Разве пожарный не объяснял, где стоит огнетушитель?

Разве is a particle that adds surprise, doubt, or mild contradiction. It often suggests that the speaker thought the opposite was true.

So Разве пожарный не объяснял...? is not a plain neutral question. It feels more like:

• Didn’t the firefighter explain...?
• Surely the firefighter explained...?
• I thought the firefighter had explained...?

The speaker is usually reminding someone or expressing disbelief that they do not know or remember.

In Russian, as in English, a negative question can express an expectation.

So не объяснял? does not simply mean the speaker thinks no explanation happened. With разве, it often means the speaker expects that the explanation did happen and is surprised that someone is acting as if it did not.

Compare the feeling:

• Пожарный объяснял...? = a more neutral question
• Разве пожарный не объяснял...? = Didn’t the firefighter explain...?

So the negative form here is part of the sentence’s conversational nuance, not just plain factual negation.

This is a very common aspect question.

Объяснял is the imperfective past of объяснять. In this sentence, it sounds natural because the speaker is asking about the fact or process of explaining, not emphasizing one completed result.

It can suggest:

• Wasn’t there an explanation?
• Didn’t he go over that?
• Didn’t he explain where it was?

If you said Разве пожарный не объяснил...?, that would focus more strongly on a single completed act of explanation.

Very roughly:

• объяснял = was explaining / used to explain / did explain, with focus on the action itself
• объяснил = explained completely, with focus on completion/result

In everyday speech, объяснял often works well when reminding someone about prior instruction.

Yes, historically пожарный is an adjective, but in modern Russian it is very commonly used as a noun meaning firefighter.

This is called a substantivized adjective: an adjective that functions as a noun.

In this sentence:

• пожарный = the firefighter
• masculine, singular, nominative

Russian does this quite often. Another example is:

• больной = a sick person / patient

So here you should simply understand пожарный as a normal noun in use, even though its form looks adjectival.

Because где стоит огнетушитель is a subordinate clause.

The main clause is:

• Разве пожарный не объяснял...?

The subordinate clause tells what he explained:

• где стоит огнетушитель

Russian normally puts a comma before subordinate clauses introduced by words like:

• что
• где
• когда
• почему
• как

So the comma here is standard Russian punctuation.

Both are possible, but стоит is very natural here.

Russian often uses position verbs for objects:

• стоит = stands
• лежит = lies
• висит = hangs

An огнетушитель is typically kept upright, so стоит sounds very natural: it is standing somewhere.

Находится is also correct, but it is more neutral or formal:

• где находится огнетушитель = where the fire extinguisher is located

So:

• стоит = everyday, physical placement, often upright
• находится = more neutral/formal, less physical

Because the sentence is talking about a past explanation of a location that is understood as currently true or generally true.

So the idea is:

• The firefighter explained it earlier
• The extinguisher is still there now

That is why Russian naturally uses:

• объяснял = explained, in the past
• стоит = stands/is, in the present

If the location were only true at that past time, you might use the past tense:

• где стоял огнетушитель = where the fire extinguisher was standing

But in the original sentence, the speaker is probably referring to the extinguisher’s current location.

Огнетушитель is in the nominative singular.

That is because it is the subject of the verb стоит:

• огнетушитель стоит = the fire extinguisher is standing

Even though the whole clause depends on объяснял, inside the subordinate clause огнетушитель still functions as the subject, so nominative is correct.

Yes, Russian word order is flexible, but the original order is natural and neutral.

The given sentence:

• Разве пожарный не объяснял, где стоит огнетушитель?

This sounds like a normal conversational way to say it.

You could change word order for emphasis, for example:

• Разве не объяснял пожарный, где стоит огнетушитель?

That can put slightly more focus on the action explaining.

Or inside the subordinate clause:

• где огнетушитель стоит

This is possible, but less neutral and more marked in ordinary prose.

So for a learner, the original sentence is a good standard model.

Usually, yes.

Because of разве + не, the speaker is not just asking for information. The speaker is often implying something like:

• You should already know this
• I thought this had been explained already
• Why are you asking / why don’t you remember?

So the sentence can carry a slightly impatient, surprised, or corrective tone, depending on context and intonation.

That tone is an important part of how this sentence works in real conversation.