Le futur simple
The future simple (le futur simple), is used to discuss what will happen in the future. Regular verbs in future tense usually have the entire infinitive verb but lose the letter “e” from the ending of the infinitive and add the ending of the verbe to have (avoir). Irregular verbs in future tense have an irregular future stem. That means they do not use their infinitives as the stem for the future tense.
French grammar about future tense. Click on the button of your interest:
Postériotité
In future tense it helps if you add these words to express future: