The active diathesis does not explicitly determine the semantic role of the subject, although it shows a preference for the macroroles of agent and experiencer.
Although the subject of an active predicate usually takes the macrorole of agent (acting, causative etc.) or experiencer (experiencer, beneficiary or malefactive, receiver), it may als sporadically take the macrorole of patient. In the latter case the verb in question may often be regarded as the passive equivalent of an active verb (e.g. ἀποθνῄσκω 'to die' or sometimes 'to be killed').