In this paper, I investigate the functional dimension of non-finite causal constructions, exemplified using the English because X constructions. The analysis identifies two functions of these constructions: expressing causality and commenting. Primarily, non-finite causal constructions express cause or reason. Secondarily, however, speakers can also use these constructions to offer a comment about the expressed cause or reason. These two functions represent two poles on a functional continuum. While some non-finite causal constructions only express causal meaning and some serve predominantly as comments, they usually combine both functions.
