unit5 the power of the nature 精品课件

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Unit 5
The power of nature
Warming up
高二人教新课标版选修六
Have you ever considered how weak
humans are compared with a volcano,
hurricane or earthquake
Can you list some natural
disasters
natural disasters
sandstorm
typhoon
flood
hurricane
tornado
earthquake
tsunami
landslide
snowstorm
drought
Have you ever
seen a volcano
an extinct volcano(死火山)
an active volcano
types of volcanoes
a dormant volcano(休眠火山)
Where is most possible
for a volcano to erupt
Near the oceans.
What do you know about volcano
Do you know how a volcano erupts
How is a volcano formed
The rocks under the earth become hotter and hotter and erupt from the mountain.
Boiling rock erupts from the crater
(火山口); the lava(熔岩) flows slowly
down the mountain.
gas
liquid
solid
lava (熔岩)
vapour, carbon dioxide, nitrogen (氮), sulphur (硫磺)
bits of rock and volcanic ash, etc.
Imagine
Would you like to be a volcanologist to observe and study volcanoes
Unit 5
The power of nature
Reading
高二人教新课标版选修六
Pre-reading
volcano
Who will climb into a live volcano to
take the temperature of the boiling
rock inside
volcanologists
Collect and evaluate
information about
volcanoes.
What kind of things might a
volcanologist do
Are you suitable for being a volcanologist
Questions Yes No
1. Do you like working outside as well as inside
2. Do you enjoy travelling to unusual places
3. Do you enjoy taking risks
4. Do you dislike doing the same thing everyday
5. Do you like adventure in your life
6. Are you interested in studying rocks and other things that make up the surface of the earth
An Exciting Job
Working as a volcanologist
What might be talked about
What does a volcanologist do
Is the work important
His work can help save many lives because
people in the path of the lava can be warned
to leave their home.
The writer expressed his love for
his job as a volcanologist and told
us one of his unusual experience
in Mount Kilauea, Hawaii.
What’s the main idea of the article
Part 1(Para 1-2)
Part 2(Para 3-4)
Part 3(Para 5)
The writer’s job and its importance
The writer’s experience
of watching the volcanic eruption
The reasons for the writer’s enthusiasm about his job.
Read again and try to find out
main ideas of each part.
Part one
(Para. 1- 2)
1. Why is a volcanologist’s job important
2. Where is Mount Kilauea
3. The writer doesn't mind the occasional
danger of his job because ______________
_____________________.
It can warn people when the volcano
is going to erupt and save many lives.
In Hawaii.
him and makes him feel alive
danger excites
Job: ____________
--- _____________________________
---______________________________
______________________________
importance: ______________________________
_______________________________________
__________________
feelings (adj.): _____________ -- __________
-- ___________
Fill in the blanks.
volcanologist
collect information for a database
help scientists to predict where
lava will flow and how fast
protect ordinary people from volcanoes
excited
/Save people’s lives by warning them to
leave their homes.
never bored
feel alive
Part two (Para. 3- 4)
4. Why is the lava that flows on Mount Kilauea
more dangerous than the actual eruption
The lava can cover up or burn villages in
its path. The rocks from the volcano usually
don’t damage anything because no one
lives near the crater.
my bed began shaking
a strange sound
My bedroom became as bright as day
an abosolutely fantastic sight
red hot lava was fountaining hundred
of metres into the air
5. What made the author realize that an
eruption occurred
The light was caused
by the red-hot rocks
and gas that erupted
from the volcano.
put on white protective suits, helmets,
big boots
dropped as closed as possible to the crater
slowly make our way to the edge of the
crater
looked down into the red boiling center
6. What did the scientists do after the eruption
7. What does the writer mean by using “lucky”
in the sentence “I was lucky enough to have
a much closer look at it.”
8. Why did the scientists have to get close to
the volcano after it began erupting
To get some lava for later study.
It was his first sight of an eruption.
It was the first time for him to watch the crater.
9. Why was it difficult for the writer to walk
towards the edge of the crater
The writer wore special protective suits
that made it difficult to walk.
