(共23张PPT)
Better not to ignore the past but learn from it instead. Otherwise, history has a way of repeating itself.
最好不要忽略过去，而是从中得到些教训，否则 历史会不断重复上演。
Miss Li：同样的错误，第一次犯是无知，第二次犯是愚蠢，第三次就不可原谅了。错误是生活的一部分，而生活也教会我们不要再犯同一个错误。
学习目标
1.Go on learning the present perfect tense
﹙继续学习现在完成时﹚.
2.Learn how to express big numbers in English.
﹙学习怎样用英语表达大的数字﹚
﹙﹚
3.Talk about the population in different countries.（谈论不同国家的人口）
4.学习so引导的半倒装句。
one hundred and fifty yuan
thousands of people
two point two six (2.26) meters tall
two thousand and eight Olympic Games
1,000,000,000
one billion
1,000,000
one million
1,000
one thousand
3.14
three point one four
100
one hundred
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
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
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
973
nine hundred and seventy-three
3 980
three thousand , nine hundred and eighty
98 721
ninety-eight thousand , seven hundred and twenty-one
768 540
seven hundred and sixty-eight thousand , five hundred and forty
1 , 0 0 0 , 0 0 0 , 0 0 0
billion
million
thousand
2 346 780
two million, three hundred and forty-six thousand, seven hundred and eighty
82 346 580
eighty-two million, three hundred and forty-six thousand, five hundred and eighty
405 000 000
four hundred and five million
5 555 555 555
five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-five
1 , 0 0 0 , 0 0 0 , 0 0 0
billon
million
thousand
6800
80
80
80
The population is increasing by 80 million every year.
= The world has a population of 6.8 billion.
What a large population!
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.
1b Listen to 1a and match the information.
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
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
1a Listen，look and say.
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 1.1 billion. The population in developing countries is ______ and is growing ________ than that in developed countries. Luckily, our country has carried out the ___________ policy to control the population.
80 million
China
1.3 billion
second
larger
faster
one-child
The supermarket is very crowded.
So it is.
So +主语+ be/情态动词/助动词
Lucy dances very well.
She has cleaned the room.
So she does.
So she has.
So it is.
确实如此。
e.g. The population of this city is nearly
300 000. 这个城市的人口将近三十万。
e.g. 80% of the population in China are
farmers. 中国百分之八十的人口是农民。
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。
强调人口的具体分布或构成 (作复数）
BACK
population
集合名词 某地整体人口的数量(作单数）
通常用large/ big/ small 来修饰。
increase by + 数字 / 倍数 / 百分数 增加了……
e.g. The price of the house has increased
by three times.
increase to +数字 增加到……
e.g. The price of the house has increased
to 500 000.
250
250
250
250
250
250
500
BACK
A：What a large population ! The world … 6.8 billion.
… 80 million every year.
B：Which country …
A：China … reach…,
and India …with ….
B：… the USA
A：309 million.
B：It shows … developing countries … developed countries.
A：…is growing faster …
B：So it is. The population problem … developing countries
A：China … carry out … control the 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
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.
Homework
2. Read the numbers in
Part 2 on P12.
1. Read 1a aloud.
3. Finish Section B in
your workbook.
4. Preview Section C.
