chapter  25
Double object constructions and the use of “object markers”
Pages 13

In direct object constructions, the object marker is used to refer to a specified object, as in (1), while unspecified direct objects are used without an object marker, as in (2). In particular, the object marker is used when the object of the verb is known by both the speaker and the listener, is a proper noun, or is a noun used with a possessive/demonstrative pronoun. Importantly, some expressions that use the determinate article “the” in English may still constitute unspecified objects, which justifies the absence of an “object marker” in the example (2d) (from Seidl and Dimitriadis 1997).