I've been enthusiasming you've been enthusiasming he's been enthusiasming we've been enthusiasming you've been enthusiasming they've been enthusiasming
I'll be enthusiasming you'll be enthusiasming he'll be enthusiasming we'll be enthusiasming you'll be enthusiasming they'll be enthusiasming
Futur antérieur
I'll have enthusiasmed you'll have enthusiasmed he'll have enthusiasmed we'll have enthusiasmed you'll have enthusiasmed they'll have enthusiasmed
Futur antérieur continu
I'll have been enthusiasming you'll have been enthusiasming he'll have been enthusiasming we'll have been enthusiasming you'll have been enthusiasming they'll have been enthusiasming
I'd be enthusiasming you'd be enthusiasming he'd be enthusiasming we'd be enthusiasming you'd be enthusiasming they'd be enthusiasming
Passé
I'd have enthusiasmed you'd have enthusiasmed he'd have enthusiasmed we'd have enthusiasmed you'd have enthusiasmed they'd have enthusiasmed
Passé continu
I'd have been enthusiasming you'd have been enthusiasming he'd have been enthusiasming we'd have been enthusiasming you'd have been enthusiasming they'd have been enthusiasming