关键词: 疑问, 选择, 句法标示, 特征移位

Abstract: Cross-linguistically, the syntactic typing of the question force is achieved through two syntactic means, namely, the addition of an element and the T to C movement. The disjunction haishi (还是) in modern Chinese alternative questions (AQs) carries [+q] feature, which is not seen in other languages. In the syntactic computation process, the [+q] feature of haishi moves to C position in the CP domain after spell-out to satisfy its feature checking requirements, thus marking the clausal type of Chinese AQs. Feature movement is comparatively more economical and universal to languages and the [+q] feature of haishi makes Chinese AQs more economical in the clausal typing.