Question

10 sentences in future simple

Answer 1

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.In the negative form, to express unwillingness:
The baby won't eat his soup.
I won't leave until I've seen the manager!With I in the interrogative form using "shall", to make an offer:
Shall I open the window?With we in the interrogative form using "shall", to make a suggestion:
Shall we go to the cinema tonight?With I in the interrogative form using "shall", to ask for advice or instructions:
What shall I tell the boss about this money?With you, to give orders:
You will do exactly as I say.With you in the interrogative form, to give an invitation:
Will you come to the dance with me?
Will you marry me?

Answer 2

They will dance all night long.
(Bailarán toda la noche.)

Next month he will be ten years old.
(El mes que viene cumplirá diez años.)

How old will he be next month?
(¿Cuántos años cumplirá el mes que viene?)

It will be very cold in the winter.
(Hará mucho frío en el invierno.)

This winter will not be so cold.
(Este invierno no hará tanto frío.)

I hope you will have a successful trip.
(Espero que tengas un viaje exitoso.)

I hope you will not be disappointed.
(Espero que no te decepciones.)

He won't be late again.
(No volverá a llegar tarde.)

What time will he arrive?
(¿A qué hora llegará?)

She will be very happy when she finds out.
(Se pondrá muy contenta cuando se entere)