La interrompo daŭris unu horon.

La is the definite article, meaning the. It shows that the speaker has a specific interruption in mind, not just any interruption.

So:

• La interrompo = the interruption
• Interrompo = an interruption or interruption in a general sense

In this sentence, la tells us we are talking about a particular interruption that the listener already knows about from context.

Interrompo is a noun built from the idea of interrupting.

• interrompi = to interrupt
• -o = noun ending

So interrompo means an interruption.

This is very typical in Esperanto: many words are easy to recognize once you know the ending.

• -o = noun
• -a = adjective
• -e = adverb
• -i = infinitive verb

Daŭri means to last, to continue, or to go on. In this sentence, it means lasted.

• daŭr- = the root about continuing/lasting
• -is = past tense

So daŭris = lasted

Because the sentence is talking about a completed event in the past, the past tense -is is used.

In Esperanto, verbs do not change according to person or number.

So the same past-tense form daŭris works for:

• mi daŭris
• li daŭris
• ili daŭris
• la interrompo daŭris

This is much simpler than English, where learners have to remember forms like I am, he is, they are. In Esperanto, the tense ending stays the same.

The -n on horon marks duration. In Esperanto, a length of time can be shown with the accusative ending -n.

So:

• unu horon = for one hour
• literally, it marks the time span directly

This is why the sentence is:

• La interrompo daŭris unu horon.

not:

• La interrompo daŭris unu horo.

That second version would sound wrong in standard Esperanto.

Yes. You could also say:

• La interrompo daŭris dum unu horo.

This also means The interruption lasted for one hour.

But Esperanto often uses the accusative of duration instead of dum when giving a time span directly:

• unu horon
• du tagojn
• tri monatojn

Both patterns are possible, but the version with unu horon is very natural and common.

Because Esperanto can express duration directly with the accusative -n, so no preposition is necessary.

In English, we often need for:

• It lasted for one hour

In Esperanto, the -n already does that job:

• ĝi daŭris unu horon

So the language can be more compact here.

Unu means one, and here it simply modifies horon.

Since there is only one hour, horo stays singular:

• unu horon = one hour

If there were more than one, the noun would become plural and still take -n if it is a duration expression:

• du horojn = two hours
• tri tagojn = three days

So the full pattern is:

• singular duration: unu horon
• plural duration: du horojn

The given word order is the most neutral and natural one:

• La interrompo daŭris unu horon.

Esperanto word order is fairly flexible, but the normal pattern is still:

• subject + verb + complement

Because unu horon has -n, its role is clear, so some rearrangement is possible for emphasis. Still, for a learner, the standard order is the best choice.

Not exactly.

• interrompo = an interruption, something that breaks or stops an activity
• paŭzo = a pause, a break, often more neutral or planned

So interrompo suggests that something was interrupted. Paŭzo can simply mean a pause without that stronger sense.

In this sentence, interrompo is the right word if something was interrupted and that interruption lasted an hour.

A rough pronunciation is:

la in-ter-ROM-po da-OO-ris OO-nu HO-ron

A few useful points:

• every vowel is pronounced clearly
• stress is always on the second-to-last syllable
• so:
  • interrompo → in-ter-ROM-po
  • daŭris → DAŬ-ris
  • horon → HO-ron

The diphthong aŭ in daŭris sounds something like ow in cow, though exact pronunciation depends on accent.