Questions & Answers about Az érvényességi idő hosszú.
Az is the definite article, so it means the.
Hungarian has two forms of the definite article:
- a before a consonant
- az before a vowel
Because érvényességi begins with é, a vowel, the correct form is az: Az érvényességi idő.
This is a bit like English a/an in terms of sound choice, but remember that a/az means the, not a/an.
In Hungarian, the verb to be is usually omitted in the present tense, third person when the predicate is a noun or an adjective.
So:
- Az érvényességi idő hosszú. = The validity period is long.
There is no need to say van here.
But in other tenses, or with other persons, forms of to be do appear:
- Az érvényességi idő hosszú volt. = The validity period was long.
- Hosszú vagyok. = I am tall/long (grammatically showing that vagyok appears in 1st person)
So the missing is is completely normal.