Unit 1 The Changing World Topic 2 The population in developing countries is growing faster. Section

(共20张PPT)
Unit 1 The Changing World
Topic 2 The population in developing countries is growing faster.
Section B
Language goals
By the end of the class, you will be able to
1.Master the following words ,phrases and sentences:
Words： population, billion, increase, reach, luckily, policy, Russia, measure
Phrases: increase by, developing countries, developed countries, carry out,
the one-child policy
Sentences：①What a large population!
②The world has a population of 6.8 billion. ③ So it is.
2. Read numbers in English.
3. Talk about population problems.
1.给某人打电话
2.在家
3.再也不...
4.走失，迷路
5.我也是
6.讨厌做某事
7. 太多的人
8. 去看电影
9. 去散步
call sb. / call sb. up/ring sb (up)/make a telephone call to sb
be in / at home
not... any more/ no more
get lost /lose one's way
So do I.
hate to do sth. / hate doing sth.
Revision in class
too many people
go to the cinema/ see a film/go to the movies
have/take a walk
Revision
1. So + be/情态动词/助动词+主语 （表肯定）
（表示上文提到的肯定情况也同样适合另外一个人或物，前后主语不是同一个人或物）
Neither / Nor + be/情态动词/助动词+主语（表否定）
注：neither/nor句型中没有not出现。
（表示上文提到的否定情况也同样适合另外一个人或物）
▲ So +主语+ be/情态动词/助动词 （表示对前面事实的肯定，前后主语是同一个人或物,意思是“的确如此”）
2. already意思是“已经”，通常用于肯定句中 。
yet可用于否定句，“还” ；也可以用于疑问句，译为“已经”
just只用于肯定句意思是“刚才”
never用于否定句译为“从不”
ever用于疑问句译为“曾经”
选用所给单词或词组填空
already, yet, ever, never, have been to, have gone to
1. Tom has _______________finished his homework. Now he is playing football onthe playground.
2 . Have you __________ been to the Great Wall
3 . She hasn't come back _______________.
4. I have ____________heard of that before. It is so strange.
5.Has he kept the book _______________
6.-Have you seen the film ---Yes. I have __________________seen it.
7.__________ you ever _______________Hainan
8. Mr. Wang isn't here. He ________________Shanghai.
Revision
just/ already
ever
yet
never
yet
just/ already
Have
been to
has gone to
1b. Listen to 1a and match the information.
1. the world 2. China 3. India 4. the USA
A. 323 million B. 7.2 billion C. 1.36 billion D. 1.27 billion
Make similar conversations after the example.
Example:
A.: What’s the population of the world
B: It’s about 6.8 billion.
1. the world 2. China 3. India 4. the USA
A. 309 million B. 6.8 billion C. 1.3 billion D. 1.1 billion
1c. Read 1a and fill in the blanks.
The world has a population of 6.8 billion and it is increasing by __________ every year. _______ has the largest population. It has already reached __________ and India is _________ with 1.31 billion. The population in developing countries is ______ and is growing ________ than that in developed countries. Luckily, our country has carried out some policies to __________the problem.
90 million
China
1.37 billion
second
larger
faster
solve
Language points
1. a report on--- 一篇关于…的报道
on意为“关于”， 和about同义
read a report on/about …. 读一篇关于….的报告
give a report on/about …做一篇关于…的报告
2. in the newspaper 在报纸上
3. population(人口) 作主语时，谓语动词用单数；若population 与分数，百分数连用时，谓语动词用复数.
e.g. The population of this city is nearly 300 000. 这个城市的人口将近三十万。
80% of the population in China are farmers. 中国百分之八十的人口是农民。
注意：1) 通常用large/ big/ small 来修饰表示人口的多少。
e.g. 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。
Language points
2) 表示"某地有多少人口"的常用句型:
某地+has a population of +数词 = The population of +某地+be+数词
eg. The USA has a population of 309 million. 美国有3.09亿人口。
=The population of the USA is 309 million.
