Auxiliary verbs are helping verbs. They help other verb both affirmative and negative sentence, meaning they are not use alone in sentence. They are also used to ask question.
PRIMARY AUXILIARY
They are used with other verb to show tense and number in sentence. They include be, am, is, was, were, being, been, has, have, having, had, do, does, doing, did, and done.
MODAL AUXILILARY
They are used with other verb to change their meaning. They express idea such as Possibility, Intensity, or Permission. E.g. can, shall, should, will, would, may, mighty, must, ought to, dare, need, used, to, and had better.
In ordinary sentence, shall goes with I, and we to indicate the future tense e.g. I shall eat the food.
We shall travel tomorrow.
WILL: goes with: He, She, You, They, it. Example
He will come here today
She will write the letter
You will buy the book
They will go to Abuja
It will fly away
For Request
- Can I please come in?
- Will you come home with me?
- Shall will go?
- Will you please close the Door?
- Can I eat the food?
See also