My first experience:
I was ____ asleep when my bed began _______
and I heard a _______ sound, like a ______
passing nearby. Then I found my bedroom was
as ________ as day, and red lava ___________
hundreds of meters into the air.
fast
shaking
strange
train
bright
fountaining
Fill in blanks about the writer’s
experience of the volcano.
The next day, three of us wanted to get close
to the ______. We put on ___________suits,
________, big _______ and special ______,
which made us look like __________. We
slowly ________________ to the edge of the
crater to collect some _____ for ____________.
helmets
boots
gloves
spacemen
made our way
lava
later study
protective
crater
Part three(Para. 5)
10. What does the writer find impressive
even after studying volcanoes for more
than twenty years
The author is impressed by the beauty
of the eruption and also by its potential
to cause great damage.
Analyze the writer’s feelings(Part 3)
Find out the words (para1 and para 5) that
indicate the writer’s feeling about being a
volcanologist.
Para 1: never bored; excited; alive;
An Exciting job
Para 5: enthusiastic; amazed
The writer is an adventurous man.
The writer loves his job very much.
3. It’s not easy to be a volcanologist.
4. Love and interest is what it takes to
do a job well.
5. Courage …
What can we learn from these words
1. Having learnt a little more about the
work of a volcanologist, do you think
it is an occupation you would enjoy
Give your reasons.
2. In pairs discuss what skills you think a
volcanologist should have. Make a list.
Post-reading
No, I probably wouldn’t enjoy this job
because I would have to live in other
countries and also I don’t like being in
dangerous situations. Also, I’m not very
good at science.
Suggested answers:
Yes, I’d love to do a job like this because
I would enjoy working outside and I think
I would enjoy the adventure. It would be
exciting to meet people from different
countries and I would feel good about
helping people avoid danger.
or
Essential skills
Degree and/or Doctor’s degree in geology
Interest in Earth science which includes:
Knowledge of volcanoes
Knowledge how magma erupts and how
it behaves
Research skills
Skill in analyzing and interpreting research
results and other information
Practical skills for performing experiments
and operating scientific equipment
Desirable skills
Computer skills
Foreign languages
Practical skills such as:
the ability to read maps
problem-solving skills
planning and organizational skills
communication skills
writing skills, for writing reports
and for publications
1 Fred Spears works in a wildlife park looking after wild animals; loves nature and spends his holidays climbing mountains
2 Susan Kelp has studied geology at university; very interested in volcanoes; has visited Mount Etna in Sicily, Italy
3 Charles Wild is a medical doctor; works in a laboratory doing research on disease; loves adventure holidays; wants to analyse volcanic samples
Look at these three people who would like
to study volcanoes. Which one would you
choose to become a volcanologist
Give your reasons.
Fred Spears:
He has the interest but not the qualifications.
So he is not a good choice to become a
volcanologist.
Susan Kelp:
She has studied geology and has an interest in
volcanoes. She has all the necessary qualifications
but she does not have practical experience
devising experiments and analyzing data.
Charles:
He is a medical doctor with an interest in
volcanoes. He has experience of conducting
experiments but does not have the specific
qualifications needed to become a
volcanologist.
I would choose Susan Kelp because she has
the necessary qualifications and the interest.
Although she has not yet conducted
experiments she will either have learned the
techniques during university course or be able
to learn them on – the – job. She seems to be
the most suitable candidate.
So
Unit 5
The power of nature
Learning about language
高二人教新课标版选修六
Discovering useful words and expressions
1 Replace the underlined parts with a word or phrase of similar meaning from the text. Rewrite the sentence if necessary.
We received the written set of questions
from the company as they were eager to
find out our opinion on their products.
the questionnaire
2. The car drew up next to the side of our
car and the driver waved to us.
3. The scientists were studying carefully
to see how successful the experiment is.
alongside
The scientists were evaluating the experiment
4. I moved carefully over the fallen
rocks and returned to the car.
5. I think the boy is likely to achieve
success in painting, but he needs
training.
6. The teacher was given the job
because he was the best candidate.
made my way
has potential
appointed
7. It is certain that the factory will
greatly raise their efficiency if
they have modern machines and
tools.
