An infinitive consists of the word βtoβ plus a verb ("to be," "to have," "to run," "to buy" etc); it may be used as a noun, adjective or adverb. An infinitive phrase is a group of words consisting of an infinitive, a modifier or the use of pronouns, direct objects, indirect objects or complements of action or state expressed in the infinitive.
Writing Tips:
- Donβt confuse an infinitive with a prepositional phrase beginning with βto.β Prepositional phrases consist of βtoβ plus a noun, pronoun or any modifiers.
Infinitives include: to become, to enter, to draw, etc.
Prepositional phrases include: to him, to this address, to the mountains, to my house, etc.
- An infinitive phrase uses an infinitive plus a modifier, object, complement or actor. There can be more than one of these and they may not all be present in the phrase.
- Infinitive phrases only require a comma when used as an adverb at the beginning of the sentence.
Examples:
- βTo wait seemed foolish when decisive action was needed.β βsubject
- βEveryone wanted to go.β βdirect object
Revising:
Does your infinitive phrase have additional words between βtoβ and the verb? If so, itβs a split infinitive. In some cases, itβs acceptable (βTo boldy go where no man has gone beforeβ), but it generally should be avoided in formal papers.
- Informal papers: I needed to quickly gather my school supplies.
- Formal Papers: I needed to gather my school supplies quickly.