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
Futuro anteriore
I'll have enthusiasmed you'll have enthusiasmed he'll have enthusiasmed we'll have enthusiasmed you'll have enthusiasmed they'll have enthusiasmed
Futuro anteriore contínuo
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
Passato
I'd have enthusiasmed you'd have enthusiasmed he'd have enthusiasmed we'd have enthusiasmed you'd have enthusiasmed they'd have enthusiasmed
Passato continuo
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