The document discusses the use of verbs that can be followed by either 'to'-infinitive or '-ing' clauses, highlighting that there is often little difference in meaning. It provides specific examples of verbs like 'begin', 'prefer', 'like', 'remember', and 'try', illustrating the nuances in their usage depending on context. Additionally, it clarifies how usage differs when referring to events occurring before or after they happen, and outlines the appropriate sentence structure for these cases.