Verb/vɜːrb/ Definition 1 of 2Pro Tip 1/3Action Clarity Verbs make the action in a sentence clear, showing who is doing what. In 'She sings', 'sings' tells us her action. Pro Tip 2/3Verbs Change Verbs change form to match the subject and the time the action occurs. 'He talks' vs. 'He talked'. Pro Tip 3/3Expressing States Some verbs describe a state of being, not an action. 'I am happy' uses 'am' to express a state.