Unit 4 The Planet We Live on 完整课件

(共98张PPT)
Unit 3
Living Planet
Treat the earth well. It was not given to you by your parents but lent to you by your children.
How do you understand these two sentences
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Contents
1. Looking Ahead
2. Getting Ready
3. Reading
4. Language Focus
8. Further Reading
5. Grammar
6. Listening and Speaking
7.Writing
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Looking Ahead
Learn something about the earth.
Learn the suffixes -ance and -ence.
Practise using the past participle as the predicative and object complement.
Practise expressing worries.
Learn to write a note.
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Period 1
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What do you know about the sun, the moon and the earth Write down the words you often use when talking about each of them.Brainstorm as many words as possible.
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hot
bright
shining
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bright
satellite
rock
huge
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water
sand
round
flat
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Look at the picture of Earth and try to complete the short paragraph with proper words.
What does Earth look like This photo shows what Earth looks like from a spaceship. If you were on the spaceship, you’d see a huge _____and______ ball. The blue parts are the______ that are on Earth and the white parts are______ . The clouds are part of ________ atmosphere.
blue
white
ocean
clouds
Earth's
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Earth is not perfectly______.The parts we call
“top” and “bottom” are a little_____.We call
the top part the_____Pole and the bottom
part the______Pole.Earth is just the right
distance from the sun. It’s not too____ or
too______.That's why people and other
things can live on _____.Earth is the only
planet we know of that has_____.
round
flat
North
South
hot
cold
Earth
life
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Work in groups to share what else you know about the earth.
The earth , as well
as the sun and the other planets in our solar system, was formed at least five billion years ago.
of or connected
with the sun
not less than
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The Earth was formed from the shrinking and clumping together of a vast cloud of dust and
gas in outer space.
Nearly three-quarters (71%) of the earth’s surface is covered with water. One-fourth of the earth’s surface is land.
to become smaller
in size or amount
to come together
to form a tight
group
on the outside of sth.
to lie or spread over the
surface of sth.
Antarctic
Arctic
South Pole
North Pole
ant-/anti-: opposed to
Equator 赤道
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Skim the text first. Then rearrange the following phrases based on the text. The first one has been done for you.
3
7
6
1
5
2
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C
B
Scan the text. Choose the best answer to complete each of the following sentences.
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3) It may take you_____ to climb Mount Everest,
which is a little____than 5.5 miles above sea level.
A. months... less B. months... more
C. weeks... more D. weeks... less
4) Much of the land on the earth is covered with
_____.
A. sand or soil B. water
C. forest D. rock
C
A
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5) The biosphere refers to _____.
A. gas, water and soil
B. any region on the earth
C. all living things
D. the region from the bottom of the sea to
the top of the thickest part of the atmosphere
C
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F
F
N
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T
N
T
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The key to the chart:
7,900: diameter of the earth
5.5: height of Mount Everest
71%: coverage of water on the earth’s surface
2: average depth of the oceans
one-fourth: coverage of land on the earth’s surface
20: depth of the soil in which crops grow
one-fifth: coverage of ice on the earth’s surface
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Work in groups and write a report entitled “Earth in Numbers” based on what you’ve got in the chart above.
You may begin like this:
Earth, our home planet, is the only planet in our solar
system known to protect life. It is the third planet from the sun and the fifth largest in the solar system…
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What do you know about the other planets in our solar system Collect the related information first and then share your information with your partner.
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Period 2
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Work together with your group members and try to retell what we have learned last period, according to the following phrases.
the formation of the earth
the size and shape of the earth
comparison between the highest mountain and the earth
water on the earth's surface
comparison between
the land and the earth
the atmosphere of the earth
the biosphere
There are four apples on the screen, each of which contains several new words inside. Every group chooses one apple to work out the words inside. Then the group members take turns to explain the words to the whole class.
