In linguistics a word used to form tenses voices and moods of other words?

In linguistics, the word used to form tenses, voices, and moods of other words is called an auxiliary verb.

Here's why:

* Tenses: Auxiliary verbs like "have," "be," and "do" help create different tenses (past, present, future). For example: "I have seen the movie" (present perfect), "They are playing" (present continuous), "She will go" (future).

* Voices: In English, the passive voice is formed using the auxiliary verb "be" along with the past participle of the main verb. For example, "The ball was thrown" (passive).

* Moods: Auxiliary verbs can also contribute to expressing different moods, like the indicative (statements), the interrogative (questions), and the imperative (commands). For example: "He is happy" (indicative), "Do you like it?" (interrogative), "Go now!" (imperative).

Therefore, auxiliary verbs play a crucial role in shaping the grammatical structure and meaning of sentences.