Question

What are auxillary verbs ?

Answer 1

a verb used in forming the tenses, moods, and voices of other verbs. The primary auxiliary verbs in English are be, do, and have ; the modal auxiliaries are can, could, may, might, must, shall, should, will, andwould.

Answer 2

Auxiliary (or Helping) verbs are used together with a main verb to show the verb’s tense or to form a negative or question. The most common auxiliary verbs are have, be, and do.

Examples:
a) Does Fatima writes all her own reports?
b) The children haven't written all the letters yet.