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The simple future refers to a time later than now, and expresses facts or certainty. In this case there is no 'attitude'.

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To predict a future event:
It will rain tomorrow.

With I or We, to express a spontaneous decision:
I'll pay for the tickets by credit card.

To express willingness:
I'll do the washing-up.
He'll carry your bag for you.

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In the negative form, to express unwillingness:

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In the negative form, to express unwillingness:

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The car won't start.

The baby won't eat his soup.

I will not leave until I see the manager!

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With I in the interrogative form using "shall", to make an offer:

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With I in the interrogative form using "shall", to make an offer:

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Shall I open the window?

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With you in the interrogative form, to give an invitation:

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With you in the interrogative form, to give an invitation:

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Will you come to the dance with me?
Will you marry me?

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Note:In modern English will is preferred to shall. Shall is mainly used with I and we to make an offer or suggestion, or to ask for advice (see examples above). With the other persons (you, he, she, they) shall is only used in literary or poetic situations, e.g. "With rings on her fingers and bells on her toes, She shall have music wherever she goes."

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I will = I'll

We will = we'll

You will = you'll

He will = he'll

She will = she'll

They will = they'll

Will not = won't

The form "it will" is not normally shortened.

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*Shall is dated, but it is still commonly used instead of "will" with the affirmative or interrogative forms of I and we in certain cases