What kind of grammar construction is a split infinitive?

A split infinitive is a grammatical construction where an adverb (or other modifier) is placed between the to and the verb of an infinitive.

It's not a distinct grammatical construction itself, but rather a specific placement of words within an infinitive phrase.

Here's a breakdown:

* Infinitive: The basic form of a verb, usually preceded by "to" (e.g., to run, to sing, to eat).

* Split Infinitive: An infinitive where a word or phrase is inserted between "to" and the verb (e.g., to boldly go, to quickly eat).

Example:

* Correct: "I want to go home."

* Split Infinitive: "I want to boldly go home."

While split infinitives are often considered grammatically incorrect, they are sometimes used for emphasis or stylistic effect.