3) 提问“人口有多少”: what is the population of---？ =How large/How big is the population of ---？ = How many people are there in + 地名？
eg. There are 1.4 billion people in China. （对划线部分提问）
________ the ___________ of China
= ______ ________ is the ___________ of China
= ______ _______ people are there in China
4. It says (that) + 内容 ---上面写到---
5. increase v. (使)增加，（使)增大，增多。 increase by + 数字 / 倍数 / 百分数 增加了…… increase to +数字 增加到……
What’s population
How large/big population
How
many
Language points
eg. The price of the house has increased by three times.
The price of the house has increased to 500 000.
6. reach + 数字 达到多少
reach +地方 =get to… =arrive in/at… 到达什么地方
7. 在比较级的句子中，that 通常代替上文中出现过的单数名词或不可数名词，those代替复数名词。
eg. 1. I think the bread in Qinyuan is more dilicious than _______ in Haolilai.
2. The shoes in this shop are cheaper than _______ in that one.
3. The weather in Xingyi is better than _____ in Anshun.
8. develop v.发展 developing adj. 发展中的 developed adj. 发达的
development n.发展 with the development of--- 随着---的发展
a developed country 发达国家
a developing country 发展中国家
that
those
that
Language points
9. so+主语+/be/情态动词/助动词 “......的确如此”，主语与上文指同一人或物
eg. 1. ---It was cold yesterday.
---So it was.
2. ----How fast she runs!
---- So she does.
10. carry out 实行，进行，执行。(carry it/them out)
eg. This is a new policy, and they will carry it out next year.
1,000,000,000
one billion
1,000,000
one million
1,000
one thousand
3.14
three point one four
100
one hundred
look， read and learn
543.7
five hundred and forty-three point seven
1 562
one thousand, five hundred and sixty-two
6 004 001
six million, four thousand and one
7 198 764 502
seven billion, one hundred and ninety-eight million, seven hundred and sixty-four thousand, five hundred and two
2 Listen and read the numbers, paying special attention to the intonation. Then read the other numbers with your partner.
1 , 0 0 0 , 0 0 0 , 0 0 0
billion
million
thousand
973
3 980
98 721
768 540
2 346 780
82 346 580
405 000 000
5 555 555 555
1 , 0 0 0 , 0 0 0 , 0 0 0
billion
million
thousand
nine hundred and seventy-three
three thousand , nine hundred and eighty
ninety-eight thousand , seven hundred and twenty-one
five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-five
four hundred and five million
eighty-two million, three hundred and forty-six thousand, five hundred and eighty
two million, three hundred and forty-six thousand, seven hundred and eighty
seven hundred and sixty-eight thousand , five hundred and forty
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
2. What can you tell from the population in
developing countries and in developed countries
3. What problems does the large population cause
4. What measures do you think should be taken to
control the population
China has the largest population. The population of China is 1.3 billion. Canada has the smallest population. The population of Canada is 34 million.
The population in developing countries is larger
than that in developed countries.
The large population may cause less living space,
more pollution and so on.
1. ______ the population of Guizhou Province
A. What’s B. What number is C. How much is D. How many are
2. China has a ______ population and long history.
A. many B. large C. much D. small
3. China has a much _______ population than _____.
A. larger; Russia B. more; Russia C. larger; that of Russia D. more; that of Russia
4. There are ______ students in our school.
A. three thousands B. three thousands of C. three thousand of D. three thousand
5. Beijing has improved a lot these years.____ and ____.
A. So has it; so has Shanghai B. So has it; so Shanghai has
C. So it has; so Shanghai has D. So it has; so has Shanghai
6. The population of China is _________ than that of Japan.
A. larger B. more C. fewer D. less
7.—Have your parents been to Russia —Yes. So ________ I.
A.do B.have been C.did D.have
8.The population of Shanghai is larger than _____ of Shenyang.
A.that B.it C.one D.this
9.—_____ the population of the U.S.A. in 2005 —It _____ about 296 million.
A.What is; is B.What was; was C.How many is; was D.How many was; is
10. We must ______ the policy to control the heavy traffic in the city.
A. carry out B. take out C. bring out D. look out
11.The price of the rice has _____ 20％.
A. increase by B. increase to C. increased by D. increased to
A
A
B
C
D
D
A
D
A
B
A
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 7.2 billion.
So it is.
Summary
We learn
We can
Homework
1. Read 1a aloud & Learn the new words by heart.
2. Read the numbers in Part 2 on P12.
3. Finish Section B in your workbook.
4. Preview Section C.