1、RA九年级 09-10上学期,Unit 1,The Changing World,Section C,Topic 2,China has the largest population.,Learn the new words and phrases : difficulty, be short of, so far, take measures to do sth., percent 2. Learn some useful sentences: (1) and about one fifth of the people in the world live in China. (2) our
2、government has taken many measures to control the population. (3) Thanks to the policy, China is developing quickly and peoples living conditions are improving rapidly.,Teaching aims and demands,3. Talk about the problems the large population causes:(1)Its difficult for lots of people to find jobs.(
3、2), we are short of energy and water.(3)Most cities are more crowded than before, and the traffic is much heavier. 4. Get students to know how serious the worlds population problem is.,New words,Review,88 2. 886 3. 7891,Read,4. 4758032 5. 9487908099 6. 12876908879,T: You have mastered how to say the
4、se numbers. Now look at the chart and review what weve learned in Section B. Whats the population of the world?,Discussion,Think,计划生育 利国利民,1a Read and understand,In 2005, the worlds population was about 6.5 billion. More than three billion people live in Asia now. Thats almost half of the worlds pop
5、ulation.,China has the largest population in the world, and about one fifth of the people in the world live in China. Because of the large population, there is less living space for each family. And its difficult for lots of people to find jobs. The large population also causes many other difficulti
6、es for the whole nation. For example, we are short of energy and water. Most cities are more crowded than before, and the traffic is much heavier. The large population has become a serious problem.,So far, our government has taken many measures to control the population. One is known as the one-chil
7、d policy. It has worked well in controlling Chinas population. Thanks to the policy, China is developing quickly and peoples living conditions are improving rapidly. However, the population problem is still serious in China. We still have a long way to go.,1b Work alone,Read 1a again and write down
8、the problems caused by the large population in China. You can also add your own opinions.,1. _ 2. _ 3. _ 4. _ 5. _ 6. _ ,There is less living space for each family.,Its difficult for lots of people to find jobs.,We are short of energy and water.,Most cities are more crowded than before.,The traffic
9、is much heavier.,2a Work alone,Every minute, about 2961 babies are born in the world. That means people have to _ _ for about 375 840 newborn babies every day. The worlds population growing _ _ _. It has become one of the biggest problems today.,Listen to the tape and fill in the blanks.,find,food,f
10、aster,and faster,China has the largest population in the world. There are about 1.3 billion people in China. It has reached _ percent of the worlds population. China _ _ _ some policies to control the population, and these policies _ _ well. But China still faces a serious population problem.,twenty
11、,has carried out,have work,1. Every minute, about 261 babies are born in China. 2. The worlds population is growing more and more slowly. 3. India has smaller population than China. 4. China has two fifth of the words population. 5. The Chinese government has solved the population problem successful
12、ly.,Read 2a again and then mark True (T) or False (F).,2b Work alone,Search for information about the population problem in China and then write a composition about it. The following questions may help you.,3 Written work,1. Whats the population of China?,2. The largest population causes many proble
