新人教版初三英语下学期lesson 50.ppt

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1、Lesson 50Standing room onlyLets play a game Bingo”!10,521,900 198,679 2,683,0005,330,000 9,784 1,198,0004,978 444,333 60，0213,328,000 10,000 321，321159,500 580，220 24,778AustraliaIndia Chinamore developed countries less developed countriesGreat BritainAmericaSouth Africa more developed countries les

2、s developed countriesFranceChinaYear The populationof the worldThe population of the moredeveloped countriesThe population of the lessdeveloped countries19502,525,000,000832,000,0001,693,000,00019905,321,000,0001,214,000,000 4,107,000,00020006,055,000,0001,188,000,000 4,867,000,000Read and learnone

3、minute259!an hour259*60=?15，540!one year?136,130,400!in 100 years?multiplybyone day15,540*24=?372,960standing room onlystanding room only 资 源 的 短 缺Forest CoalWater and landOilPoverty（贫穷）HungerPollutionLimited living room and the housing in bad conditionMore unemployment and morechallenge(就业困难竞争激烈）Cr

4、owdedWhatWhat shall shall we dowe do?ChinasChinas FamilyFamily PlanPlanChinas has slowed down the increase of the population.One-child Family PolicyJulyJuly 1111World Population DayWorld Population Day period population2000 years ago400 years agoat the beginning of 20th centuryin 1970in 1990at the b

5、eginning of the 21st centuryby the year 2010250 millionover 500 millionabout 1.7 billionover 3.6 billionmore than 5 billionover 6 billion 7 billionRead the text,answer the questions below!1.How many babies are born in one hour?2 How is the worlds population growing?3When was the population over 6 bi

6、llion?4.What will happen in about 600 years?5.How large of space will each person have by then?15,540 babies are born.Faster and fasterAt the beginning of the 21st century.There will be standing room only.They will have only half to one square metre to live in.Discussion Do you think it is a must to

7、 carry out One Child Policy in China?1.在二十世纪初在二十世纪初2.仅剩站立的空间仅剩站立的空间3.7*8564.在十九世纪末在十九世纪末5.发展中国家发展中国家6.发达国家发达国家1.at the beginning of the 21st century2.standing room only3.multiply 7 by 8 is 564.at the end of the 19th century5.less developed countries6.more developed countries1.中国的人口在不断地增长。中国的人口在不断地增长

8、。_ all the time.2.不断增长的人口可能将成为世界上最大的一个挑战不断增长的人口可能将成为世界上最大的一个挑战_ of the world.3.我们的课室是我们的课室是48平方米。平方米。Our classroom is _.4.到时，将没有足够的空间给任何人了。到时，将没有足够的空间给任何人了。By then,_5.10*7=70._The population of China is growing/increasingThe increasing population may be the greatestchallenge48 square meters there will be hardly enough space foranybody else.Multiply 10 by 7 is 70Thank you&Good-bye Class!