仁爱英语九年级上册Unit1 Topic 2 SectionA课件.pptVIP

Topic 2 What has happened to the population?;;1a Read and understand; In 2oo5, the world’s population was about 6.5 billion. More than three billion people live in Asia now. That’s about half of the world’s population. China has the largest population in the world, and about one fifth of the people in the world live in China. A large population causes many difficulties, not only for every family, but also for the whole nation. It has become a serious problem. China has done something to control the population. One is known as the one-child policy. It has worked well in controlling China’s population. Thanks to the policy, China is developing quickly and people’s living conditions are improving rapidly. However, the population problem is still serious in China. We still have a way to go. ;1b Work alone;2a Work alone Listen to the tape and fill in the blanks ;2a Work alone Listen to the tape and fill in the blanks ;2b Work aloneRead 2a again and then mark T for True or F for False+ ;3 Written workSearch for more information about the population problem in China, and then write something about it. The following questions may help you.;1.and about one fifth of the people in the world live in China. 【拓展】 one fifth 分数表达法。英文分数表达法，基数词/序数词，先读分子再读分母。当分子大于 1 时，分母的序数词变成复数，直接再词尾+ “s”。如： ? one fourth ? three fourths ? a half 5/7 five sevenths ;2.Because of our large population, we are short of energy and water. be short of 缺乏，短缺。如： We were short of money in the past. 过去我们总缺钱。 【链接】a) for short 简称，缩写。 David is called Dave for short. b) short for 是…… 的缩写。 如：TV is short for television.