Subordinate word groups cannot stand alone. They function only within sentences, usually as adjectives, adverbs, or nouns.
The main types of subordinate word groups are the following:
Prepositional phrases
Verbal phrases (participial, gerund, infinitive)
Appositive phrases
Absolute phrases
Subordinate clauses (adjective, adverb, noun)
Exercises:
Prepositional phrases 1
Prepositional phrases 2
Objects of prepositions
Verbal phrases 1
Verbal phrases 2
Subordinate clauses 1
Subordinate clauses 2
Subjects of subordinate clauses
Phrases and clauses