Unit 1 The Changing World Topic2 SectionC课件 +音视频(共46张PPT)

(共46张PPT)
Unit 1 The Changing World
Topic 2 The population in developing countries is growing faster.
Section C
一、掌握以下单词：social, supply, natural, worse, so far government, take
measures to do sth, thanks to sb/ sth等。
二、Key sentences：
⑴… and about one fifth of the people in the world live in China.
⑵…our government has taken many measures to control the population.
⑶Thanks to the policy, China is developing quickly and people’s living
conditions are improving rapidly.
三、强化练习现在完成时的用法。
四、谈论世界和中国人口问题。
Teaching aims
行业PPT模板http:///hangye/
The population in developing countries is larger than that in developed countries.
China has the largest population.
What problems does the largest population cause
It’s 7,898,236,143.
What’s the population of the world
What a large population!
What problems does the large population cause
行业PPT模板http:///hangye/
行业PPT模板http:///hangye/
not enough water and energy
Large population caused many social problems.
not enough water and energy
less living space
Large population caused many social problems.
行业PPT模板http:///hangye/
not enough water and energy
less living space
heavier traffic
Large population caused many social problems.
not enough water and energy
less living space
heavier traffic
worse enviroment
Large population caused many social problems.
行业PPT模板http:///hangye/
not enough water and energy
less living space
heavier traffic
worse enviroment
fewer job opportunities
Large population caused many social problems.
not enough water and energy
less living space
heavier traffic
worse enviroment
fewer job opportunities
Large population caused many social problems.
行业PPT模板http:///hangye/
Task1.Write the title of the passage.
Task2. 1b Read 1a and match the main idea with each paragraph.
1. _____ Paragraph 1 A. the better situation in China now
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
行业PPT模板http:///hangye/
In 2014, the world's population was about 7.2 billion. More than four billion people live in Asia now. That's more than half of the world's population.
the world’s and Asia’s population
In 2014, the world's population was about _____billion.
7.2
______________billion people live in Asia now.
That's almost _____ of the world's population.
More than four
half
Paragraph 1
Paragraph 2
China has a very large population, and about one fifth of the people in the world live in China. Because of the large population, there was less living space for each family. And what was worse, it was difficult for lots of people to find jobs. At the same time, the large population caused many other difficulties for the whole nation. For example, it was hard for China to supply water and energy to satisfy people's daily needs. Many cities are more crowded and the traffic is much heavier,too. The large population has been a serious problem.
行业PPT模板http:///hangye/
Paragraph 2 The problems caused by large population.
1 ／ 5*7.2 billion =1.44 billion
About one fifth of the people in the world live in China.
one
fifth
20 percent
Read and find what social problems has it caused
try to underline and number them.
1. Because of the large population, there is less living space for each family.（改为反义疑问句）
Details reading
行业PPT模板http:///hangye/
Read and find what social problems has it caused
2.Because of the large population, it is difficult for lots of people to find jobs.
行业PPT模板http:///hangye/
Read and find what social problems has it caused
3. Because of the large population,it is hard for China to supply water and energy to sastify people’s daily needs.
行业PPT模板http:///hangye/
4. Because of the large population,most cities are more crowded than before, and the traffic is much heavier.
Read and find what social problems has it caused
行业PPT模板http:///hangye/
Read and find what social problems has it caused
5. Because of the large population, natural environments are becoming worse and worse.
行业PPT模板http:///hangye/
Read Par.2 and fill in the blanks.
the problems caused by large population
Social problems less _____________
fewer _______ opportunities
less _______ and ______
crowded ________
heavy _________
job
water
cities
traffic
living space
energy
参考1c的表格
Paragraph 3
So far, our government has taken many measures to solve the problem. And they worked well. Thanks to the efforts of our government,China is developing quickly and people’s living conditions are improving rapidly. The natural environment is becoming better and better.Howeverwe still have a long way to go.
行业PPT模板http:///hangye/
Read Par.3 and mark T / F.
1. Our government has not taken any measures to control the population.
( )
2. China is developing quickly and people’s living conditions are
improving rapidly. ( )
3. The population problem is not serious in China. ( )
F
T
F
1c Read 1a again and complete the table.
Population of China ____________________
Social problem less ______________
fewer _______ opportunities
less _______ and ______
more crowded ________
heavier _________
Situation now Living conditions___________
The natural environment__________
1.36 billion
job
water energy
cities
traffic
are improving rapidly
living space
is becoming
better and better
行业PPT模板http:///hangye/
Listen to 1a and fill in the mind map
Population
Problems
population
problems
Situation now
the world's population:___________
Asia’s population:________________
Because of the large population,
1. There was _________________.
2. It was difficult _____________ .
3. It was hard to supply
_____________________
4. Many cities are____________.
5. The traffic is ____________ .
7.2 billion
More than 4 billion
less living space
to find jobs
energy and water
more crowded
much heavier
1. People’s living conditions are _________________.
2. The natural environment is becoming _____________ .
improving rapidly
better and better
Key phrases:
1. 社会问题
2.……的一半
3.……的五分之一
4.因为……
5.更少的生存空间给……
6.整个国家
7.供水供电
8.满足人们的日常需要
9.到目前为止（现在完成时的标志）
10.采取措施做某事
11.在做某事方面很有成效
12.幸亏；由于
13.感谢做某事
14.生活条件
15.自然环境
social problems
half of
one fifth of
because of+名词
the whole country
supply water and energy
satisfy people’s daily needs
take measures to do sth.
so far
less living space for…
thanks for doing sth.
living conditions
natural environment
work well in sth./doing sth.
thanks to
行业PPT模板http:///hangye/
1. 有很长的路要走
have a long way to go
Key phrases:
Key points
观察分数的表达:
one fifth
two fifths
China has a very large population, and about one fifth of the people in the world live in China.
