14. English - Grammar Guide 1: Mastering Possessive Determiners with Gerunds

Mastering possessive determiners with gerunds is a crucial aspect of advanced English grammar. A very common mistake learners make is using an object pronoun or a noun in the objective case right before a gerund, instead of a possessive determiner. For example, people often incorrectly say I was annoyed at him leaving early, when the formal and grammatically correct structure requires the possessive form, such as his leaving early. This rule applies because the gerund functions as a noun, and the preceding word acts to modify it. Paying attention to this subtle detail significantly improves formal writing and professional communication.