3DUPUY B. Conlent-based instruction: can it help ease the transition from beginning to advanced foreign lan guage classes? [J]. Foreign Language Annals, 2000 (2) , 205-233.
4I.EAVER B L,STRYKER S B. Content-based instruc tion for foreign language classrooms[J].Foreign Language Annals,1989(3):269-275.
5KELLY L G.20 Centuries of Language Teaching[M].New York:Newbury House,1961.