8. Charles looked at the drawing
that shows how the machine
works and knew immediately
what was wrong with it.
equipment
diagram
2 Complete the paragraph with the
words in the box in the correct forms.
burn to the ground absolute volcano
eruption wave fountain ash
lava erupt
The eruption of Mount Vesuvius in 79
AD took the people of Pompeii by surprise.
They had always known that the mountain
was a _______ but it had been quiet for
so long that nobody saw it as a threat.
When the volcano finally did _____,
volcano
erupt
it was so quick and so severe that the
town was soon covered in ____ and ____.
A writer called Pliny, who was there
during the ________, described how lava
was thrown into the air like a ________.
After it fell to earth, it turned into _____
of lava which travelled down
ash
lava
eruption
fountain
waves
the mountain faster than people could
run away. It was an _______ disaster for
those who could not escape in time. Many
of the wooden houses and bungalows in
Pompeii were ____________________, but
the stone houses remained under the ash
until they were rediscovered during the
20th century.
absolute
burned to the ground
Revising the –ing form
本课时重、难点
重点:
①动词-ing形式的作用
②动词-ing形式在做状语时的作用
难点:
动词-ing形式的一般式与完成式的区别
观察下列例句, 思考划线部分作用。
(1) This is an interesting book. ( )
(2) The man sitting by the window is our
maths teacher. ( )
(3) Seeing the teacher entering the room, the
students stood up. ( )
(4) I saw the boy walking on the stree
yesterday. ( )
(5) Playing football is his favotire sport. ( )
(6) I didn’t stop working last night. ( )
(7) My work is teaching English. ( )
定语
定语
状语
宾补
主语
宾语
表语
归纳总结：
◆动词-ing是 ________________ 中的一种，
单独使用时, 能在句中做除_________
之外的任何其他句子成分。如: 主语、
宾语、表语、定语、状语、宾补等。
◆在语态上，动词-ing表示 ________
(主动/被动的动作)。
在时间上, 动词-ing一般表示 _________
(正在进行/已经完成)的动作。
动词非谓语形式
谓语
主动
正在进行
Looking carefully at the ground, I
made my way to the edge of the crater.
Having experienced quite a few earthquakes
in Hawaii already, I didn’t take much notice.
The –ing form used as an adverbial:
用法 例句
时间
Walking along the street, I met Mary. (= While I was walking along the street….)
在街上走的时候, 我遇到了玛丽。
一、动词-ing形式作状语
用法 例句
原因 Being tired, I stopped to take a rest. (= Because I was tired, …)
因为疲倦, 我停下来休息。
条件 Turning to the left, you will find the school. (= If you turn to the left, …)
向左走, 你就会找到那个学校。
用法 例句
让步 Knowing where I live, he never come to see me .
(= Though he knows where I live, …)
尽管他知道我的住处, 但从不来看我。
用法 例句
伴随 I stood there, waiting for her.
(= …, and waited for her.)
我站在那儿等她。
结果 It rained heavily, causing severe flooding in the area. (= It rained heavily so that it caused severe flooding in the area.) 在这个地方雨下的如此大, 以至引发了洪灾。
二、动词 –ing形式的完成式
句型 主动 Having + p.p. …,
主语+谓语
被动 (Having been) + p.p. …, 主语+谓语
用法 1) –ing形式的完成式所表示的时间在谓语动词之前
2) 表示被动可直接用过去分词
例句 Having finished my work, I went home. (= After I had finished my work, …)
工作做完之后, 我就回家了。
例句：
(Having been) written in haste, the book has some faults.
这本书因仓促写成, 所以有些缺憾。
观察下列2个句子, 体会having done与
doing的不同用法:
1) Having written the letter, John went to
the post office.
2) Seeing the beautiful sight, the children
felt excited.
总结:
V-ing
doing
having
done
表动作有先有后
表动作同时发生
一般式
完成式
Exercise 1:
1) ____ the child to bed, she began to
correct the students’ homework.
A. Sending B. Being sent
C. Sent D. Having sent
2) Be careful when / while ________
(cross)the street.
3) ________________ (听到这个消息),
we got excited.
crossing
Hearing the news
D
举一反三 :
①
②
V-ing
doing
having
done
一般式
完成式
being done
having been
done
主动
被动
Exercise 2:
1) 她被蛇咬了三次后, 她看见蛇后就害怕。
__________________________________
__________________________________
___________________________________
2) 正在进行的那个会议非常重要。
__________________________________
__________________________________
Having been bitten by the snake
for three times, she feels frightened
The meeting being hold now is
of great importance.
when seeing the snake.
