This document summarizes the grammatical categories that English verbs can belong to, including: person, tense, phase, aspect, mode, voice, and status. It provides examples to illustrate the different forms verbs take within each category. For example, verbs have two persons - common and third singular - which are marked by inflectional endings that concord with the subject. Verbs also have two tenses - present and past - marked by different inflections. Additionally, verbs can be active or passive in voice, and affirmative, interrogative, negative, or negative-interrogative in status.