The core function of a noun is to act as a naming word. It identifies subjects, objects, and other entities within a sentence. Option C accurately captures this. Option A describes the role of an adverb, option B refers to conjunctions, and option D describes adverbs of time and manner. * **Core考点:** 名词的基本功能 * **解题思路:** 识别名词的核心作用 * **选项分析:** * A: 错误，修饰动词的是副词。 * B: 错误，连接分句的是连词。 * C: 正确，名词的核心作用是命名。 * D: 错误，表示时间或方式的是副词。 * **易错点:** 容易将名词的功能与其他词性混淆。