There are three ways to pronounce the final -ed ending in words: /t/, /d/, or /id/. The pronunciation depends on whether the last sound of the word is voiceless (/t/) or voiced (/d/). Words ending in /t/ or /d/ take an /id/ pronunciation. There are some exceptions that always take an /id/ sound even if the last sound is voiceless or voiced. The document provides rules, examples, and practice exercises for pronouncing -ed endings correctly in English.