The prepositions used in the following sentences are in, across, of, from, to at, and before.
Explanation:
in cats, dogs, and elephants
in some reptiles
across Ortega Bay
of whitewashed stone
from the local stone quy
to the pier
of the island
of the boat
from the mainland
at the stroke of ten
from the mainland
to the residents
on the island
of the passengers on the boat
of the boat to port
from her father
of his
for many years
of his salary
before he retired
for twenty years
of his daughter
in his footsteps
The purpose of a prepositional phrase is to connect different elements of a sentence and show the relationship between them. The only elements they must include are a preposition and an object of the preposition.