ABSTRACT
This chapter is concerned with the difference between the definite and the indefinite article and also the uses of indefinites which are generally referred to as 'specific'. It sees failure to satisfy the exclusiveness condition within some pragmatic set resulted in the non-locatability of the referent within that set. It also sees that non-specific indefinites involve reference to a singular object which is arbitrary for both speaker and hearer. From the discussion of set-existential verb, the exclusiveness condition is again completely absent. The discrepancy in knowledge and experience which speaker and hearer bring to their speech exchange which explains why an ambiguity arises with indefinites, but not with determiners which presuppose pragmatic control on the hearer's part of the existence and identity of the referent. The speaker therefore has a choice when using an establishing relative clause of referring inclusively with a definite article, or of being non-committal with regard to inclusiveness and exclusiveness by using an indefinite.
