This document discusses the differences between using -ing, to infinitive, and zero infinitive forms after verbs and expressions in English. It provides examples of when to use each form and notes that in some cases the choice does not change the meaning, while in other cases it does impact the intended meaning. Key verbs like remember, forget, regret can take either -ing or to infinitives but with a change in meaning regarding the timing of the action. More examples and practice with these forms are available at the provided blog link.