We all know that cigarette smoking is a dangerous habit because it causes health problems. Doctors say it can be a direct cause of cancer of the lungs and throat and can also contribute to cancer of other organs. In addition, it can bring about other health problems such as heart and lung diseases. It is clearly identified as one of the chief causes of death in our society．
1．3示范段落分析
这是一个典型的段落，可概括提纲如下：
主题句： We all know that cigarette smoking is a dangerous habit，because it causes health problems．
推展句： 1. Doctors say it can be a direc cause of cancer of the lungs and throat and can also contribute to cancer of other organs．
2. It can bring about other health problems such as heart and lung diseases．
结论句： It is clearly identified as one of the chief causes of death in our society．
从以上提纲可见，主题句提出了一个问题： What kind of health problems does cigarette smoking cause？随后的两个推展句回答了这个问题，结论句总结了推展句并再一次强调主题句。
高考资源网版权所有 ©2005-2009
未经许可，盗用或转载本站资料者，本站将追究其法律责任！
