Questions & Answers about Ni ĉeestas la prelegon en la observatorio.
Because ĉeesti is a transitive verb in Esperanto. It takes a direct object.
- ĉeesti = to attend, to be present at
- So the thing being attended gets -n
- la prelegon = the lecture as the direct object
That is why Esperanto says:
- Ni ĉeestas la prelegon. = We are attending the lecture.
Even though English uses attend without a special ending, Esperanto shows the object clearly with -n.
Ĉeestas comes from ĉeesti.
It means:
- to attend
- to be present at
- to be in attendance at
So Ni ĉeestas la prelegon means that we are present at the lecture / we are attending the lecture.
A useful point: Esperanto uses ĉeesti as a single verb, where English often uses a verb plus a preposition, such as be present at.