they

"They" is most often a third-person plural pronoun. It refers to two or more people, animals, or things. For example: "My friends are coming over; they will be here soon." It is also often used for one person when that person's gender is unknown, not important, or when that person uses "they" as a personal pronoun. For example: "I heard from Alex; they are doing well." In this singular use, English still uses plural verb forms, so we say "they are," not "they is."

"They" is a pronoun with two main uses in modern English. First, it is the usual third-person plural pronoun. In this use, it refers to more than one person, animal, or thing: "The students finished their exams; they were relieved." This is the basic use that learners meet early on.

Second, "they" is also used for one person. This singular use appears when the person's gender is unknown, when the gender does not matter, or when the person chooses "they" as their pronoun. For example: "Someone left their umbrella behind," or "Jordan said they will arrive later." This use is common in everyday English and is accepted in careful, standard writing as well.

Even when it refers to one person, "they" still takes plural verb forms. We say "they are" and "they have," not "they is" or "they has." This is important for learners because the meaning may be singular, but the grammar of the verb stays plural.

Overall, "they" is a flexible and important word. It can point to a group, or to one person in a gender-neutral way. Because of that, it is useful both in ordinary conversation and in polite, respectful communication.