This lesson is for verbs whose future is built on a changed stem. The endings stay the same: -ai, -as, -a, -ons, -ez, -ont.
An irregular stem example
aller builds its future on ir-, which keeps nothing of the infinitive.
aller in Futur Simple
Common stems
| Verb | Stem | je |
|---|---|---|
| aller | ir- | j'irai |
| avoir | aur- | j'aurai |
| être | ser- | je serai |
| faire | fer- | je ferai |
| venir | viendr- | je viendrai |
| voir | verr- | je verrai |
| pouvoir | pourr- | je pourrai |
| devoir | devr- | je devrai |
| savoir | saur- | je saurai |
| vouloir | voudr- | je voudrai |
| envoyer | enverr- | j'enverrai |
Every stem ends in r, changed or not.
Stems with a spelling change
A verb that takes è before a silent ending keeps it through the whole future: acheter → j'achèterai, se lever → je me lèverai.