Phrases and Their Functions

A phrase is a group of words that functions as a unit but does not normally contain a complete subject–finite-verb relationship.

Phrases can perform many grammatical functions within sentences.

Noun Phrases

A noun phrase is centered on a noun or pronoun:

the book
a very intelligent student
my new English teacher

A noun phrase can function as a subject, object, or complement:

The new student arrived.
I met the new student.
She is the new student.

Verb Phrases

A verb phrase consists of a main verb together with any auxiliary verbs:

works
is working
has finished
will have completed

For example:

She has been studying English.

The complete verb phrase is has been studying.

Adjective Phrases

An adjective phrase is centered on an adjective:

very happy
extremely difficult to understand
proud of his achievement

It can function as a complement or modifier:

She is very happy.
He was proud of his achievement.

Adverb Phrases

An adverb phrase is centered on an adverb:

very quickly
quite carefully
extremely well

She completed the task very quickly.

Prepositional Phrases

A prepositional phrase consists of a preposition followed by its complement:

in the room
on the table
after the meeting
with great care

Prepositional phrases can function as modifiers or adverbials:

The book on the table is mine.
She arrived after the meeting.

Participial and Infinitive Phrases

English also uses non-finite phrases:

Walking through the park, she saw an old friend.
He went to the library to study.

These structures allow writers to express relationships between ideas economically.

The ability to recognize phrases is essential because phrases are the intermediate building blocks between individual words and complete clauses.