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It has been widely assumed that the preverbal particles of Irish are complementizers. Given the distribution of the particle aL , this assumption provides support for two central claims about WH-movement – that its application is successive-cyclic, and that it is driven by a morphosyntactic feature of the complementizer. However, the claim that aL is a complementizer also has been widely challenged. This paper aims to (re)confirm the original analysis. It argues that the sceptical literature (i) underestimates the morphosyntactic heterogeneity of Irish complementizers, and (ii) restricts attention to an overly narrow subset of constructions in which aL appears.
James McCloskey (Thu,) studied this question.