Will/Won't/Shall
Shall
We use shall in questions to make:
Offers
Suggestion
Shall we ask for the bill?
Shall we leave?
Let’s go to the cinema, shall we?
Ask for suggestion
What shall we do today?
Where shall we go?
What shall I wear
Reply to offers with Yes, please/ No, thanks. NOT YES, YOU SHALL/ NO, YOU SHALL
Will
Subject+Auxiliary verb(WILL('ll))+Principal verb+Complement
Example

I will be a good student.

I will buy a car soon.

She will become a lawyer.
Auxiliary verb(Will)+Subject+Principal verb+Complement+?
Example

Will he buy the newspaper?
Yes, he will buy the newspaper.

Will they study for exam? Yes, they will study for

Will we go to the cinema? Yes, we will go to the cinema
We use will and won't to:
Make promises
Make decisions while
Summary
Make offers and promises
Won't
Subject+Will+Not(Won't)+Main verb+Complement
Example
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She won’t play with the baby

Karla won't sing in the Music classroom
She don't want to visit ambato.