I will write the letter.
Escribiré la carta.
He will tell me tomorrow.
Él me dirá mañana.
She will know the truth tomorrow. (la verdad-truth)
Ella sabrá la verdad mañana.
I will leave at 8 in the morning.
Saldré a las ocho de la mañana.
you guys will win (you all familiar)
ganaréis
She will see me.
Ella me verá.
They will run
correrán
He will go
irá
She will do her homework.
Ella hará su tarea.
They will make food.
Ellos harán comida.
She will put the book under the desk.
Ella pondrá el libro debajo del pupitre.
I will dance with you.
Bailaré contigo.
I will see you tomorrow.
Yo te veré mañana.
They will have fun! (divertirse)
Ellos se divertirán
You will work a lot. (you familiar)
Trabajarás mucho.