大学英语写作辅导(ppt39)-考试学习(编辑修改稿)

大学英语写作辅导(ppt39)-考试学习(编辑修改稿)内容摘要：

assess one’s ability in spoken English. 19 主题句的写作： 一、主题句的构成 Smoking cigarettes can be an expensive habit. topic controlling idea People take part in sports for various reasons. 二、主题句对段落内容有以下几个方面的限制 地点 时间 差异 类同 数量 对主体的某一方面加以限制 20 怎样写好主题句： 1 Look at An Example  Title: What Would Happen If There Were No Electric Power? there were no electric power, we could not live and work. there were no electric power, people would have to use fire to light the room in the evening. 21 怎样写好主题句： 2 , power is the foundation of the society. there were no electric power, our modern world would be in trouble. 主题句写作注意事项： 1. 主题句内容要清楚 a. Television is very important. 22 b. Television plays an educational role in our daily life. a. Blue jeans are popular. b. Blue jeans are popular in China now, especially among young people. 2. 主题句命题要宽窄适度 a. American food is tasteless and greasy because Americans use too many canned, frozen and prepackaged foods and because they fry everything in oil or butter. b. American food is tasteless and greasy. 23 3. 主题句必须主题单一 a. San Francisco is famous for its temperate climate, its many tourist attractions, and its cosmopolitan(全球的 ) atmosphere. b. San Francisco is famous for many of its tourist attractions. a. 树的种类很多而且对人类都有用。 b. 树在很多方面都有助于人类。 a. 爱惜树的人用木材制造种种器物，而不爱惜树的人却在乱砍滥伐。 b. 但是许多人没有认识到树的作用。 24 三、如何根据汉语提纲提炼主题句 （ 1）书有很多种而且内容各不相同。 （ 2）书是我们的老师。 （ 3）然而读坏书也会有害处。 In English: 1. There are various kinds of books and their contents are different. 2. Books are our teachers and reading books may enrich our knowledge. 3. Some bad books, however, may give nothing good to their readers. 25 Example 1 1. At present, people don’t pay enough attention to making their cities green. 2. Making cities greener will improve our environment. 3. People should plant more trees to make their cities g。