Questions & Answers about A határidő novemberben lesz.
No. Hungarian a means the, not English a/an.
So A határidő means the deadline.
It is capitalized here only because it is the first word of the sentence. In the middle of a sentence, it would normally be a.
Hungarian has two forms of the definite article:
- a before a consonant sound
- az before a vowel sound
Since határidő starts with h, you use a:
- a határidő
If the next word began with a vowel, you would use az instead.
Because határidő is the subject of the sentence, so it stays in its basic dictionary form, the nominative singular.
Here, határidő is simply deadline / the deadline. There is no special ending on it because it is not being marked as an object, possession, destination, and so on.