行业PPT模板http:///hangye/
点拨:
1. 分子用_____数词, 分母用_______数词
2. 当分子_______1时,分母用_______数
3. 分数表达口诀：子基母序，子＞1，母加s.
基
序
大于
复
one sixth
one ninth
five sixths
two ninths
几个特殊的分数表达:
one / a half
a quarter
three quarters
three and a half
行业PPT模板http:///hangye/
分数 + of + 名词 /代词 + 谓语动词
谓语动词的单复数由名词/代词决定，与分数无关
名单则单
名复则复
Exercises
1.—What's one third and a half, do you know？
—Yes, it's _____.
A. one fifth B. two fifths C. six fifths D. five sixths
2.— Which is the smallest number of the four？
—_______.’
A. A half B. Two thirds C. A quarter D. Three fouths
3. Which is the smallest number, a half, a quarter or___ _____(三分之二)
4.We all know forty-five minutes is three___________(刻).
D
C
two thirds
quarters
行业PPT模板http:///hangye/
2. (1) because 与 because of
because 是连词，+ 句子。（常回答以why 开头的问句）.
because of 是复合介词， + 名词/代词/v-ing.
eg.
We didn’t go to the zoo ___________ the heavy rain last Sunday.
We didn’t go to the zoo ___________ it rained last Sunday.
(2) thanks to 与 thanks for （to 和for 都是介词）
thanks to “多亏了/由于” . 指因为......而产生好的结果。
thanks for “因（做）某事而感谢某人”（只表达感谢，不补充结果）。
say thanks to 向...道谢
eg.
_____________ the policeman, Lily found her lost sister at last.
_____________ your help. = ________________ helping me.
because of
because
Thanks to
Thanks for
Thanks for
行业PPT模板http:///hangye/
及时练习2a
1. ____________ he is ill, he is absent today.
2. _____________ your help, I finished the task on time.
3. He can’t come _______________ the heavy rain.
4. ______________ listening to my questions and giving me
your advice, Lily.
Because
Thanks to
because of
Thanks for
3. all 与 whole
all与whole 都表示“整个；全部的”
all 可以修饰任何名词,限定词放在all 之后, all + 冠词（限定词）+ 名词
whole 只修饰具有整体意义的单数名词, 限定词在whole 之后。
冠词（限定词）+ whole + 名词
eg. all the life = the whole life all my life = my whole life
all the morning = the whole morning
a whole roast duck
练习： all my books = ___________ books
all the country = ____________ country
We have to go to school for a ________ week after the holiday!
A. whole B. all C. my D. this
my whole
the whole
A
行业PPT模板http:///hangye/
4.supply n. 供应量，供给量，储备
e.g. The water supply is not enough. 水的供给不足。
v.（尤其大量）供应，供给，提供，
常用句型：supply sth. to sb./supply sb. with sth.
eg. Our country supplies free textbooks to children.
= Our country supplies children with free textbooks.
行业PPT模板http:///hangye/
provide, offer与supply意思相近，但用法不同。
比较：provide sth. for sb./provide sb. with sth.
offer sth. to sb./offer sb. sth.
worse and worse 越来越糟糕
比较级+and+比较级 意为“越来越……”
e.g.The weather is getting colder and colder.天气变得越来越冷了。
Our school is becoming more and more beautiful.
行业PPT模板http:///hangye/
5. (1) so far 现在完成时的标志。
eg. Half of the sheep on the farm _______ so far.
A. has died B. have been died C. died D. have died
(2) take measures to do sth.采取措施做某事
eg. Chinese government must take measures ________ (protect)
the environment.
(3）work well in (doing) sth. 在某方面成效显著。
eg. This new kind of medicine works well in __________ (control)
the bird flu.
D
to protect
controlling
行业PPT模板http:///hangye/
5. (4) be known/famous as + 身份，地位，职业 （作为......而出名）
be known/famous for + 特点，特长 （因为......而出名）
be known/famous to + 某人（被......熟知）
eg.
Guilin is known _______ its beautiful mountains and rivers.
Chairman Mao is famous _______ every Chinese.
Xue Zhiqian is known ______ a singer.
Kunming is known ________ its enjoyable weather ______ “Spring City”.
A. as; for B. to; as C. for; to D. for; as
for
to
as
D
及时练习3
1. Yao Ming ________________ most young people.
2. He ___________________ a great inventor.
3. France ____________________ his fine food and wine.
is famous to
is famous as
is known for
行业PPT模板http:///hangye/
6. deal with 与 do with “处理，对付”
how to deal with “如何处理.......”
= what to do with “如何处理.......”
eg.
1. I don’t know _______ .
A. how they do with the problem
B. what do they do with the problem
C. how they will deal with the problem
D. what they will deal with
2. I don’t know how to deal with these problems.（改为同义句）
I don’t konw _______ to ______ with these problems.
C
what do
行业PPT模板http:///hangye/
2 Complete the following passage with the correct forms of the given words or phrases.
grow reach have find work become face carry out
Every minute, about 261 babies are born in the world. That means people have to _____ food for about 375 940 newborn babies every day. The world’s population _______________ faster and faster. It has _______ one of the biggest social problems today.
China ______ the largest population in the world. There are about 1.3 billion people in China. It has ________ 20 percent of the world’s population. China has ____________ some policies to control the population, and these policies have _______ well. But China still _______ a serious population problem.
find
grows/ is growing
become
has
reached
carried out
worked
faces
行业PPT模板http:///hangye/
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
行业PPT模板http:///hangye/
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 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.
行业PPT模板http:///hangye/
Summary:
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.
1. Read the fractions in English.
2. Talk about population problems.
We learn:
We can:
感谢观看