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1、,Unit 1 The Changing World,Topic 2 The population in developing countries is growing faster.,Section C,城北学校,留住蓝色地球,8,88,888,8,888,88,888,888,888,8,888,888,88,888,888,888,888,888,8,888,888,888,88,888,888,888,888,888,888,888,Tongue twister,The population in developing countries is _ than that in devel
2、oped countries.Which country has the largest population?Whats 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 Chinas large population has caused?,预习导纲,阅读短文，在文
3、中找到并写出下面的短语：1.三十多亿人口_2.几乎世界人口的一半_3.大约五分之一的人_4.更少的生活空间_5.带来很多其它的困难_6.整个国家(民族)_7.提供能源和水_8.更加拥挤_9.到目前为止_10.采取很多措施_11.控制人口数量_12.be known as_13.work well in doing _14.多亏了这个政策_15.一条很长的路要走_,读和翻译下列句子，注意观察划线部分，然后进行探究：,一.Thats almost half of the worlds population._ and about one fifth of the people in the wor
4、ld live in China._探究：one fifth 五分之一，half 二分之一分数表达口诀：分子_，分母_，分子大于一，分母用_试一试：1/2_1/3_ 2/3_ 3/4_特殊情况：(a)half_ a quarter_拓展：几分之几的:分数+of the+名词。当做主语时，单复数由名词来决定。练习：a.Two fifths of the students _(be)from Europe.b.Two fifths of water _(be)from the river.,那几乎是世界人口的一半,而且世界上大约五分之一的人生活在中国,基数词,序数词,复数,a/one half,o
5、ne third,two thirds,three fourths/three quarters,二分之一,四分之一,are,is,one sixthone ninthone twentieth,five sixthstwo ninthsseven twentieths,ATTENTION,读一读,one/a half a quarterthree quarters three and a half,二.It is difficult for lots of people to find jobs._ It is hard for China to supply energy and wate
6、r to satisfy peoples daily needs._探究：it是_,真正的主语是划线的_.试一试：解决人口问题对我们大家是重要的。_ is important _ us all _ _ the population problem.三.So far,our government has taken many measures to control the population.译：_探究：so far 到目前为止,常与_一起使用练习：a.So far,I _(make)several good friends in my school.b.So far,China _(have
7、)the largest population in the world.,对于许多人来说找到工作是难的,对于中国来说，为满足人们的日常需要提供能源和水是难的,形式主语,不定式,It,for,to solve,到目前为止，我国政府已采取措施来控制人口增长。,现在完成时,have made,has had,1.因为下雨，足球赛延期了。The football match was put off _ _ the rain.,2.Do you have any _(difficult)in English?,3.They have _（采取措施）to do with it.,4.Not all Ch
8、inese families can o_ their children good education.,5.It isnt easy for us _ _ _(执行)this plan.,6.They have done _ of the work.They will finish the rest soon.A.two three B.two third C.two thirds D.second three,当堂训练,because of,difficulties,taken measures,ffer,to,carry,out,C,1a Read and understand.2.Wr
9、ite 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 problems2._ Paragraph 2 B.the worlds and Asias population3._ Paragraph 3 C.the problems caused by large population,Population Problems,B,C,A,1c Read 1a again and comp
10、lete the table.,1.3 billion,job,energy,water,cities,traffic,worse,the one-child policy,living space,Read Paragraph 1 and fill in the blanks.,Asia has a population of _.Thats to say,almost _ of the people in the world live in Asia now.,more than 3 billion,half,Paragraph 1 The worlds and Asias populat
11、ion.,3 billion 6.8 billion12(half)50 percent(50%),Almost half of the people in the world live in Asia.,1.3 billion6.8 billion1 5 20 percent(20%),About one fifth of the people in the world live in China.,one,What social problems has it caused,Paragraph 2The problems caused by large population.,fifth,
12、Because of the large population,there is _ for each family.,Read Paragraph 2 and fill in the blanks,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 peoples daily nee
13、ds.,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 h
14、as worked well in controlling Chinas population.,We still have a long way to go.,Paragraph 3The 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 worlds popul
15、ation _ 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 worlds population.China has _ some policies to control the population,and these policies have _ well.But Chin
16、a 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
17、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 bef
18、ore.How can we solve the problem?,3b Write a short passage of three paragraphs based on 3a.,One possible version:,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
19、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.Wed better save them as much as possible,and try to find more new energy.In order to solve
20、 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 three2.The one-child policy has _ controlling Chinas population.A.been good at B.done well in
21、 C.taken care of D.worked well in3.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,Exercises,用所给单词的适当形式填空,China is a country with the largest_ in the world.Too many people cause too much _,for
22、 example,the food problem.And today,in order to_ the increasing population,China has carried out the_ of family planning.That is late marriage（晚婚）,late childbirth（晚育）and having fewer but healthier_.Men of 22 years old _ women of 20 years old can get married.If a man of 25 gets married with a woman o
23、f 23 or _23,their marriage is a late marriage.Childbirth by a woman at the _ of 25 or more is a late childbirth.The _ encourages people to have only one child in a family.And one-child policy is still needed in China in the _ years.,population,trouble,control,policy,children,and,over,age,government,
24、following,summary,We learn:,1.Read the fractions in English.2.Talk about population problems.,We can:,1.Some words:social,supply,natural,worse,government,paragraph,opportunity,newborn,percent,offer2.Some phrases:half of,one fifth,because of,satisfy peoples daily needs,so far,take measures to do,be known as,work well in,thanks to3.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.,Thank you.,
