Questions & Answers about A piknik szombaton lesz.
A is the definite article in Hungarian, like the in English.
So a piknik means the picnic.
Hungarian has two definite articles:
- a before words that begin with a consonant
- az before words that begin with a vowel
Since piknik starts with p, it takes a: a piknik.
Egy means a/an, one, so egy piknik would mean a picnic in an indefinite sense.
Here, a piknik suggests that the speaker and listener both know which picnic is being talked about. That is why Hungarian uses the definite article.
Compare:
- A piknik szombaton lesz. = The picnic will be on Saturday.
- Egy piknik szombaton lesz. = A picnic will be on Saturday.
This sounds more like introducing one picnic among others, not a specific already-known event.