【正确答案】正确答案：Proposed by Hymes, the notion of communicative competence refers to the ability to apply grammatical, discourse and cultural knowledge to communicate effectively in particular contexts for particular purposes. There are four components in the communicative competence, namely possibility, feasibility, appropriateness and performance. Possibility refers to the ability to produce grammatical sentences. Feasibility means the ability to produce sentences that can be decoded by human brain. Appropriateness is the ability to use correct forms of language in a specific socio-cultural context. As for performance, it refers to the fact the utterance is completed. The theory of communicative competence holds that language learning should cultivate language users" ability to perform speech acts so as to facilitate their participation in speech. This is another way of saying that learning language is learning to perform certain functions. Like Halliday"s functional grammar, Hymes" theory also leads to notion/function-based syllabus, and a step further, communicative syllabus. A communicative syllabus aims at the learner"s communicative competence, and it teaches the language users needed to express and understand different kinds of functions, and emphasizes on the process of communication.

【答案解析】解析：考查交际能力及其对语言教学的影响。交际能力指学习者在具体的语境中恰当并有效运用语言进行交际的能力。它不仅包括语法形式的正确与否，语言的可接受性，还必须考虑语言是否恰当。海姆斯将这种能力归结为四个方面，即可能性、可行性、得体性和语言应用。交际能力理论认为语言学习的目的是实施一系列语言行为从而参加到交际活动中去，它带动了以意念功能为基础的教学大纲的发展，尤其带动了交际教学大纲的发展，为外语教学提供了新思路。