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Questions & Answers about La vojaĝo estas rapida.
Why is la used here before vojaĝo?
In Esperanto, la is the definite article used for any noun, regardless of number or gender. It corresponds to the English the. We use it to indicate a specific journey rather than a general one.
Why is it vojaĝo instead of vojaĝon?
In Esperanto, nouns often end in -o in their basic form (the nominative case), which is used for the subject of a sentence. We would add -n (making vojaĝon) only if vojaĝo were the direct object. Here, it is the subject complement of the verb estas, so we keep the basic form vojaĝo.
What does estas do in this sentence?
Estas is the present-tense form of the verb esti (to be). It connects the subject (la vojaĝo) to its description (rapida), functioning just like is in English.
Why do we use rapida (an adjective) instead of rapide (an adverb)?
Since rapida describes vojaĝo (a noun), we need an adjective. If we were describing how something is done (for instance, if the sentence referred to traveling quickly), we would use the adverb rapide. Here, rapida states that the journey itself is fast.