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第二十四单元 如何用比较与对照法推展篇章 24.1 Comparison and Contrast(比较与对照) Often we may want to describe several aspects of two subjects that have both similarities and differences.When we compare two things，we show how they are similar;when we contrast two things，we show how they are different.We may compare or contrast two schools，two cars，two friends，two jobs，two cities，etc.。For this purpose，we may employ the combined techniques of comparison and contrast.In writing the essay，you should always bear two important decisions in mind：①Whether you are to do a comparison，a contrast，or a mixture，or②Whether you are to use an item-to-item(逐事比较)or point-to-point(逐点比较)method of development(both have been explained and illustrated in Unit14) Model Essay 24-1 Shanghai and New York are two of the biggest cities in the world.They are different in some ways，but they are similar in some other ways. Shanghai is one of the most densely populated cities in Asia，and New York is one of the most densely populated cities in North America.The population of Shanghai is homogenous，but thepopulation of New York is heterogeneous.The people in Shanghai speak Chinese;the people in New York speak English instead.The cost of living in Shanghai is generally low in comparison with that in New York.While the people in Shanghai take buses or ride bikes to go to work，the people in New York drive cars or take subways to get to work.The people in Shanghai use fans to keep cool，where as the people in New York use air-conditioning. | 
