Question

What's the difference between 'will' and 'shall'?

'would' and 'should'?

'would be' and 'should be'?

Answer 1

will means it will be done surely.
and shall means means experting a strong intention.
I hope it helps
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Answer 2

‘Shall’ or ‘will’?...................

The traditional rule is that shall is used with first person pronouns (i.e. I and we) to form the future tense, while will is used with second and third person forms (i.e. you, he, she, it, they). For example:

I shall be late.

They will not have enough food.

However, when it comes to expressing a strong determination to do something, the roles are reversed: will is used with the first person, and shall with the second and third. For example:

I will not tolerate such behaviour.

You shall go to the ball!

In practice, though, the two words are used more or less interchangeably, and this is now an acceptable part of standard British and American English; however, the word shall is now seldom used in any normal context in American English.

DIFFERENCE BETWEEN WOULD AND SHOULD..............

Difference Between Would and Should. By its strictest definition, “would” is the past tense verb form of the word “will” while “should” is the past tense verb form of “shall.” However, this should not limit their roles in sentences as they can be used as modal verbs and auxiliary verbs that make them quite tricky.

DIFFERENCE BETWEEN WOULD BE AND SHOULD BE....................

Should be is ADVICE. Could be is possible. Would be is  a dream. You should be more careful. You could be rich if you worked hard. It would be amazing to be able to fly.One more thing to add on. Use should be when you are saying that someone is supposed to happen. For example, "My keys should be right here." In that sentence you are saying that the keys are supposed to be there.