5Claire Kramsch. Language and Culture[M]. Shanghai: Shanghai Foreign Language Education Press, 2000: 3.
6Jessner, U. Linguistic Awareness in Multilinguals: English as a Third Language[M]. Edinburgh: Edinburgh University Press, 2006.
7Jorda M. P. S. Third Language Learners: Pragmatic Production and Awareness[M]. Clevedon: Multilingual Matters Ltd, 2005.
8Kemp C. Metalinguistic awareness in multilinguals implicit and explicit grammatical awareness and its relationship with language experience and language attainment[D]. Doctoral thesis submitted to the University of Edinburg, 2001.
9Odlin T. Language Transfer Cross-linguistic Influence in Language Learning [M]. Shanghai: Shanghai Foreign Language Education Press, 2001.
