2Center for Applied Linguistics. Foreign Language Instruction in the United States: A National Survey of Elementary and Secondary Schools[Z]. www. cal. org,1999.
3Renate A. Schulz. Foreign Language Education in the United States: Trends and Challenges [J]. Issue, 2001(1).
4Vickie Lewelling and Jeanne Rennie. National Standards: Preparing for the Future[M]. Issue, 2001 (1).
5Brown H Douglas. Principles of Language Learning and Teaching [ M ]. New Jersey: Prentice-Hall Inc., 1980. 243-244.
6Hans Nicholas. Comparative Education -- A Study of Educational Factors and Traditions [ M ]. London: Routledge & Kegan Paul Ltd. ,1967. 273.
7Stern H H. Issues and Options in Language Teaching [ M ]. Oxford: Oxford University Press, 1992. 34-91.
8Stern H H. Fundamental Concepts of Language Teaching [ M ]. Oxford: Oxford University Press, 1983.
9Nunan David. Syllabus Design [ M ]. Oxford:Oxford University Press, 1988. 4.
10McMillan James H and Schumacher Silly. Research in Education [ M ]. Addison-Wesley Education Publisher Inc. , 1997. 542.