拓展学习可以增加学习者的知识储备

网上写作资源
1.University of Toronto' web site on writing: http://www.utoronto.ca/writing/
2. Purdue Online Writing lab: http://owl.english.purdue.edu/
3. Norton publishing house's writing guide: http://www.wwnorton.com/college/english/litweb/write.htm
4. The University of North Carolina's page on writing about literature: http://www.unc.edu/depts/wcweb/handouts/literature.h
5.The University of Illinois: http://www.english.uiuc.edu/cws/wworkshop/writer_resources.htm