has

Has is the third-person singular present tense form of the verb have in English. It functions as a main verb to express possession or a characteristic, and as an auxiliary to form perfect tenses and certain other constructions. With singular subjects such as he, she, or it, has agrees with the present tense of have: for example, “She has a new bicycle” or “The report has three sections.”

As an auxiliary, has forms the present perfect: “She has finished.” It can also appear in constructions like “has been” to form the present perfect continuous, as in “He has been studying.” Negation is formed with hasn’t (has not), and questions use subject–auxiliary inversion: “Has she finished?”

Contractions and negation are common in natural speech and writing. The contracted form hasn’t is used for “has not,” and question forms such as “Has she …?” are standard. In some contexts, have to expresses obligation with third-person agreement as “has to” (for example, “She has to leave.”).

Has is also used in certain regional varieties to indicate possession with have got, as in British English: “She has got a new car.” In American English, possession is typically expressed with have or has without got: “She has a new car.”

In sum, has is a versatile form serving both main-verb and auxiliary roles, with clear rules for subject agreement, negation, and question formation, and it participates in several common constructions that connect possession, characteristics, and aspect.