(共27张PPT)
Unit 1 The Changing World
Topic 2
The population in developing countries is growing faster.
Section B
能听懂高位数字，并作出正确判断。
能通过整合对话内容，提升综合语言运用能力。
Skill aims
学生能掌握本课的重点词汇和短语，复习形容词比较级的用法，继续学习数字表达。
Knowledge aims
增强学生对人口问题的认识，了解各国的人口现状。
增强学生关注社会的意识。
Emotional aims
Teaching aims
Emotional aims
通过对比发达国家和发展中国家的人口增长情况，引导学生树立正确的人口观念。
Culture awareness
Warming up
Numbers in our lives
one hundred and fifty yuan
two thousand and twenty-four
Olympic Games
ten past eleven
thousands of people
eight years old
Do you know the population of the world
Pre-listening
今日头条
population [ p pj le n]n.人口
billion ['b lj n] num．十亿
increase[ n'kri s]v.(使)增加
Russia [ r ] n.俄罗斯
reach [ri t ] v.实现；达到
luckily ['l k li]adv .幸运地
measure[ me ]n.措施，方法
The world has a population of 7.2 billion in 2014. And it is increasing by 82 million every year. Russia has reached 143 million. Luckily, it has taken some measures to solve the problem.
It is increasing by 82 million every year.
82 000 000
,
,
增加了，增长了
1,000
one thousand
1,000,000,000
one billion
1,000,000
one million
3.14
three point one four
100
one hundred
How to read numbers
2 Listen and read the numbers.
nine hundred and seventy-three
three thousand , nine hundred and eighty
ninety-eight thousand , seven hundred
and twenty-one
seven hundred and sixty-eight
thousand , five hundred and forty
6 , 6 6 6 , 6 6 6 , 6 6 6
billion
million
thousand
973
3 980
98 721
768 540
6 , 6 6 6 , 6 6 6 , 6 6 6
billion
million
thousand
two million, three hundred and forty-six
thousand, seven hundred and eighty
eighty-two million, three hundred and
sixty-four thousand, five hundred and eighty
four hundred and five million
five billion, five hundred and fifty-five
million, five hundred and fifty-five
thousand, five hundred and fifty-five
2 346 780
82 364 580
405 000 000
5 555 555 555
Look , guess and listen.
What are they talking about
Are they talking about the population of the world or Asia
Let’s listen.
While-listening
Listen to 1a and match the information.
1. the world 2. China 3. India 4. the USA
A. 323 million B. 7.2 billion(2014) C. 1.36 billion D. 1.27 billion
What: Present situation (现状) How (the way to solve)
The world has a population of 1.________ in 2014. It is increasing by 2. _________ every year. There will be more pollution and other 3. ________________. We should find new ways to protect the
4. _____________, for example, making new rules and 5._________.
serious problems
82 million
1. 听前审题，2. 听中速记，3. 听后整理，检验！
Listen to 1a again, then finish the table. 听录音，完成表格。
7.2 billion
environment
policies
Listen, watch and repeat the dialogue .
Pair work: Read the dialogue in pairs.
1c Read 1a and fill in the blanks.
The world has a population of 7.2 billion in 2014 and it is increasing by _____________ every year. ________ population has already reached ____________ and India has ____________ of 1.27 billion. As the population ___________, there will be more pollution and other serious problems. We should find new ways to ________ the environment, for example, making new rules and policies.
82 million
China’s
1.36 billion
a population
increases
protect
(Kangkang is reading a report on population in the newspaper.)
Maria: Hi, Kangkang, what are you reading
Kangkang: I’m reading a report about world population.
Maria: What does it say
Kangkang: It says the world has a population of 7.2 billion in 2014.
And it is increasing by 82 million every year.
Maria: Mmm, that's really a lot.
Kangkang: Yes. China’s population has already reached 1.36 billion, and India
has a population of 1.27 billion.
Maria: What’s the population of the USA
Kangkang: 323 million.
have a population of...:有...人口
increase by...:增加了
已经达到
△问人口：What’s the population of ...
Maria: Oh, I see. What else does it say
Kangkang: It also says that as the population increases, there will be more
pollution and other serious problems.
Maria: So, what should we do with the problems
Kangkang: There are a lot of things we should do. We should find new ways to
protect the environment, for example, making new rules and policies.
Maria: That’s great! Only by working together can we create a better future.
(Data from: UN, Worldometer and National Bureau of Statistics, 2014)
随着人口的增长
处理，解决
制定新的规则和政策
只有通过合作，我们才能创造更好的未来。
（以“only+状语”开头的句子要使用倒装语序，也就是be动词、助动词和情态动词放在主语前面 ）
1.72亿人口
2.增加了八千两百万
3.美国的人口
4.处理，解决
5.保护环境
6.创造更好的未来
a population of 7.2 billion
increase by 82 million
the population of the USA
do with
protect the environment
create a better future
Language points
例：The population of this city is nearly 300 000.
这个城市的人口将近三十万。
例：The population of China is very large. 中国人口众多。
The population in this area is becoming smaller and smaller. 这个地区的人口越来越少。
强调人口的具体分布或构成 (作复数）
集合名词 某地整体人口的数量(作单数）
1. population通常用large/ big/ small 来修饰。
例：80% of the population in China are farmers.
中国百分之八十的人口是农民。
常用句式：
What’s the population of...
意为“……人口是多少？”
It is …
例：What's the population of China
中国人口是多少？
例： China has a population of 1.3 billion.
中国有13亿人口。
2. increase by 增加了，增长了
例: 石油(oil)的价格增长了2%。
The price of oil increased by 2%.
increase by 增加了……
increase to 增加到……
increase by + 数字 / 倍数 / 百分数
例：The price of the house has increased by three times.
increase to +数字
例：The price of the house has increased to 500 000.
250
250
250
250
250
250
500
Post-listening
3. Work in groups and discuss the population of the world. The following chart and questions may help you.
1. Which of these 5 countries has the largest/smallest population What’s the population of it
China has the largest population. The population of China is 1.36 billion. Canada has the smallest population. The population of Canada is 36 million.
What a large population!
Post-listening
3. Work in groups and discuss the population of the world. The following chart and questions may help you.
What a large population!
2. What problems does the large population cause
The large population may cause less living space, more pollution and so on.
Post-listening
3. Work in groups and discuss the population of the world. The following chart and questions may help you.
3. What measures do you think should be taken to solve the population problem
take measures to do sth.采取措施做某事
China has already carried out the two-child policy(二孩政策) to solve the problems caused by the aging (老龄化) population for several years, but it is not enough. So China has carried out the three-child policy(三孩政策) to solve the population problems.
What a large population!
Choose the best answer.
1. — ______ is the population of Russia — 143 million.
A. How much B. How many C. What D. How
2. There are ______ students in our school.
A. three thousands B. three thousands of
C. three thousand of D. three thousand
3. — Jenny always helps others. — ______.
A. So is she B. So she is C. So does she D. So she does
4. The population of China is ______ than that of Japan.
A. larger B. more C. fewer D. less
C
D
D
A
Exercises
1. Read numbers in English.
2. Talk about population problems.
1. Some words:
population, billion, increase, reach, luckily, policy, Russia, measure
2. Some phrases:
increase by, developing countries, developed countries, carry out, the one-child policy
3. Some sentences:
What a large population!
The world has a population of 6.8 billion.
So it is.
We learn
We can
Summary
3. Preview Section C.
1. Read 1a aloud.
2. Finish Section B in your workbook.
Homework
Thank you!
教学反思
