English

Alternative forms

• complementiser

Noun

complementizer ‎(plural complementizers)

1. (linguistics) a form of subordinating conjunction
   • "That" is a complementizer in the sentence "Mary believes that it is raining".
   • 1988, Andrew Radford, chapter 6, in Transformational grammar: a first course, Cambridge, UK: Cambridge University Press, page 299:

     However, what is of particular interest to us here is
     the fact that the presence of the Complementiser whether in (37) (b) above
     excludes the possibility of having an inverted Auxiliary in pre-subject posi-
     tion, as we see from the ungrammaticality of (38) below:
     (38)      *John wondered whether would he get a degree
     Why should this be? The answer we propose here is that this is because both
     Complementisers and inverted Auxiliaries occupy the pre-subject C position:
     hence, when (as in (38) above) the C position is already filled by the Comple-
     mentiser whether, inversion of the Auxiliary is not possible, on the assumption
     that once a given position is filled by one constituent, it cannot be filled by
     another (i.e. we can only have one constituent occupying any given position).

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