Grammatical relations, particularly the notions of transitivity, case marking, ergativity, passive and antipassive have been a favourite subject of typological research during the last decade, but surprisingly, the notio
Grammatical relations, particularly the notions of transitivity, case marking, ergativity, passive and antipassive have been a favourite subject of typological research during the last decade, but surprisingly, the notion of valency has been of marginal interest in cross-linguistic studies, though the syntactic and semantic status of participants is, to a great extent, determined by the relational properties of the verb. Valency is the property of the verb which determines the obligatory and optional number of its participants, their morphosyntactic form, their semantic class membership (e.g. ± animate, ± human) ,and their semantic role (e.g. agent, patient, recipient). The valency inherently gives information on the nature of the semantic and syntactic relations that hold between the verb and its participants. If a verb is combined with more participants than allowed or less than required, or if the participants do not show the required morphosyntactic form or class membership, the clause is ungrammatical. In other words, it is not sufficient to consider only the number of actants as a matter of valency, but it is only acceptable if all semantic and morphosyntactic properties of the relation between a verb and its participants that are predictable from the verb are included. The predictability of these properties results from their inherent givenness, and it does not seem reasonable to count some inherently given relational properties as a matter of valency, but not others (compare Helbig (1971:38f) and Heidolph et ale (1981:479) who distinguish between the quantitative, syntactic and semantic aspect of valency).