The modal verb will is used with a main verb, or an auxiliary verb and a main verb to express the future tense. It is also used to show ideas such as willingness, request, probability, etc.
We will be at the funeral gathering tomorrow. (Future)
Besides being used to show a future action, will indicates a determination to perform the action.
Will is used in the second and third persons (you, he, she, it, they) in asking questions.
The negative and contraction forms of will are won’t.
Will is usually contracted to ’ll when used with a subject pronoun (I, we, you, they, he, she, it):
- It will bark if someone passes by.
The contraction form is not used when something is to be emphasized:
- Without emphasis: I won't do it.
- With emphasis: I will not do it.
We use would as a past tense of will or to express an idea such as a habitual behaviour, possibility, probability, etc.