The term "split infinitive" refers to the placement of an adverb between "to" and the verb in an infinitive. The use of split infinitives is quite controversial, as many grammarians and writers sanction their use in instances in which avoiding them would result in awkward or confusing syntax. Others believe that split infinitives should never be used under any circumstances and that sentences should be rewritten to avoid their use. Standardized examinations treat split infinitives as errors to be identified and corrected.
Be sure to completely close the window.
The adverb "completely" splits the infinitive "to close." To avoid the use of a split infinitive, move the adverb to the end of the sentence.
Be sure to close the window completely.
One of the most notable instances of the use of a split infinitive is an expression from the opening credits of Star Trek.
Space, the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: To explore strange new worlds. To seek out new life and new civilizations. To boldly go where no man has gone before.
Consider how the flow of the words changes when the syntax is rearranged to avoid the split infinitive:
- to go boldly where no man has gone before
- boldly to go where no man has gone before
Whether to use split infinitives in your own writing is a stylistic decision; however, remember your audience, and modify your syntax to accommodate your reader's view on this topic if your grade may be affected by the use of split infinitives.
