A verb is a word which says something about action, occurrence or state of being. Verbs are inflected (modified in form) to encode tense, aspect, mood, and voice. A verb may also agree with the person, gender, and/or number of some of its arguments, such as its subject or object. Verbs have tenses: present - to indicate that an action is being carried out; past - to indicate that an action has been done; future - to indicate that an action will / shall be done.