the consequences are that many species of plants and animals are disappearing from the earth and the balance of the nature is being upset. Now nature has taken revenge on man.
It is clear that nature is full of power and man has the ability to explore nature ,to know nature and reform the nature but not the ability to conquer nature or control nature.
Starting out
Humans can explore nature.
Starting out
Humans can reform nature.
Three Gorges Dam
Starting out
Humans can appreciate nature.
Uluru, Australia
Iguazu Fall
Argintina and Brazil
Starting out
Humans can protect nature.
Undesrtanding ideas
Quiz
1. Which is the highest railway in the world
A. The Trans-Siberian Railway.
B. The Qinghai-Tibet Railway
C. The Chengdu-Kunming Raway.
2. In which year was the completed Qinghai-Tibet Railway put into operation
A. 1984
B. 2001
C. 2006.
Undesrtanding ideas
Quiz
3. Which of these stations is not on the Qinghai-Tibet railway
A. Lhasa
B. Golmud
C. Lanzhou
4. Which of these natural World Hertage Sites does the Qinghai-Tibet Railway pass by
A. Xinjiang Tianshan.
B. Qinghai Hoh Xil
C. South China Karst
The Sky
Railway
Undesrtanding ideas
1. adv. 平稳地
2. adj.巨大的
3. adj.脆弱的
4. n.地标
5. adj.壮丽的
6. n.永久冻土层
7. adj.西藏的
8. n.羚羊
9. n.空闲，闲暇
Undesrtanding ideas
单
词
清
障
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
steadily
massive
delicate
landmark
splendid
permafrost
Tibetan
antelope
leisure
Undesrtanding ideas
单
词
清
障
10. 空闲时
11. n.湿地
12. n.草原
13. n.辐射
14. adj.如镜面般的
15. v.徘徊
16. n.风景，景色
17. n.高原
18. n.经济
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
wetland
grassland
radiation
mirror-like
wander
scenery
plateau
at one's leisure
economy
Undesrtanding ideas
青藏铁路（Qinghai-Tibet Railway），简称青藏线，是一条连接青海省西宁市至西藏自治区拉萨市的国铁Ⅰ级铁路，是中国新世纪四大工程之一，也是世界上海拔最高、线路最长的高原铁路。
青藏铁路全长1956公里，分两期建成。一期工程东起西宁市，西至格尔木市，1984年5月建成通车；二期工程东起格尔木市，西至拉萨市，2006年7月1日全线通车。
Starting out
7 years of hard work and nearly 2,000 kilometers. Workers have finished replacing the track along all 1956 kilometers of the railway on the Qinghai-Tibet Plateau. The work began in 2010 with a total investment of close to 1.3 billion yuan.
The high-elevation line connects Xining, Qinghai Province with Lhasa, Tibet. It's the world's highest railway that boasts the longest section in plateau areas. Since its inauguration a decade ago, the railway has seen more than 118 million passenger trips and transported some 455 million tons of freight.
First phase
Scond phase
Understanding idaes
Extensive reading for
1. the main idea of the passage (skimming)
2. the main idea of each paragraph (skimming)
3. the organization of the passage
4. specific details in the passage (scanning)
Undesrtanding ideas
Sitting back in my seat, I can‘t quite believe that I’m about to travel along the railway that many foreign experts claimed was “impossible”. The train has been racing along steadily since it left Xining. All this time, the song “Sky Railway” has been playing inside my head. The words “railways like massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”.
靠坐在火车的座位上，我简直不敢相信，我将要沿着许多外国专家声称“不可能建成”的铁路旅行。火车从西宁出发，向前平稳行驶。一路上，《天路》这首歌一直在我的脑海中回响。当火车开过“世界屋脊”时，“一条条巨龙翻山越岭”的歌词显得格外生动鲜活。
Main idea: I'm about to travel along Qinghai-Tibet Railway.
Undesrtanding ideas
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.
修建青藏铁路的工人来自全国各地，而我就是其中之一。它历时数年建成，凝聚着我们攻克种种工程难题的全部心血。其中，如何保护脆弱的生态系统是需要我们首要问题之一。
Main idea: How to protect the delicate ecosystem was the top concerns of various difficult engineering challenges.
Undesrtanding ideas
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.
最先映入眼帘的地标性建筑是壮观的清水河大桥，它是世界上最长的高原冻土铁路桥。看！一群藏羚羊正从桥下走过，有的停下来悠闲地吃草。铁路桥下修建了三十三条野生动物通道，让动物得以在自然栖息地中安全自由地通行。就像现在的这群藏羚羊一样，野生动物们使用这些通道已有数年，它们似乎完全没有意识到我们正以每小时100多千米的速度呼啸而过。
Main idea: Thirty-three passages were built under Qingshuihe Bridge to allow animals move safely and freely.
Undesrtanding ideas
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.
为了避免破坏湿地和草原，我们在格尔木和拉萨之间建造了675座大桥，总长度约160千米。我们甚至将一块14万平方米的湿地迁往一个新的区域，以保护其独特的生态系统。
Main idea: 675 bridges were built to prevent damage to wetlands and grasslands.
