课件21张PPT。Section BUnit 1 The Changing WorldTopic 2 The population in developing countries is growing faster.numbers in our livesone hundred and fifty yuanthousands of peopletwo point two six (2.26) meters tall two thousand and eight Olympic Games1,000,000,000
one billion1,000,000
one million
1,000
one thousand3.14
three point one four100
one hundred Look,read and learnFirst, 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 0 2 Listen and read the numbers, paying special attention to the intonation. Then read the other numbers with your partner.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 two973
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 forty2 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 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.1. the world 2. China 3. India 4. the USAA. 309 million B. 6.8 billion C. 1.3 billion D. 1.1 billionMake 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 USAA. 309 million B. 6.8 billion C. 1.3 billion D. 1.1 billion1c 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-child1a Listen，look and say.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. Language points确实如此。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.Act out the dialog3 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.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. lessCDDAExercisessummaryWe 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.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） BACKpopulation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. 250250250250250250500BACK课件内容介绍和使用说明
本课件是为仁爱英语九年级上册Unit 1 Topic 2 Section B编写的教学课件, 这是第一单元第二话题的第二课时。本课通过Kangkang和Maria谈论人口问题的对话，让学生学会英语中数字的表达法，初步了解世界各国的人口数量和基本状况。在对话中学习相关的单词和短语，同时引导学生思考人口众多所带来的一系列问题。为更好更有效地实现本课教学目标，本课件从学生实际出发，对教材进行了必要的整合，教学设计直观生动。基于本节课主要活动有2个，1a和2，因此对教学设计作如下安排：
Getting students ready for learning:
用生活中常见的数字来引入新课，进行数字的复习。(幻灯片2)
Pre-listening:
①学习数字的英语表达法。播放2的录音，让学生边听边读，注意模仿语音语调，(幻灯片3-7)
②展示图片，谈论人口问题，引入本课的话题。（点击population可链接到幻灯片20，点击increasing by可链接到幻灯片21。） (幻灯片8、20、21)
While-listening:
听1a录音，完成1b。教师在核对答案后，让学生进行对话练习，巩固之前的学习。(幻灯片9、10)
Post-listening:
①阅读1a，完成1c。(幻灯片11)
②播放1a动画，让学生边听边看动画，进一步理解1a对话内容，注意模仿语音语调。(幻灯片12)
③讲解1a中的语言点。(幻灯片13)
④根据关键词提示，学生表演1a对话。(幻灯片14)
⑤分组讨论，完成3，教师引导学生思考人口众多带来的问题，为下一课的学习做好准备。(幻灯片15)
Practice:
完成练习题。(幻灯片16)
Assigning homework:
①总结本堂课的新单词、短语和语法项目，让学生能把握整堂课的重点。(幻灯片17)
②设计了书面显性作业及课文朗读、对话练习、预习新课等隐性作业。(幻灯片18)
