Learn Hardcore Esperanto: La laboristo interesiĝas pri la urbo.

In Esperanto, la is the definite article, equivalent to the English the. It is invariable—unlike in some languages, it does not change for number or gender. So in this sentence, la laboristo means “the worker.”

How is the word laboristo constructed, and what does it signify?

The word laboristo is built from the root labor- (meaning “work”) combined with the agent suffix -isto, which denotes a person who engages in a particular activity. Hence, laboristo translates to “worker” or “laborer.”

Why does the sentence use the verb interesiĝas instead of a structure with a direct object?

In Esperanto, the verb interesiĝi is intransitive; it means “to take an interest in” or “to become interested.” Because it is intransitive, it does not take a direct object. Instead, it uses the preposition pri to indicate what the subject is interested in. This contrasts with English, where we say “interested in” using a transitive adjective.

What does the preposition pri mean and why is it necessary here?

Pri translates to “about” or “concerning” in English. In this sentence, it links the verb interesiĝas with the noun la urbo, specifying the topic of interest. In Esperanto, many intransitive verbs rely on prepositions like pri to detail the relationship between the action and its subject matter.

How does the ending -as in interesiĝas inform us about the tense of the verb?

The ending -as in Esperanto verbs indicates the present tense. Thus, interesiĝas means that the worker is currently interested in the city. Esperanto verbs are highly regular, and recognizing the -as ending helps learners consistently identify the present tense form.