7Karen Blanchard, Christine Root. Ready to Write from Paragraph to Essay[M].New York: Pearson Education,2010.
8Pressly. Collective Scaffolding in Second Language Learning[A]. In Vygotsky(eds.). Approach to Second Language Research[C]. Oxford: Oxford University Press, 1996.
9Rosenshine B, Meister C. The Use of Scaffolds for Teaching Higher--level Cognitive Strategies[A]. Woolfolk A K. Readings and Cases in Educational Psvcholouv[C7. Boston, Allvn and Bacon. 1976_.
