In place of the verb's subject, the construction instead may include a syntactic placeholder, also called a dummy.
The ability to undergo this transformation is a frequently used test to distinguish unergative and unaccusative verbs.
"In the latter example, the subject (Die Kinder, "the children") has been deleted, and in its place is the dummy es "it".
The sentence can be constructed without an overt subject by placing an adverbial in the first position: HeuteTodaywirdisgespielt.played.DortTherewirdisgespielt.played.Heute wird gespielt.
The verb parlar "to speak" is intransitive and takes an indirect object marked by a "to" or by co "with": although there is no direct object to be promoted to subject, the verb can be passivized becoming subjectless, i.e. impersonal.
Likewise, the verb tełefonar "to phone / to ring up" takes a dative indirect object in Venetian (marked by a "to"), still it is often used in the impersonal passive: Differently from Dutch, the subject can be introduced only with the active voice: Impersonal passive constructions are quite common in Latin.
Slavic languages have the impersonal passive, formed with the reflexive particle (the examples below are in Serbian): The verb is in the third person singular (compare with Latin saltatur) As with other impersonal forms, the past tense forms are in neuter singular: No dummy pronoun can be used.
There appears to be no restriction like in Turkish, e.g. the verb "to die" can be put into impersonal passive as well.