Explanation:
The futur simple is a tense thatcanbe used to say something that you want to do that you aven't did yet is like "I will go to the cinema you aven't got to the cinema but your going to.
To form it you need to take the redical of the verb
Exemple: manger (eat)
You take the and you add the ending that correspond to the pronoms :
Je ai
tu as
il/elle/on a
nous ons
vous ez
Ils/elles ont
So for manger it is : je mangerai
tu mangeras
il/elle/on mangera
nous mangerons
vous mangerez
ils/elles mangeront