In GMAT sentences, look closely for split infinitives. An infinitive is the plural form of an action verb, preceded by the word “to.” If to is separated from its corresponding verb, then you’re dealing with a “split infinitive” and the sentence is grammatically incorrect. improper (split): The executive was compelled to, by greed and ambition, work more and more hours each day. correct: The executive was compelled by greed and ambition to work more and more hours each day. improper (split): Meteorologists have been known to inaccurately predict snowstorms. correct: Meteorologists have been known to predict snowstorms inaccurately. Now,.