“单”和“单单”是一组比较常见的近义词,它们在语义和用法上有同有异,本文从共时平面出发,以大量语料为参照,以句法功能、语义特征、语用特征、语义指向、词语搭配相结合的视角,考察二者的异同。 The “single” and the “single” are a group of relatively common synonyms, which have the same semantics and usage. Based on the synchronic plane, taking the large number of corpora as reference, this paper takes syntactic functions, semantic features, Pragmatic features, semantic orientation, the combination of words with the perspective of examining the similarities and differences between the two.