Nominative: result or property as (agreeing) argument

Syntactical Level

The nominative signals a result or property as an argument, agreeing with the subject.

Lexical usage

Result (with ‘to be appointed as…’ or ‘… to be called’)

With verbs such as αἱρέομαι ‘to be chosen as’, ὀνομάζομαι ‘to be called’ etc.

Property (with ‘to be regarded as…’)

Not only with the (passive) verbs νομίζομαι, ποιέομαι, τίθεμαι ‘to be regarded as’, but also with verbs such as φαίνομαι ‘to appear’.

Syntactic behaviour

In many cases this involves passive constructions in which the agreeing object is put in the nominative, in order to agree with the ‘original’ object, which has been converted to the subject. For example, the sentence ὁ Βάκχιος θεὸς νομίζεται ‘Bacchios is regarded as a god’ can be considered a passivisation of τὸν Βάκχιον θεὸν νομίζω ‘I regard Bacchios as a god’.
Like other agreeing arguments, for example the predicate NP, this agreeing argument never takes the article. As a consequence some grammars regard this nominative as a predicate NP.

Example Sentences: 

ὁ Βάκχιος δὲ τίς; θεὸς νομίζεται;

Who is Bacchus? Is he regarded as a god?