A preposition is a linking word. It shows the relationship between a noun or pronoun and another word in a sentence. A preposition usually begins with a phrase. For example: tomorrow; until; on the way; to her; to him.
Below are some examples of prepositions and their indications:
Position – in, on, among, under, with
Cause – because, for, since, of
Possession – of
Direction – to, from, up down, into, through
Time – at, about, before, after
A prepositional phrase is a group of words that begins with a preposition and includes a noun or pronoun. The noun or pronoun in the phrase is called the object of the preposition.
Note: An adjective phrase modifies or alters the meaning of a noun or pronoun.
For example: The equestrians from England will ride.
The adjective phrase – from England – modifies the subject – the equestrians.
Note: An adverb phrase modifies a verb, an adjective, or another adverb.
For example: The equestrians from England will ride at the Summer Olympics.
The adverb phrase – at the Summer Olympics – modifies the verb – will ride.