1) ______________ him the answer several timeS,
I did’t know whether he could understand.
2) _________________ the answer several times,
he still couldn’t sovle the question.
Having told
Having been told
Exercise 3: 用having been told /
having told填空：
主动
被动
归纳
主句主语为动作的发出者。
主句主语为动作的承受者。
1. 分词 (短语) 作状语时, 其逻辑主语
必须与句子的主语一致。如果不一致,
必须用独立主格结构来表示, 也就是在
分词前面加上它的逻辑主语。
三、使用- ing形式需注意的几个问题
Comparing all the great people with each other,
you’ll find that they have much in common. 　　
Finding her car stolen, she hurried to a
policeman for help.
The train having gone, we had to wait another
day.
分析:前两例中, -ing形式的逻辑主语均为
主句的主语。最后一例中having gone的
逻辑主语是 the train。
My wife had a long talk with Sally,
explaining why she didn’t want the
children to play together.
我妻子与莎莉谈了很长时间, 解释她
为什么不想让孩子们在一起玩。
分析: 现在分词explaining是句子主语
my wife做的动作,它们之间是主动关系,
即explaining的逻辑主语, 就是句子的
主语my wife。
一般来说, -ing形式表示主动、进行;
过去分词表示被动、完成。试比较: The enemy fled in a panic, leaving behind
a lot of dead bodies and weapons. Defeated and frightened, the enemy fled
in a panic.
2. 与过去分词作状语的区别
分析: 前一例中的-ing形式短语在句子中作伴随状语,
它与其逻辑主语the enemy之间为主动关系; 后一句
中的过去分词defeated和frightened表原因, 它与其
逻辑主语the enemy之间为被动关系。
3. 分词短语做状语时, 前面可以加上连词
或介词, 但是分词短语和句子之间不能用
并列连词(如but, and), 因为并列连词接的
是两个并列成分, 而分词短语只是全句
的一个状语部分, 分词和主句之间可用
逗号。
When seeing from the top of the hill, you can enjoy the whole beauty of this city.
误: Having been told many times, but he
still couldn’t understand it. 正: He was told many times, but he still
couldn’t understand it. 或
Having been told many times, he
still couldn’t understand it.
4. -ing的一般式和完成式现在分词都
可以表示先后接连发生的动作。
在可能引起误解的场合应该用完成式
现在分词表示先发生的动作。如:
Having brushed his teeth, Mr. Brown
came downstairs for breakfast.
布朗先生刷过牙, 就下楼来吃早饭。 (此句如写成: Brushing his teeth, Mr.
Brown came downstairs for breakfast.
可能指 “边刷牙, 边下楼)
Coming into the room, he put down his bag. (=He came into the room
and put down his bag.)
他走进房间, 放下提包。
Opening the drawer, he took out his
wallet. (=He opened the drawer and took out his wallet.)
他打开抽屉, 拿出钱包。
Not fearing the fire, the child touched
and got a finger burnt. 小孩儿不知道 怕火, 用手去摸, 把手指烫了。 Not knowing how to find the subway,
I asked a policeman for help. 我不知怎样找到地铁, 就去找警察帮忙。
5. 分词的否定形式是在分词短语前面
加上 not, never等否定词构成。如:
Unit 5
The power of nature
Using language
高二人教新课标版选修六
A
B
C
1 look at the pictures below and guess what problems volcanologists have to face. Then listen to the tape and see if you were right.