1
2
4
3
Locate the words in the text and guess the meanings in the context first, or use what you have learned before to help you work out the meanings.
form
shrink
clump
flatten
swell
stable
depth
play a very important role in…
film
beneath
relatively
make up
rise
envelope
covering
climber
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shrink-shrank-shrunk/
shrink-shrunk-shrunken
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on which 是一个介词加关系代词的结构，这个关系代词也是介词的宾语。
(1)在这种结构中介词的选择从两方面考虑。第一，
与先行词的搭配关系，第二，与从句谓语动词的
搭配。如：
There wasn‘t a single person on the dark street ___
(on/to)whom she could turn for help.
(2)在口语中，介词与关系代词分开，也可以省略。
注意：关系代词在紧跟介词时，只能用Which,
不能用that，也不能省略。
...the earth, the planet on which we are living...
which/that/we are living on...
to
turn to sb. for help
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Guess the meanings of "form" in the following sentences.
1. He has formed the habit of getting early.
2. A plan formed in my head.
3. The teams formed up into lines.
4. The earth is the only planet on which water can
exist in liquid form.
5. He 's filling in an application form.
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to become or make sth.
flatter
What does “that”
refer to
to curve
swell-swelled-swelled/swollen
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diameter
radius
with a diameter of...
= which has a diameter of...
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climb(v.) + er = climber(n.)
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have an important
effect on sth.
relative(a.) + ly = relatively(adv.)
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Make up
Find out the meanings of "make up", according to the following sentences.
1. Animal bodies are made up of cells.
2. We still need $100 to make up the sum required.
3. I couldn't remember a story to tell the children, so I
make one up as I went along.
4. You must make up time you wasted this afternoon by
working late tonight.
5. The actor made up for the part of an old man.
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the noun form of "deep", and
how about other words, such
as wide, high, long
under/below
Here the word film means
______.
A. motion picture; movie
B. roll of thin material used
for making photographs
C. covering on or over sth.
C
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Tick the sentence in which
the meaning of envelope is
similar to that in the text.
A. I need some envelopes
to mail the letters.
B. The earth is enveloped
by air.
C. The air is a protective
envelope for our planet.
a layer of sth.
that covers sth. else
C

E
H
A
D
C
G
B
F
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Fill in each blank of the following sentences with
the proper form of a word in Task 1.
1) What is the_____ of this lake
2) The little girl was shocked to see the
cat _______by a passing car.
3) After weeks at sea, it was wonderful to feel
firm ground _______ our feet once more.
4) Few of these monkeys still _____ in the wild.
depth
flattened
beneath
exist
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5) After several part-time jobs, he’s now got a _____ job in a bank.
6) Her ankle _____ up after the fall from
the bed.
7) Do you know that washing wool in hot
water will make it _____
8) _____ power is obtained from the sun’s
light and heat.
Solar
swelled
shrink
stable
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take up
too
to
is covered with
compared with
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more
than
as many as
look
like
on the surface
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distant + -ance → distance ( n.)
exist + -ence → existence ( n.)
Study how the words are formed and then try to complete the chart below.
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appear
assistance
perform
absence
convenience
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violence
attend
patient
significance
refer
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patience
convenience
performed
references
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appears
attendence
significance
violence
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9) The shop-assistant ought to be one who
_________the customers when they do
shopping.
10) Tom is so seriously ill that he is_______
from school today.
assists
absent
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Period 3
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The Past Participle as the Predicative and
Object Complement
Step 1
Studying the rule
Read the following sentences carefully, paying attention to the coloured parts, and then divide them into two
groups.Tell the reasons for your classification.
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ACDE
BF
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Step 2
Finding the rule
Study the following examples carefully, paying attention to the colored parts, and then tick out the correct answers in the Features column.
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√
√
√
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Step 3
Applying the rule
Tick the sentences in which past participles are used as the predicative or object complement.
Write P for the predicative and OC for the object complement.
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√
√
P
P
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OC
OC
√
√
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He seems delighted at the news.
Everybody thought the battle lost.
I have my hair cut every ten days.
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He once heard the song sung in German.
All the guests I visited are arrived.
