La ekskurso sekvas longan itineron.

Esperanto endings carry a lot of grammar:

• -o = a noun
  
  • ekskurso = an excursion, outing, trip
  • itinero = an itinerary, route
• -as = present tense verb
  
  • sekvas = follows / is following
• -a = adjective
  
  • longa = long
• -n = accusative ending, usually marking the direct object
  
  • longan itineron = a long itinerary/route, as the thing being followed

So the sentence structure is very clear from the endings.

La is the Esperanto word for the.

So:

• ekskurso = an excursion / excursion
• la ekskurso = the excursion

Esperanto has only one definite article, la. It does not change for gender, number, or case.

Because -as marks the present tense in Esperanto.

So:

• sekvas = follows / is following
• sekvis = followed
• sekvos = will follow

In this sentence, sekvas simply means the action is happening in the present, or is being stated as a general fact.

Because itineron is the direct object of the verb sekvas, and its adjective must agree with it.

• sekvi is a transitive verb: someone or something follows something
• the thing being followed is the direct object
• in Esperanto, direct objects usually take -n

So:

• itinero = itinerary / route
• itineron = itinerary / route as the direct object

And because longa describes itinero, it must match it:

• longa itinero = a long itinerary
• longan itineron = a long itinerary as the direct object

Yes. In Esperanto, adjectives agree with the nouns they describe in both:

• number
• case

That means if the noun is plural, the adjective becomes plural too; if the noun has -n, the adjective gets -n too.

Examples:

• longa itinero = a long itinerary
• longaj itineroj = long itineraries
• longan itineron = a long itinerary (direct object)
• longajn itinerojn = long itineraries (direct object)

In Esperanto, sekvi normally takes a direct object with no preposition.

So:

• sekvi itineron = to follow an itinerary/route
• sekvi iun = to follow someone

You do not need a preposition here. This is very normal Esperanto usage.

Because Esperanto does not require the definite article unless you specifically want the.

So:

• longan itineron = a long itinerary / route, or simply long itinerary/route depending on context
• la longan itineron = the long itinerary / route

In this sentence, the speaker is talking about the excursion, but not necessarily the specific already-known itinerary. That is why only the first noun has la.

There are two clues:

1. ekskurso has no -n, so it is not the direct object.
2. itineron has -n, which marks it as the direct object.

So:

• la ekskurso = the subject, the thing doing the action
• longan itineron = the object, the thing being followed

This is one of the useful things about Esperanto: the -n often makes sentence roles very clear.

Yes. Because Esperanto marks the direct object with -n, word order is more flexible than in English.

For example, these would still mean essentially the same thing:

• La ekskurso sekvas longan itineron.
• Longan itineron sekvas la ekskurso.
• Sekvas la ekskurso longan itineron.

However, the most neutral and common order is still:

• subject + verb + object

So the original sentence is the most straightforward version.

Ekskurso usually means something like:

• excursion
• outing
• trip

The exact English translation depends on context. It often suggests an organized trip, group outing, or planned excursion rather than just any travel in general.

They are related but not identical.

• itinero = itinerary, route, planned course
• vojo = way, road, path

So longan itineron suggests a route or planned itinerary that the excursion follows, not necessarily just a physical road. Depending on context, it could be a route on a map, a travel plan, or a course through several places.

A simple pronunciation guide is:

• eks-KUR-so

A few useful points:

• eks- sounds like eks
• stress in Esperanto is usually on the second-to-last syllable
• so the stress falls on KUR

Likewise:

• sekvas → SEK-vas
• longan → LON-gan
• itineron → i-ti-NE-ron

Yes. The Esperanto present tense -as covers both meanings.

So sekvas can mean:

• follows
• is following

The exact English wording depends on context. Esperanto does not force that distinction in the same way English often does.