Unit 1 Topic 2 The population in developing countries is growing faster.SectionB课件（20张PPT）

课件20张PPT。Unit 1 The Changing World
Topic 2 The population in developing countries is growing faster
Section B
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 0billionmillionthousand1 0 0 0 0 0 0 0 0 0Choose a candy!Wow, a real one!6 004 001Read the number!
7 198 764 502Read the number!7.5 billionRead the number!6800808080The population is increasing by 80 million every year.= The world has a population of 6.8 billion.What a large population!1b Listen to 1a and match the information.Make similar conversations after the example.Example:
A.: What’s the population of the world?
B: It’s about 6.8 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 1.1 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 millionChina1.3 billionsecondlargerfasterone-childLanguage pointsThe 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 nearly
300 000. 这个城市的人口将近三十万。
e.g. 80% of the population in China farmers. 中国百分之八十的人口是农民。 e.g. The population of China is very . 中国人口众多。
The population in this area is becoming and
. 这个地区的人口越来越少。表示部分人口（作复数） BACKpopulation表示整体人口（作单数） 通常用large/ big/ small 来修饰。 largesmallersmallerareisincrease 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. 250250250250250250500BACKIn fact, China is carrying out the two-child policy to solve the problems caused by the aging (老龄化) population. Would you like your parents to have a second child? Why or why not? DiscussionOur report:
In our group, XXX said yes because ________. XXX said no because ________. XXX wants a younger brother because ________. As for me, I _________.Show TimesummaryWe learn:1. Read numbers in English.
2. Talk about population problems.We can: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. Homework2. Read the numbers in
Part 2 on P12.1. Read 1a aloud.3. Finish Section B in
your workbook.4. Preview Section C.Thank you.