En la librovendejo vendistino montris al mi novan romanon kun bela titolo.

Esperanto has only one article: la, which means the. It does not have an indefinite article like a or an.

So:

• la librovendejo = the bookstore
• vendistino = a saleswoman / shop assistant
• novan romanon = a new novel

In this sentence, the bookstore is treated as a specific known place, so la is used. The saleswoman and the novel are not marked with any article, which is normal in Esperanto.

Librovendejo is a compound word:

• libr- = book
• vend- = sell
• -ej- = place
• -o = noun ending

So librovendejo literally means a place for selling books, which is why it means bookstore or bookshop.

This is very common in Esperanto: long words are often built from smaller meaningful pieces.

Vendistino can be broken down like this:

• vend- = sell
• -ist- = a person professionally or regularly involved in something
• -in- = female
• -o = noun ending

So vendistino means a female seller, often translated as saleswoman or shop assistant.

Related forms:

• vendisto = seller, salesperson
• vendistino = female seller

Because montri usually works like show in English:

• the thing being shown is the direct object
• the person receiving it is introduced with al = to

So:

• montris al mi novan romanon = showed to me a new novel

Here:

• novan romanon is the thing shown
• al mi is the person it was shown to

If you said min, that would make me the direct object, which would mean something more like showed me in the sense of displayed me, not showed something to me.

Because romanon is the direct object of montris, and in Esperanto direct objects take -n.

Also, adjectives agree with the nouns they describe. Since romanon is:

• singular
• direct object

the adjective must match it:

• nova romano = a new novel
• novan romanon = a new novel as direct object

So both words get the appropriate endings.

Because kun is a preposition, and nouns after prepositions normally do not take the accusative -n.

So:

• kun bela titolo = with a beautiful title

Here titolo is part of a prepositional phrase, not the direct object of the verb. That is why it stays titolo, not titolon.

The adjective also agrees with the noun, so:

• bela titolo, not belan titolon

It most naturally describes novan romanon.

So the structure is understood as:

• a new novel
• with a beautiful title

That is the most sensible reading both grammatically and semantically. In other words, it is the novel that has the beautiful title, not the bookstore or the saleswoman.

Because Esperanto simply does not use an indefinite article.

English says:

• a saleswoman
• a novel

Esperanto just says:

• vendistino
• romano

That can feel strange to English speakers at first, but it is completely normal in Esperanto. Only la exists as an article.

Yes. Esperanto word order is fairly flexible because the endings show what each word is doing.

For example, these are possible with different emphasis:

• Vendistino montris al mi novan romanon en la librovendejo.
• Al mi vendistino montris novan romanon en la librovendejo.
• Novan romanon vendistino montris al mi en la librovendejo.

The original order sounds natural and straightforward, but Esperanto allows movement for emphasis much more easily than English does.

En means in or inside. So en la librovendejo means the action happened in the bookstore.

A different preposition would change the meaning:

• en la librovendejo = in the bookstore
• ĉe la librovendejo = at/by the bookstore, near it, or at that establishment more generally

So en is the natural choice if the speaker means the action took place inside the shop.

Yes. Romano means novel.

That is different from:

• libro = book

So if the sentence uses romanon, it is specifically referring to a novel, not just a book of any kind.

Normally it describes the setting for the whole event: the showing happened there.

So the sentence is understood as:

• the event took place in the bookstore

In practice, that also means the saleswoman was there, of course, but the phrase is best understood as setting the scene for the whole action rather than attaching only to vendistino.

Yes, but the meaning would change slightly.

• vendisto = seller, salesperson
• vendistino = female seller, saleswoman

So if you want to specify that the person was female, vendistino is appropriate. If gender is not important or not specified, many speakers would use vendisto.