Learn Hardcore Esperanto: Li manĝas rapide.

In Esperanto, li is the standard masculine third-person singular pronoun. It consistently means he, regardless of being the subject or object in a sentence, simplifying pronoun use compared to English.

Why does the verb end in -as?

In Esperanto, verbs in the present tense always end in -as. For example, manĝas corresponds to the English eats or is eating, so it indicates an ongoing action in the present.

Why is it rapide instead of rapida?

Rapide is an adverb, which in Esperanto typically ends in -e. It describes how the action (eating) is done: quickly. If it were rapida, that would be an adjective describing a noun (e.g., rapida hundo = a fast dog).

Can I change the word order to Li rapide manĝas or Rapide li manĝas?

Yes, Esperanto word order is quite flexible. All these variations basically convey the same idea. Placing rapide at the start (e.g., Rapide li manĝas) can emphasize how he eats, but it doesn't change the core meaning.

Do I need to include an article like la in this sentence?

No, you only use la (the definite article) before nouns when you need to be specific (e.g., la pomo = the apple). Here, li manĝas rapide doesn't involve a noun that needs an article, so you don’t use la.