MSN: Why Do Cats Put Their Butt in Your Face? Experts Explain Weโ€™ve put together a guide to help you use do, does, and did as action and auxiliary verbs in the simple past and present tenses. does in British English (dสŒz ) verb (used with a singular noun or the pronouns he, she, or it) a form of the present tense (indicative mood) of do 1