Undesrtanding ideas
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.
火车一路疾驰，还没等我反应过来，我们就已经到达了唐古拉车站。它位于海拔5,000多米的地方，是世界上海拔最高的火车站。在这样的高海拔环境中，稀薄的氧气，多变的天气，还有强烈的紫外线辐射，这些恐怕是我们铁路工人面临的最大挑战。为了确保工人的身体健康，我们建造了多个制氧站。我们还会定期到低海拔地区休整。
Main idea: Several oxygen-making stations were tructed for railway workers.
Undesrtanding ideas
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.
火车经过措那湖时，一股自豪感和成就感在我心中油然而生。当年，我们沿着措那湖边用成千上万个沙袋筑起了一道二十千米的保护墙，使它免受建筑废料的污染。现在，措那湖离火车这么近，我好想伸手去触摸它那镜面似的浅蓝色湖面。湖中嬉戏的水鸟，在草原上游荡的牛羊，让这片风景充满勃勃生机。
Main idea: A twenty-kilometre wall along the lake were built to protect Cuona Lake from construction waste.
Undesrtanding ideas
The Qinghai-Tibet Plateau has been attracting people's admiration for centuries. Now, thanks to our efforts, passengers from all over the country have been enjoying these magical landscapes. I am proud that we built our “impossible” railway, and did so with the care that the environment deserves. It truly is an extraordinary “Sky Railway”.
几个世纪以来，青藏高原是无数人向往的地方。如今，由于我们的努力，来自全国各地的旅客都能亲眼观赏到这片神奇的土地。我们建成了一条“不可能建成”的铁路，并且给予当地环境充分的保护，我为此感到骄傲和自豪。青藏铁路真是一条了不起的“天路”。
Main idea: I am proud that we built our “impossible” railway, and did so with the care that the environment deserves.
Undesrtanding ideas
Organization
of the passage
Part 1: Para 1-2
When considering overcoming the most difficult engineering challenges, how to protect the delicate ecosystem was among our top concerns.
Part 2: Para 3-6
The challenges and solutions.
Part 3: Para 7
We built the Qinghai-Tibet Railway with care that the environment desreves.
Undesrtanding ideas
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 metres of wetland were
________________________ in order to protect its distinct ecosytem
Thirty-three passages
move safely and freely in their natural habitat
prevent damage to wetland and grasslands
a total length of about 160 kilometers
were moved to a new area
Undesrtanding ideas
Challenges Solutions
To make sure the workers stay healthy. _____________________________were constructed. The workers also enjoyed ______________ in lower areas.
To ________________________________ Thousands of thousands of sandbags were used to __________________________ along the lake to
____________________.
Several oxygen-making stations
regular breaks
protect Cuona Lake from consttion waste
build a twenty-kilometer wall
protect it from being polluted by construction waste
Undesrtanding ideas
Choose the best answer according to the passage.
1. What's the author's purpose in writing the passage
A. To prove that humans can conquer nature.
B. To highlight the amount of work required to build the Qinghai-Tibet Railway.
C. To praise the workers' efforts in building the Qinghai-Tibet Railway.
D. To prove that humans can't survive without nature.
Undesrtanding ideas
Choose the best answer according to the passage.
2. What do you konw from the passage
A. The splendid Qingshuihe Bridge is the worlds highest one built over permafrost.
B. Among the difficult engineering challenges, how to protect the wild animals was
the top concern.
C. A twenty-kilomter wall was built along Cuona Lake to protect it from construction
waste.
D. The speed of a train is limited to 100 kilomters an our on the Qinghai-Tibet
Railway.
Undesrtanding ideas
Choose the best answer according to the passage.
3. Which is right about the Qinghai-Tibet Railway EXCEPT_______
A. Tanggula Station is the highest station in the world.
B. Qingshuihe Bridge is the world's longest bridge built over permafrost.
C. Qinghai-Tibet Railway is the highest and longest the highest plateau railway in
the world.
D. Qinghai-Tibet has the largest number of bridges along its way.
Developing idaes
Intensive reading for
1. key words and expression in the passage
2. grammar structure in the passage
Undesrtanding ideas
Sitting back in my seat, I can't quite believe that I’m about to travel along the railway
that many foreign experts claimed was “impossible”. The train has been racing along steadily since it left
Xining. All this time, the song “Sky Railway” has been playing inside my head. The words “railways like
massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”.
sitting是动词的现在分词，作方式状语，与逻辑主语I是主动关系
关系代词that引导的定语从句，定语从句还原后为：many foreign experts claimed (that) the railway was impossible. 关系词在定语从句中作主语，不可以省略。
现在完成进行时，表示动作从某一时间开始，一直持续到现在，或者刚刚终止，或者可能仍然要继续下去。 其构成为：主语+助动词（have/has）+been+动词的现在分词+其他成分。
The Chinese have been making paper for two thousand years.(造纸一直在进行，并且会继续下去）
I have been learning English since three years ago.(学英语一直在进行，并且会继续下去）
Undesrtanding ideas
单句语法填空
1. “Can't you read ” Mary said, angrily _________(point) to the notice.
