4.2.1 Determiners and Complements

As we have pointed out, only indefinite DPs can appear in the post-verbal position in there sentences. Interestingly, in this construction the verb appears to agree with the post-verbal element. So in (36a) the post-verbal DP is indefinite, the sentence being grammatical, and the verb is in the plural form. The determiner some is an indefinite plural determiner and these properties are projected to the whole phrase. The determiner a is indefinite and singular and hence the DP that it heads can go in the post-verbal position of a there sentence and the verb will be in its singular form, as in (36b). The determiner the is definite, but unmarked for number. Therefore it cannot head a DP in the post-verbal position of a there sentence (36c), but it can trigger either singular or plural agreement on the verb when it sits in the canonical subject position, (36d) and (36e), depending on what NP it takes as a complement.