Unit 1 The Changing World Topic 1 Our country has developed rapidly. Section C 课件 33张PPT

Unit 1 The Changing World
Topic 1 Our country has developed rapidly.
SectionC
Remember to give yourself a smiling face every day.
First, try to separate the number in groups of three from right to left.
Then read it in order from billion to million and thousand.
How to read numbers?
1 , 0 0 0 , 0 0 0 , 0 0 0
billion
million
thousand
1 0 0 0 0 0 0 0 0 0
Review
Review
A：What’s the population of…？
B：It’s…
(Ask and answer in pairs)
4 billion÷ 7.2 billion≈1／2
(half)
50 percent (50%)
Almost half of the people in the world live in Asia.
Before-reading
[p?'sent]
1.37 billion÷7.2 billion≈1 ／ 5
20 percent (20%)
About one fifth of the people in the world
live in China.
one
fifth
Before-reading
人口:21707000
人口:80293000
The population in Beijing is a quarter of that in Jiangsu .
one
fourth
a quarter
Before-reading
25 percent (25%)
21million÷ 80 million ≈ 1 ／ 4
(49+47+48) ÷ 390 ≈ 3 ／ 8


three
eighths
37.5 percent (37.5%)
Three eighths of the students in Grade9 are in
Class3,4&5.
Before-reading
Make a summary
How to express fractions in English.
子基母序，分子大于1，分母加s
one sixth
one ninth
one twentieth
five sixths
two ninths
seven twentieths
Before-reading( Have a try)
one / a half
a quarter
three quarters
three and a half
Before-reading( Have a try)
The large population brings us a lot of social problems.
[?s???l]
Before-reading
Before-reading
It is difficult for China to supply energy and water to satisfy people’s daily needs.
[s??pla?]
supply energy
supply water
[s??pla?]
Before-reading
Natural environments are becoming worse and worse.
[?n?t?r?l]
natural environment
past
now
so far
So far ,our government has taken some measures to control the population.
Before-reading
One is known as the one-child policy. It worked well in controlling China’s population.
Before-reading
Make a summary
Before-reading
China has the largest population in the world.About one fifth of the people in the world live in China.The large population brings us a lot of social problems.It is difficult for China to supply energy and water to satisfy people’s daily needs.Natural environments are becoming worse and worse.So far ,our government has taken some measures to control the population. One is known as the one-child policy. It worked well in controlling China’s population.
Read and find out the main idea of 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
Para 1 ___________
Para 2 ___________
Para 3 ___________
B
C
A
While-reading
While-reading
The title of this passage:
_______________________________
Population Problems and the Measures
While-reading ( Para.1)
population in 2015
the world’s population
the Asia’s population
7.2billion
4 million
How many population problems does the writer refer to?
While-reading ( Para.2)
Population problems
population problems
living space
less
job
difficult
traffic
crowded

hard
…
water and energy
natural environment
worse
…
…
While-reading ( Para.2)
the government’s measures
the one-child policy
work well in

…
…
…
the two-child policy
balance population development
While-reading ( Para.3)
Suppose you are a reporter in our school. Our headmaster invite you to make a report on your ways of solving population problems as a student.
Post-reading
Beginning:
Body:
Ending:
Talk about what the population is in China.
Choose some population prolems in Para.2 and talk about the ways of solving them.
参考词汇：save ，turn off, instead of
Show time
Post-reading
summary
We learn:
1. Read the fractions in English.
2. Talk about population problems.
We can:
1. Some words:
social, supply, natural, worse, government,
paragraph, opportunity, percent,
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.
Continue to write your report about the ways of solving population problems.
Memorize the useful expressions and key sentences that we learn today.
Finish Section C in your workbook.
Preview Section D.
Assignment
The population in developing countries is larger than that in developed countries.
Review
Many hands make light work.
人多力量大、众人拾柴火焰高。
What will a large population bring to us?
Preparing
a large population
There will be more talent people.
You have more chances to make money.
There will be enough labour force.
population
telephone
television
computer
…
camera
traffic
food
living conditions
find job
Preparing
Every coin has two sides. A large population can also cause social problems
a larger population
China has the largest population in the world.
About one fifth of the people in the world live in
China.
The large population brings us a lot of social problems.
Before-reading
[?s???l]
Discuss and state(陈述) your reasons according to Thinking Map about population problems and measures.