This document provides information about pronunciation rules for verb endings in English. It explains that verbs ending in voiced sounds like /d/ or /t/ add "-ed" as /id/, while verbs ending in unvoiced sounds add "-ed" as /d/ or /t/ without an extra syllable. Examples are given for both rules to demonstrate how the past tense is pronounced depending on the final sound of the base verb. Instructions are given to practice feeling vibration in the neck to determine if a sound is voiced or unvoiced.