8Halliday M A. Towards a language-based theory of learning[J]. Linguistics and Education, 1993,5(2):93-116.
9Gstrein S, Hug T. Integrated micro learning during access delays: A new approach to second-language learning[J]. User-centered Computer Aided Language Learning,2006:152-175.
10Wilkins D A. Second-language learning and teaching[M], London: Edward Arnold, 1974.