Na końcu tego zdania powinien być wykrzyknik.

There should be an exclamation mark at the end of this sentence.

Breakdown of Na końcu tego zdania powinien być wykrzyknik.

• być: to be
• ten: this
• powinien: should
• zdanie: the sentence

Questions & Answers about Na końcu tego zdania powinien być wykrzyknik.

Why is it na końcu, not na koniec?

Because na końcu describes a location: at the end.

In Polish, na can take different cases depending on meaning:

• na + locative = location
  
  • na końcu = at the end
• na + accusative = movement toward a place / result
  
  • na koniec = for the end / at the end / finally, often more like a time expression or destination

So here the sentence is talking about where the exclamation mark should be, not movement toward the end.

Why does koniec become końcu?

Because after na in the meaning of location, the noun goes into the locative case.

The basic form is:

• koniec = end

Its locative singular form is:

• końcu

So:

• na końcu = at the end

This is just the case form required by the preposition and meaning.

Why is it tego zdania?