souon ga shinpai nara, yoru ni mou ichido kite kakuninshitara dou?

If you’re worried about noise, how about coming again at night and checking?

Breakdown of souon ga shinpai nara, yoru ni mou ichido kite kakuninshitara dou?

• が: subject particle
• に: time particle
• 夜よる: night
• 〜て: connective form

Questions & Answers about souon ga shinpai nara, yoru ni mou ichido kite kakuninshitara dou?

Why is it 騒音が心配 and not 騒音を心配?

Because 心配 is being used here as an adjective-like word, not as the verb 心配する.

• 騒音が心配 = I’m worried about the noise / noise is a concern
• 騒音を心配する = to worry about the noise

With 心配 used this way, the thing that causes concern is often marked by が.

Compare:

• お金が心配です。 = I’m worried about money.
• 将来が心配です。 = I’m worried about the future.

So 騒音が心配なら is very natural.

What part of speech is 心配 here?

心配 is a na-adjective (and also a noun, depending on how it is used).

In this sentence, it works like a predicate meaning worried / concerned:

• 騒音が心配だ = I’m worried about the noise

Then it becomes:

• 騒音が心配なら = if you’re worried about the noise

So even though English uses a verb like worry, Japanese often uses 心配 as an adjective-like expression.

Why is it 心配なら, not 心配だなら?