【正确答案】To expand the concept of competence, D. H. Hymes proposes communicative competence, which has four components: possibility, feasibility, appropriateness and performance. In Hymes' view, the learner acquires knowledge of sentences not only as grammatical but also as appropriate. It stresses the context in which an utterance occurs, which also leads to a concentration on discourse, in Hymes' term linguistic routines—the sequential organization beyond sentences.

【答案解析】[解析] 本题考查Hymes的交际能力。Hymes着眼于研究个人和社团的各种说话方式，从社会文化的角度出发研究语言，提出了交际能力的概念。