2 Listen to three volcanologist's talking about their most frightening experience. Write their names under the pictures.
A
B
Sarah Tang
Frank Gore
Jane Small
C
3 Listen again and fill in the chart.
Name Jane Small
Length of time as a volcanologist
Where was the volcano
When was he/she no longer frightened
5 years
Alaska
After collecting a
sample of lava
Name Frank Gore
Length of time as a volcanologist
Where was the volcano
When was he/she no longer frightened
10 years
Hawaii
When back on dry land
Name Sarah Tang
Length of time as a volcanologist
Where was the volcano
When was he/she no longer frightened
20 years
New Zealand
After the trembling she
became excited and
forgot to be frightened
4 Listen to the tape once more. Write the names of the person besides the emotional expressions they talked about.
1. I became so excited that I forgot my fear.
Jane
2. At first I was afraid that the volcano would erupt while I was still inside it.
Sarah
3. I was trembling as much as the ground- and was sweating too!
Sarah
4. After that, I was never so frightened again but I’m always careful.
Jane
5. I was so anxious and couldn’t move at first.
Jane
6. I felt very nervous and had to force
myself not to panic.
Frank
7. After that I became excited by the
experience and forgot to be frightened.
Sarah
8. I had never felt so happy as I landed
safely.
Frank
Speaking
Think of a powerful natural disaster (such as
an earthquake, food, typhoon, storm) that you
have experienced. You can use your imagination
if you have not experienced any of these things.
Tell your partner about your experience and
how you felt.
Jane and I had been waking in the mountains when we noticed some dark clouds coming down the mountain. We decided to turn around and go home.
As we walked the clouds got nearer and nearer and the day grew darker. Then all of a sudden it began to snow. It was soon snowing so hard we couldn’t see very far in front of us.
Sample
Holding each others’ hands so we couldn’t get separated, we continued down the mountain. But the snow got deeper and deeper. Walking became harder and harder. We began to get very tired and very frightened. After a while the path became buried under the snow and we didn’t know which way to go.
We were completely lost. We found some shelter behind a big rock. Hugging each other for warmth, we stayed like that until the storm was over. Luckily it only lasted an hour or two. Then the sun came out again and we could see our house in the distance. We were so relieved that we both burst into tears.
Some tourist attractions in China
Reading
Giant panda
Research Center
The Lake of Heaven
天池
Fast Reading
Read the text quickly and find out the
key words(关键词）of each paragraph.
Paragraph 1
Paragraph 2
Paragraph 3
Paragraph 4
Changbaishan
Tianchi
stories
coin
Careful Reading
Paragraph 1 Changbaishan
Read the passage carefully and
finish the following tasks.
Location
Position
Height
Rare animals
The aims
of visitors
The most attraction
Jilin Province, Northeast China
China’s largest nature reserve
varies from 700 m to 2,000 m
cranes, black bears, leopards
and Siberian tigers
To study the plants and animals;
walk in the mountains;
see the waterfalls ;
bathe in the hot water pools
Tianchi, the Lake of Heaven
Paragraph 2 Tianchi
introduction
height
depth
sights
Deep lake has formed
in the crater.
2, 194m
more than 200m
the crystal clear water
the other sixteen mountain
peaks
Paragraph 3 Fill in the blanks with some persons or animals to complete the chart.
bathing
flew
dropped
fruit
swallowed
pregnant
gave birth to
father
Three young women
from heaven
A bird
The youngest
girl
A handsome
boy
The Manchu
people
Paragraph 4
coin
You and your ______ one drop
a ____ into the clear, blue water
to _________ your love will be as
_______ and _______ as the lake.
loved
coin
guarantee
deep
lasting
In what province is Changbaishan
What is a nature reserve Why is
Changbaishan a famous nature reserve
3. What is the most popular tourist attraction
in the reserve
Detailed reading
In Jilin Province.
A place kept in its natural state for people
to enjoy. It is the largest one in China.
Tianchi, or the Lake of Heaven.
4. What does Tianchi mean How is Tianchi
formed
5. What is the connection between the Manchu
people and Tianchi
The Lake of Heaven.
It is formed in the crater of a dead volcano.
There is a story told about Tianchi
and the father of Manchu people.
True or false
1. Changbaishan is the second largest
nature reserve in China.
2. The peak of Changbaishan can
reach as high as 2,000 meters.
F
T
3. You can see a lot of black bears,
leopards or cranes in Changbaishan.
4. Tianchi is a lake in the crater of an
extinct volcano.
5. The ancestors of the Manchu people
were believed to be good at language
and persuasion.
F
T
F
Discussion
If you were a tourist guide(导游), how
would you introduce the Lake of Heaven
in Changbaishan to the tourists
Changbaishan
Tianchi
story
coin