When I saw her last time, I found her greatly changed.
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Look at the following pictures. Make up a short story with your partner. You should use the words given and
the past participle as the predicative or object
complement.
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Period 4
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Word Game
Choose two students in each group. The teacher will give a card to Student A. Then student A explains the word without saying the word out and Student B guesses the words according to Student A's explanation. Each group will take turns to guess the words. The team who can guess the most words in one minute will win. For example:
Student A: It's an adjective. It means "once a year"
Student B: Annual.
The words on the card come from this unit’s vocabulary.
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D
E
C
B
A
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annual event
global
environment
adopted
175
save
= valuation
a person who wants to make social or political changes
celebrate
= meeting
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Day 2000 highlighted the urgent need for clean and green energy. Earth Day 2007 was huge, with a billion people participating in thousands of activities. And the 2009 Disney movie Earth______________of the many ways people can help our planet on Earth Day.
= stress
that needs to be
done immediately
raises awareness
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Each group will answer one of the following questions. Then share the answers with the whole class.
1) Why do people celebrate Earth Day
2) What does a global holiday mean
3) What activities do you think we will have on Earth
Day 2012
4) What can we do to help save our earth
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Discuss in groups:
1. What pollution is the earth suffering from now
2. What should we do to protect the earth
(You may use the following expressions in your
discussion.)
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=busy
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respect (v.) +ful + ly = respectfully (adv.)
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Note
Type
Sentence to indicate the type
A
B
appointment
Could we meet for about an hour at the Cooper’s on Monday afternoon at 3 o’clock
apology
I’d like to express my apologies for
not being able to take part in your
birthday party…
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C
D
asking for leave
borrowing
I am terribly sorry that I shall be unable to attend this morning’s two periods of English Class due to a bad cold and high fever.
I wonder if I could borrow your electronic dictionary for a few days.
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Step 1
Choose one of the situations to write the draft with the help of the above notes.
Step 2
Check the mistakes by yourself.
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Step 3
With the help of the following checklist, edit your partner's note.
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Step 4
Proofread your own note carefully and then hand in your final draft to the teacher.
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Period 5
What jumps into your mind when you see the word “Climate” Can you share your opinion with your partners.
Climate
temperature
precipitation

weather

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Discuss the following questions with group members based on the passage in student book p.43.
1) What is climate What is weather How do you distinguish them
2) How many different types of climate are there on earth mainly What are they
3) What elements may cause climate differences
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C
A
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What affects climate How it affects climate
many things in nature, such as sunshine, temperature and precipitation
nearness to mountains, oceans, and large lakes
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Altitude
Winds
They move heat and moisture between the oceans and continents. Winds keep the tropics from overheating. They keep the polar regions from getting overly cold.
Air cools as altitude increases.
What affects climate How it affects climate
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long period of time
dinosaurs
sun
atmosphere
human activity
colder
Air pollution
forest cover
climate
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(the amount of) rain or snow
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Work in group of four and discuss: How is climate closely related to our life and how do we influence climate Write as long a list as possible and then report to the whole class.
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Locate the following words or phrases in the text and then work them out with your group members.
extremely, thunderstorm, climate, affect, nearness, keep...from, overly, eruption, block out
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extreme(a.)+ly
=extremely(adv.)
thunder+storm=thunderstorm
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affect vs. effect
affect (vt.) a. The amount of rain
affects the growth of crops.
b. She was affected by today's news.
c. He affected not to see her.
effect (n.)
This had a great effect upon the future of both mother and son.
what is the difference
between them
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near(v.) + ness = nearness(n.)
=very, too (adv.)
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keep ... from = prevent ... from
Write down other related phrases as much as possible and make a sentence for each phrase.
keep at sth.
keep doing sth.
keep on doing sth.
keep up (with)
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erupt(v.) +ion
=eruption(n.)
to stop sth. from coming in
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Surf the internet to find more information about
the Earth or the climate and then make a poster
to introduce it to your classmates.