2. There is no greater pleasure than lying on my bck in the middle of the grassland, ___________(stare) at
the night sky.
3. When I was little, my mother used to sit by my bed, __________(tell) me stories till I fell asleep.
4. After ____________(hear) yur sad stories, he will say some words ___________are nice and warm.
5. Maybe you have a habit ___________ is driving your family crazy.
考试链接
pointing
staring
telling
that/which
hearing
that/which
Undesrtanding ideas
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.
关系代词who引导的定语从句， 修饰先行词people, 关系词在定语从句中作主语，不可以省略
taking动词的现在分词作状语，与逻辑主语the Qinghai-Tibet Railway是主动关系
overcome the challenges 克服挑战
点拨
非谓语动词作状语时，要看非谓语动词与句子主语之间的逻辑关系，
作状语的动词与句子主语构成主动关系时，要用现在分词形式；
构成被动关系时，要用过去分词形式；
表示目的，常用动词不定式，这时非谓语动词表示的动作与句子谓语动词的时间相比，是将来。
Undesrtanding ideas
1. When___________(complete), the museum will be open to the public next year.
2. ___________ (ask) who she was, she said she was Mary’s cousin.
3. ___________(return) to her apartment, she found her necklace missing.
4. ___________(see) the big snake, the little girl stood under the tree___________
(frighten) out of her life.
5. ___________(not know) her address, I can’t write to her to express my gratitude to him.
6. All night long he lay awake, ___________ (think) how to drive the American invaders
back home.
completed
Asked
Returning
Seeing
frightened
Not knowing
thinking
Undesrtanding ideas
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.
catch one's eys 吸引某人视线，吸引某人注意
eye-catching adj 因人注目的，耀眼的，明显的
built过去分词作后置定语
with+名词/代词+doing，作状语，表示伴随的状态，some和stopping之间是主动关系
悠闲地
现在完成进行时，表示从过去到目前一直持续并可能继续下去的动作
Undesrtanding ideas
单句语法填空
1. With a lot of difficult problems _____________(settle), the newly-elected president having a hard
time.
2. With all the magazines I needed __________(buy), I left the post office.
3. China's image is improving steadily, with more countries____________(recognize) its role in the international affairs.
4. The old couple often take a walk after supper in the park with their pet dog ____________(follow) them.
5. With the boy__________(lead) the way, we had no trouble finding the way to Beihai Park.
6. With time __________(go) by, I gradually realize the importance of health.
考试链接
to be settled
bought
recognizing
following
leading
going
Undesrtanding ideas
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.
fly by飞逝
present the greatest challenge
面临最大的挑战
海拔5000米
be located at/in+地点,位于...
Undesrtanding ideas
点拨
表达“位于...”的方法：
be located in/at：
lie in/at：
Located in the bottom level of McMillan Hall, the center is available to students for relaxing, studying, cooking, and eating.
这个中心位于麦克米伦大厅的最底层，可供学生们放松，学习，做饭和吃东西
Lying in the bottom level of McMillan Hall, the center is available to students for relaxing, studying, cooking, and eating.
Undesrtanding ideas
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.
自豪感和成就感
动词的现在分词作方式状语，与句子主语we之间是主动关系
保护...免受...之害
伸出手
独立主格结构：
名词/代词+现在分词，
名词/代词与现在分词之间是主动关系
使...生动起来
Undesrtanding ideas
1. ______________________(会议结束了), all of us went home.
2. ______________________(没有出租车了), we had to walk.
3. ______________________(天气允许的话), they will go on an outing to the beach
tomorrow.
4. ______________________________________(明天要做一个重要的讲座), the professor
has to stay up late into the night.
5. ___________________(问题得以解决), the quality has been improved.
6. ______________________(女孩盯着他), he didn't know what to say.
用独立主格结构完成句子
The meeting being over
There being no taxis
Weather permitting
An important leacture to be given tomorrow
The problem settled
The girl staring at him
Undesrtanding ideas
The Qinghai-Tibet Plateau has been attracting people's admiration for centuries. Now, thanks to our efforts,
passengers from all over the country have been enjoying these magical landscapes. I am proud that we built
our “impossible” railway, and did so with the care that the environment deserves. It truly is an extraordinary “Sky Railway”.
attract people's admiration 使人向往
现在完成进行时
定语从句：环境应该得到的（关爱）
Undesrtanding ideas
deserve 的意思是"值得""应该"，它的后面可以接动词不定式的，如∶
They didn' t desere to win. 他们不该赢。
They did'ot deserve to get such a high score. 他们不该得那么高的分数。
但是，如果当它后面所接动词具有被动意义时，也可用动名词，且这个动名词要用主动形式表示被动意义;此时若将动名词改成不定式，则要用被动形式。如∶
The man deserves punishing/to be punished. 他这个人应该受到惩罚。
He deserved sending/to be sent to prison.他应当被送进监牢。
点拨
See you next time