Questions & Answers about Ez fontos tény.
- ez = this
- fontos = important
- tény = fact
So the sentence means This is an important fact.
Grammatically, ez is the subject, and fontos tény is the predicate noun phrase.
In Hungarian, the verb to be is often left out in the present tense when the subject is third person and the predicate is a noun or an adjective.
So:
- Ez fontos tény. = This is an important fact.
- literally: This important fact.
This is completely normal Hungarian grammar, not an incomplete sentence.