DO definition: to perform (an act, duty, role, etc.). See examples of do used in a sentence. To perform an action, task, or duty; to bring about or accomplish something. You use 'do' constantly in daily conversations, from asking about someone's activities to describing your own. It can refer to a wide range of actions, both specific and general. Feasible comes from faire, the French verb meaning “to do.” Doable and feasible therefore originally meant literally the same thing: “capable of being done.” As a verb, do means to perform, carry out, or execute an action. It's one of the most common verbs in English, used in a wide range of contexts, from simple tasks to complex actions. When you do something, you take some action or perform an activity or task. Do is often used instead of a more specific verb, to talk about a common action involving a particular thing. When you do something, you take some action or perform an activity or task. Do is often used instead of a more specific verb, to talk about a common action involving a particular thing. Today, you'll learn how to use DO, DOES, DID, and DONE in English. Improve your English fluency by learning everything you need to know about the verb TO DO - Complete English Grammar. DO definition: 1. used with another verb to form questions and negative phrases: 2. used in a phrase at the end…. Learn more. Do is one of three auxiliary verbs in English: be, do, have. We use do to make negatives (do + not), to make question forms, and to make the verb more emphatic. … do是一个英文单词，读音是 [duː , də , də] ，具有多种词性和词义。 构成疑问句和否定句。 代替动词。 用于加强语气。 有 做、干、进行、表现、的确 等意思。.