13、ms both in cities and in the countryside, doesnt it?,3. What problems are they?,4. What has the government done to deal with the problems?,Explanation,1. , and about one fifth of the people in the world live in China. ,而且世界上大约五分之一的人口生活在中国。,one fifth是分数的表达法。英文分数表达法：分子为基数词，分母为序数词，先读分子后读分母。当分子大于1时，分母的序
14、数词变复数，直接在词尾加“s”。可以这样记：巧记英语分数不费事，“母序子基”四个字，分子大于1，分母加s。,如 : 1/4 one fourth 3/4 three fourths 2/3 two thirds 1/2 a (one) half 4 1/2 four and one half 6 3/5 six and three fifths,【注意】 分数作定语时, 与所修饰的名词之间加of。如：,Three fifths of the students in our class are girls. 在我们班五分之三的学生是女同学。 I ate two thirds of that ap
15、ple. 我吃了那个苹果的三分之二。,Three fifths of the students have passed the exams. 五分之三的学生都已经通过了考试。 One half of the bread went bad because of bad weather. 由于糟糕的天气，一半的面包坏了。,分数后面可接可数名词复数，也可接不可数名词，谓语动词的单复数和分数词之后的名词保持一致。如：,【拓展】,（1） whole意为“整个的、全部的”。如：,2. The large population also causes many other difficulties for
16、the whole nation.,（3） whole后面通常接单数名词，它一般不能与物质名词或不可数名词连用，如不可以说the whole money，应说all the money （全部的钱）。,（2） whole还可意为“完整的、无损伤的”。如：,He was surprised to find himself whole after the car accident.,I told him the whole story.,（1） whole与all两者都有“全部的”意思，但使用时，在句子中的位置不同。whole用于冠词、代词等之后；all用于冠词、所有格或其它限定词之前。一般而言，
17、all与复数名词连用时，有“所有的”意思；与单数名词连用时，有“整个的、全部的”意思。,（2） the whole of 相当于all。如：the whole of my life / all my life; the whole of the time / all the time等。,【拓展】,3. For example, we are short of energy and water. 例如，我们面临着能源和水的短缺。,be short of 缺乏，短缺 如：,She is always short of money. 她总是缺钱。,【连接】 （1）for short 简称，缩写 如
18、：,Robert is called Bob for short. 罗伯特简称为鲍勃。,（2）short for 是的缩写 如：,TV is short for television. TV是television的缩写形式。,so far意为“到现在为止”，经常用在含有完成时态的句子中，可置于句首，也可置于句末。如：,4. So far, our government has taken many measures to control the population. 到目前为止，我国政府已经采取许多措施开控制人口增长。,I have not finished the work so far.
19、 The weather has so far been hot this summer.,5. One is known as the one-child policy. 其中一项众所周知的措施是独生子女政策。,be known as 作为而出名，相当于be famous as 如：,Qi Baishi was famous as an artist in the world. 齐白石作为画家而闻名于世。 （ was famous as was known as） She was well known as an excellent writer. 他是一位公认的优秀作家。 （ was we
20、ll known as was famous as）,6. It has worked well in controlling Chinas population. 它在控制中国人口数量方面取得 了显著的功效。,work well in doing 表示“在方面起明显的作用”。 如：,Doing eye exercises works well in protecting our eyesight. 做眼保健操在保护我们的视力方面起明显作用。,Exercises,1. Lucy, _ you _ your new watch?Not yet. A. do; find B. have; foun
21、d C. did; find D. are; finding 2. Is that Chris speaking?Sorry, he isnt in. He _ abroad onbusiness. A. has gone B. has been C. has been to D. has gone to 3. You will fall behind others _ you work hard. A. unless B. when C. after D. until,B,A,A,I. 单项选择。,4. What happens _ you? Im worried. Were very sh
22、ort _ food at the moment. A. to; of B. of; to C. with; of D. to; to 5. _ it was raining, _ the workers went on working. A. Even though; but B. Even though; / C. Though; but D. Because of; / 6. When did you buy a _ of trousers? I bought them a _ of days ago. A. couple; pair B. pair; pair C. couple; c
23、ouple D. pair; couple,B,A,D,1. 到目前为止，学校已经采取很多措施保持学校清洁。 _ _, our school has taken many measures to keep the school clean. 2. 我好像以前曾在什么地方见过他。 _ _ _ I have ever seen him somewhere before.,II. 英汉互译。每空一词。,So far,It seems that,3. 政府正在努力改善农民的生活条件。 The government is trying to improve the _ _ of peasants. 4. Bill会弹钢琴，Jane也会。 Bill can play the piano, _ _ Jane. 5. 最近几年，我的家乡发生了很大的变化。 My hometown _ _ _ in recent years.,living condition,so can,has changed,greatly,Homework,Make a survey and complete the chart, then write a survey report. You can search for information on the Internet.,See you,
