Pro-constituent

代词成分

A term used in later generative linguistics, refers to an element which substitutes for a lexical item elsewhere in a sentence. The application of the term varies, depending on the grammatical model involved. In government-binding theory, for example, the symbol PRO is associated with a base-generated subject of certain infinitives.

最近的生成语言学术语，指替换句子中其他地方某一词项的成分，其应用视不同语法模型而异。例如在管辖与约束理论中，大写的PRO（大代语）是指某些不定式中由基础生成的主语。