Mi ne dormas bone pro la bruo.

Dormas is the present-tense verb form, meaning sleep / am sleeping.

• mi dormas = I sleep / I am sleeping
• dormi = to sleep (the infinitive)

In a normal statement, Esperanto uses the finite verb form, not the infinitive. So:

• Mi dormas = I sleep / I am sleeping
• not Mi dormi

The ending -as always marks the present tense in Esperanto.

In Esperanto, ne is the usual word for not, and it normally goes directly before the part it negates.

So:

• Mi ne dormas = I do not sleep / I am not sleeping

This is the standard placement. English uses do not in many sentences, but Esperanto does not need an extra helping verb like do.

Compare:

• Mi dormas. = I sleep.
• Mi ne dormas. = I do not sleep.

Because bone is an adverb, and it describes how the sleeping happens.

• bona = good (adjective, used with nouns)
• bone = well (adverb, used with verbs)

Here, bone modifies the verb dormas:

• dormas bone = sleep well

Compare:

• bona dormo = a good sleep
• Mi dormas bone. = I sleep well.

A native English speaker may expect good in some informal speech, but Esperanto keeps the adjective/adverb distinction very regularly.

Pro means because of, due to, or on account of.

So:

• pro la bruo = because of the noise

It introduces the cause of the problem.

This is different from ĉar, which means because and introduces a full clause:

• Mi ne dormas bone pro la bruo. = I’m not sleeping well because of the noise.
• Mi ne dormas bone, ĉar estas bruo. = I’m not sleeping well because there is noise.

So a useful contrast is:

• pro + noun phrase
• ĉar + clause

La means the. In this sentence, la bruo means the noise.

Esperanto uses la when the speaker is referring to a specific noise that is understood from the situation or context. For example, maybe there is some noise nearby that both speaker and listener know about.

• bruo = noise / a noise
• la bruo = the noise

In many real situations, la sounds natural because the source of annoyance is specific and known.

Bruo means noise.

It is often used like English noise, as a general mass noun:

• Estas multe da bruo. = There is a lot of noise.

But Esperanto nouns are grammatically countable, so in some contexts it can also mean a noise / sound disturbance depending on how it is used.

In your sentence, la bruo is best understood as the noise in a general sense.

The -n ending usually marks the direct object in Esperanto.

In this sentence, there is no direct object:

• Mi = subject
• dormas = verb
• bone = adverb
• pro la bruo = prepositional phrase

Since pro is a preposition, its noun does not take -n here:

• pro la bruo = because of the noise

You would only use -n if the grammar required an accusative, which it does not in this sentence.

Yes, Esperanto word order is fairly flexible, though some orders sound more neutral than others.

The most neutral version is:

• Mi ne dormas bone pro la bruo.

You could also say:

• Pro la bruo mi ne dormas bone.

This puts more emphasis on the cause: Because of the noise, I’m not sleeping well.

Even though Esperanto allows some flexibility, beginners should usually stick to the most straightforward order until they feel comfortable.

It can mean either, depending on context.

Esperanto present tense -as covers both:

• I do not sleep well (general/habitual)
• I am not sleeping well (current situation)

The surrounding context tells you which meaning is intended.

If someone is talking about a current problem at night, English might naturally translate it as I’m not sleeping well because of the noise. If it is a general complaint, I don’t sleep well because of the noise also works.

Yes, and it means something slightly different.

• Mi ne dormas bone pro la bruo. = I’m not sleeping well because of the noise.
• Mi ne povas dormi bone pro la bruo. = I can’t sleep well because of the noise.

The second version emphasizes inability more strongly. The original sentence simply states the result: the speaker is not sleeping well.

So both are natural, but they are not exactly the same.

Yes, Mi ne dormas bone is completely natural.

Adverbs in Esperanto can often move around a bit, but some positions sound more normal than others.

Most natural here:

• Mi ne dormas bone pro la bruo.

Possible, but less neutral depending on emphasis:

• Mi bone ne dormas pro la bruo.
• Mi ne bone dormas pro la bruo.

These alternatives may sound more marked or awkward to a learner. The usual beginner-friendly pattern is:

• subject + ne
  • verb + adverb

So Mi ne dormas bone is the best model to follow.

Sometimes in older or less literal English translation, you might see something like for the noise, but that is not the normal meaning here. The best translation is because of the noise.

So when learning Esperanto, it is better to connect:

• pro = because of / due to

and not simply memorize it as for, because that would be misleading in many sentences.

The sentence breaks down like this:

• Mi = I
• ne = not
• dormas = sleep / am sleeping
• bone = well
• pro = because of
• la bruo = the noise

So the pattern is:

subject + negation + verb + adverb + prepositional phrase

That makes it a very useful model sentence for beginners, because it shows several core Esperanto features at once:

• present tense -as
• negation with ne
• adverb ending -e
• prepositional phrase with pro
• noun with la and -o ending