Intransitive Verbs (netransitivaj verboj).
162. An intransitive verb expresses an action confined to the actor, as:—Johano dormas = John sleeps, or, is sleeping. Intransitive verbs have therefore no object and no passive voice.
Auxiliary Verb (helpa verbo).
163. There is but one auxiliary verb in Esperanto, esti = to be. This verb is used to form the passive voice, and also all the compound tenses of the active voice. The verb havi = to have is in no sense an auxiliary, but is an ordinary active verb denoting ownership, and governing the accusative case, as: Mi havas libron = I have a book.
In Esperanto the following and other verbs are often used where English would usually employ "to be," viz., kuŝi = to lie; sidi = to be situate; sin trovi = to find oneself; troviĝi = to be found; stari = to stand; farti, or, stati = to be (well or ill).
Examples.—La krajono kuŝas (estas) sur la tablo = The pencil is (lies) on the table. Sur la kameno staris (estis) fera kaldrono, en kiu sin trovis (estis) bolanta akvo; tra la fenestro, kiu sin trovis (estis) apud la pordo, la vaporo iris sur la korton = On the hearth was (stood) an iron kettle, in which was (found itself) boiling water; through the window, which was near the door, steam went out into (on to) the yard. Kiel statas via tuso? = How is your cough?
Impersonal Use of Verbs.
164. Verbs used impersonally (senpersone) express a fact or action without indicating any person as the subject or actor. In English they are used only in the third person singular, preceded by "it," but in Esperanto they are entirely impersonal. The following are cases of their impersonal use:—
(a). Verbs which relate to the weather.
Examples.—Pluvas = It rains. Pluvos = It will rain. Fulmis = It lightened. Neĝus = It would snow. Hajlis = It hailed.