When the subject of your sentence is a third person singular subject or pronoun (he, she, it), you should always use has. Have, on the other hand, can be used with both first and second person subjects (I, we, you, they). The meaning of HAS is present tense third-person singular of have. Learn the simple rules for using has and have correctly. Master this essential English grammar with clear explanations and practice exercises. HAS definition: a 3rd person singular present indicative of have. See examples of has used in a sentence. HAS definition: 1. he/she/it form of have 2. he/she/it form of have 3. have, used with he/she/it. Learn more. Whether you use have or has depends on the point of view you are using. Luckily, you only use has when talking in the third-person singular (that’s grammar jargon for using he, she, or it in a sentence). Learn when to use has or have with simple rules, examples, tables, trends, and tips for clear English writing.