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 ( http: / / www.21cnjy.com )1 Topic 2 Section C编写的教学课件, 这是第一单元第二话题的第三课时。本课的主要内容是一篇关于中国人口问题的文章，本课件设置了读前讨论、泛读获取大意、细读完成表格、分段理解文章的活动。这些活动对培养学生良好的阅读策略有很好的作用。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是1a，因此对教学设计作如下安排：
Getting students ready for learning:
用绕口令的方式复习数字的读法。(幻灯片2)
Pre-reading:
从世界人口问题过渡到中国的人口问题，引入新课，完成1a的读前讨论题。 (幻灯片3)
While-reading:
①阅读1a，给文章写出标题。(幻灯片4)
②阅读1a，完成1b，获取每段的大意。(幻灯片4)
③阅读1a，完成1c。(幻灯片5)
④进行分段式阅读，教师呈现第一段的大意，暗示学生在段落大意的指引下理解文段。然后让学生细读第一段，完成练习。(幻灯片6、7)
⑤阅读第二段，完成对应的练习。（点 ( http: / / www.21cnjy.com )击幻灯片8中的“one fifth”可链接到幻灯片23、24，学习分数的表达法。）(幻灯片8—13和幻灯片23、24)
⑥阅读第三段，理解其含义。（点击幻灯片14中的“so far”可链接到幻灯片25，学习so far的用法。）(幻灯片14、25)
⑦播放1a录音，注意模仿其语音语调。(幻灯片14)
Post-reading:
①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15)
②完成2。(幻灯片16)
③分组讨论，完成3a。(幻灯片17)
④根据3a的讨论，写一篇短文，完成3b。可呈现范文，供学生完成写作后进行自我评价和同伴互评提供参考。(幻灯片18)
Practice:
完成练习题。(幻灯片19)
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20)
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21)(共25张PPT)
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The population in developing countries is ________ than that in developed countries.
Which country has the largest population
What’s the population of China
larger
1a 1. Before you read the passage, discuss the
questions with your partner.
1) Why does China carry out the one-child policy
2) What social problems do you think China’s large
population has caused
1a Read and understand.
2. Write the title of the passage.
1b Read 1a and match the main idea with each paragraph.
1. _____ Paragraph 1 A. the measures to deal with the
problems
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
1c Read 1a again and complete the table.
Population of China ____________________
Social problem less ______________
fewer _______ opportunities
less _______ and ______
crowded ________
heavy _________
________ natural environments
Government measure _____________________
1.3 billion
job
energy
water
cities
traffic
worse
the one-child policy
living space
Asia has a population of _____________. That’s to say, almost ______ of the people in the world live in Asia now.
more than 3 billion
half
Paragraph 1
The world’s and Asia’s population.
3 billion÷ 6.8 billion≈1／2
(half)
50 percent (50%)
Almost half of the people in the world live in Asia.
1.3 billion÷6.8 billion≈1 ／ 5
20 percent (20%)
About one fifth of the people in the world live in China.
one
What social problems has it caused
Paragraph 2
The problems caused by large population.
fifth
Because of the large population,
there is __________________ for each family.
less living space
Because of the large population,
it is difficult for lots of people ______________.
to find jobs
Because of the large population,
it is hard for China to supply _______ and ______ to satisfy people’s daily needs.
energy water
Because of the large population,
most cities are ______________ than before, and the traffic is much __________.
more crowded
heavier
Because of the large population,
natural environments are becoming _______
_____________.
worse
and worse
The one-child policy
— Every couple can have only one child.
So far, the one-child policy has worked well in
controlling China’s population.
We still have a long way to go.
Paragraph 3
The measures to deal with the problems.
1a Listen，look and say.
Every minute, about 261 babies are born in the world. That means people have to _____ food for about 375 840 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.
2 Complete the following passage with the correct forms
of the given words or phrases.
find
grows/ is growing
become
carried out
reached
grow reach have find work become face carry out
has
worked
faces
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
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 the 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.
Choose the best answer.
1. _____ of the students are boys in our school.
A. Two third B. Two threes
C. Two thirds D. Second three
2. The one-child policy has _____ controlling China’s
population.
A. been good at B. done well in
C. taken care of D. worked well in
3. Edison is known _____ a great inventor.
A. for B. as C. in D. on
4 ._____ your help, I made great progress in math.
A. Thanks for B. Thanks to
C. Thank to D. Thank for
C
D
B
B
1. Read the fractions in English.
2. Talk about population problems.
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.
Homework
2. Write the composition
in 3b.
1. Read 1a aloud.
3. Finish Section C in
your workbook.
4. Preview Section D.
one sixth
one ninth
one twentieth
five sixths
two ninths
seven twentieths
ATTENTION
one / a half
a quarter
three quarters
three and a half
past
now
so far
So far, I have read five English novels .
