aux : auxiliary

Use of aux relation is incosistent across different Turkish UD treebank, the information below is out of date, and may not reflect the actual use.

An auxiliary of a clause is a non-main verb of the clause.

In Turkish two verbs, ol- and, in formal registers, bulun, complement the main verb with additional tense/aspect/modality suffixes that cannot be attached to the main verb due to morphological restrictions (or sometimes stylistic reasons).

The auxiliary use of ol- is different than its use as a copula, where the cop relation is used.

We use a subtype of aux, aux:q, question particle mi.

Yarın çalışıyor olacak . \n He\/she will be working tomorrow
aux(çalışıyor, olacak)

Okumuş olsa bilirdi . \n He would know if he had read (it) .
aux(Okumuş, olsa)

Sorumluluğu almış bulunduk . \n He have taken the responsibility
aux(almış, bulunduk)

We also use aux in case bound auxiliary -abil is separated from the main verb.

Göremeye de bilirdin . \n You might have also not seen it 
aux(Göremeye, bilirdin)