This document summarizes two grammatical structures involving verbs and the -ing form in English: 1. Some verbs are followed directly by -ing to form verb + -ing constructions like "enjoy swimming" or "consider leaving". 2. Many verbs take a preposition like "about", "for", or "to" followed by a verb in the -ing form, such as "talk about meeting", "apologize for missing", or "look forward to visiting".