仁爱科普版九年级上册Unit 1 The Changing World Topic 2Section C 课件(共29张PPT)

(共29张PPT)
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The population in developing countries is ________ than that in developed countries.
Which country has the largest population
What’s the population of China
larger
extended family
nuclear family
What policy has China already carried out to control the population
2. What kind of family do you belong to, extended family or nuclear family
1a. Before you read the passage, discuss the questions with your partner
1. Why does China carry out
the one-child policy
2. What social problems do you think China’s large population has caused
1a Read and understand.
2. Write the title of the passage.
1b Read 1a and match the main idea with each paragraph.
1. _____ Paragraph 1 A. the measures to deal with the
problems
2. _____ Paragraph 2 B. the world’s and Asia’s population
3. _____ Paragraph 3 C. the problems caused by large
population
Population Problems
B
C
A
1c Read 1a again and complete the table.
Population of China ____________________
Social problem less ______________
fewer _______ opportunities
less _______ and ______
crowded ________
heavy _________
________ natural environments
Government measure _____________________
1.3 billion
job
energy
water
cities
traffic
worse
the one-child policy
living space
Asia has a population of _____________. That’s to say, almost ______ of the people in the world live in Asia now.
more than 3 billion
half
Paragraph 1
The world’s and Asia’s population.
3 billion÷ 6.8 billion≈1／2
(half)
50 percent (50%)
Almost half of the people in the world live in Asia.
1.3 billion÷6.8 billion≈1 ／ 5
20 percent (20%)
About one fifth of the people in the world live in China.
one
What social problems has it caused
Paragraph 2
The problems caused by large population.
fifth
Because of the large population,
there is __________________ for each family.
less living space
Because of the large population,
it is difficult for lots of people ______________.
to find jobs
Because of the large population,
it is hard for China to supply _______ and ______ to satisfy people’s daily needs.
energy water
满足人们日常需要
Because of the large population,
most cities are ______________ than before, and the traffic is much __________.
more crowded
heavier
Because of the large population,
natural environments are becoming _______
_____________.
worse
and worse
越来越糟糕
The one-child policy
— Every couple can have only one child.
So far, the one-child policy has worked well in
controlling China’s population.
We still have a long way to go.
Paragraph 3
The measures to deal with the problems.
Retell the text according to 1C.
Population of China ____________________
Social problem less ______________
fewer _______ opportunities
less _______ and ______
crowded ________
heavy _________
________ natural environments
Government measure _____________________
1.3 billion
job
energy
water
cities
traffic
worse
the one-child policy
living space
work well in controlling
a long way to go
3a Work in groups and search for the information
about the following questions. Then share your
idea with your group members.
1. How do you think we can get more living space
2. What should the government do to offer more
job opportunities
3. The energy and water is less and less. What
should we do to deal with it
4. The traffic in cities is much heavier than before.
How can we solve the problem
1.How can we get more living space
2. What should the government do to offer more job opportunities
less population, more living space
one-child policy
develop economy
reform and opening-up
3. The energy and water is less and less, what should we do to deal with it
4. The traffic in cities is much heavier than before, how can we solve the problem
save , new energy
take a bus, walk, ride bikes
1. Read the fractions in English.
2. Talk about population problems.
1. Some words:
social, supply, natural, worse, government,
paragraph, opportunity, newborn, percent, offer
2. Some phrases:
half of, one fifth, because of, satisfy people’s daily
needs, so far, take measures to do, be known as,
work well in, thanks to
3. Some sentences:
We still have a long way to go.
Choose the best answer.
1. _____ of the students are boys in our school.
A. Two third B. Two threes
C. Two thirds D. Second three
2. The one-child policy has _____ controlling China’s
population.
A. been good at B. done well in
C. taken care of D. worked well in
3. Edison is known _____ a great inventor.
A. for B. as C. in D. on
4 ._____ your help, I made great progress in math.
A. Thanks for B. Thanks to
C. Thank to D. Thank for
C
D
B
B
5. So far, we ____ to sing five English songs this term(学期）.
A. learned B. have learned
C. are learning D. will learn
6. -- _____ the bad weather, we can’t go out for a picnic.
-- What a pity!
A. Thanks to B. Because of
C. For example D. In fact
7. – What do you think of the concert
-- Very well! Some new skills work well ____ playing music.
A. in B. at C. of D. for
B
B
A
Retelling
Asia has a population of more than 3 billion. That’s to say, almost half of the people in the world live in Asia now. About one fifth of the people in the world live in China. Because of the large population, there is less living space; because of the large population, it is difficult for lots of people to find jobs; because of the large population, it is hard for China to supply energy and water to satisfy people’s daily needs; because of the large population, more cities are more crowded than before, and the traffic is much heavier; because of the large population, natural environments are becoming worse and worse.
To deal with the problem, our government has taken the one-child policy to control it. Thanks to the policy, so far, it has worked well in controlling the population. But it is still a serious problem, we have a long way to go.
one sixth
one ninth
one twentieth
five sixths
two ninths
seven twentieths
ATTENTION
one / a half
a quarter
three quarters
three and a half
past
now
so far
So far, I have read five English novels .
3b Write a short passage of three paragraphs based on 3a.
China has the largest population in the world. It has caused many problems. Everyone should do something to solve them.
First, the government should keep the one-child policy to control the increasing population, and practice the reform and opening-up to develop our economy. Only in this way can we get more jobs and improve our living conditions.
Second, the energy and water is becoming less and less. We’d better save them as much as possible, and try to find more new energy. In order to solve the problem of heavy traffic, we call on everyone to take a bus or walk as often as possible.