A preposition shows a relationship between ideas in a sentence. Prepositions
usually answer the questions where or when. They often tell the location of a
person or an object in time or space. The preposition usually introduces a phrase
that has several parts: the preposition itself; an article (like a, an, or the); and a
noun which is called the object of the preposition.
Sometimes, there may be a possessive noun, like Steven’s, or a possessive
pronoun, such as her, their, or my, instead of the article. There may also be
adverbs or adjectives in the phrase.
Example: Sylvia’s homework was in her purple backpack.
The prepositional phrase in her purple backpack tells where her homework was.
The word in is the preposition.
The word her is a possessive pronoun.
The word purple is an adjective describing the backpack.
The word backpack is the object of the preposition.
the most commons prepositons are:
of
in
to
for
with
on
at
from
by
about
as
into
like
through
after
over
between
out
against
during
without
before
under
around
among