Questions & Answers about La dentisto metis kronon sur la muelodonton.
Because -is marks the past tense in Esperanto.
- meti = to put, to place
- metas = puts / is putting
- metis = put / placed
So La dentisto metis... means The dentist put/placed...
The -n shows the direct object: the thing directly affected by the action.
In this sentence, the dentist is putting a crown, so kronon is the object of metis.
Compare:
- La dentisto metis kronon. = The dentist put a crown.
- Krono falis. = A crown fell.
Here krono is the subject, so there is no -n.