Breakdown of Der Lärm hier ist wirklich ein Problem.
sein
to be
ein
a, an (eine)
hier
here
das Problem
the problem
Questions & Answers about Der Lärm hier ist wirklich ein Problem.
Why is hier right after Der Lärm instead of later in the sentence?
Just like in English, you can place a location word like hier (here) directly after a noun to describe it. Because they belong together, Der Lärm hier (The noise here) acts as a single block taking up the first position in the sentence, right before the verb ist.
Could I change the word order and say Der Lärm ist hier wirklich ein Problem?
Yes, absolutely! If you do that, Der Lärm is the subject in position 1, and the verb ist stays in position 2. Then hier just acts as a normal adverb later in the sentence telling us where the problem is. Both versions mean the same thing and sound very natural.
Is ein Problem in the nominative or accusative case here?
It is in the nominative case. The verb sein (to be) acts like an equals sign linking the subject (Der Lärm) to what it is (ein Problem). Verbs like this never take an accusative object. Since Problem is a neuter noun, it uses the nominative article ein.
I've also learned the word das Geräusch for noise/sound. When do I use Lärm instead?