
Verbo regolare: celebrate - celebrated - celebrated
Forma semplice | Forma con V-ing | 
| I could celebrate you could celebrate she could celebrate we could celebrate you could celebrate they could celebrate  | I could be celebrating you could be celebrating she could be celebrating we could be celebrating you could be celebrating they could be celebrating  | 
Perfetto | Perfetto con V-ing | 
| I could have celebrated you could have celebrated she could have celebrated we could have celebrated you could have celebrated they could have celebrated  | I could have been celebrating you could have been celebrating she could have been celebrating we could have been celebrating you could have been celebrating they could have been celebrating  | 
Forma semplice | Forma con V-ing | 
| I couldn't celebrate you couldn't celebrate she couldn't celebrate we couldn't celebrate you couldn't celebrate they couldn't celebrate  | I couldn't be celebrating you couldn't be celebrating she couldn't be celebrating we couldn't be celebrating you couldn't be celebrating they couldn't be celebrating  | 
Perfetto | Perfetto con V-ing | 
| I couldn't have celebrated you couldn't have celebrated she couldn't have celebrated we couldn't have celebrated you couldn't have celebrated they couldn't have celebrated  | I couldn't have been celebrating you couldn't have been celebrating she couldn't have been celebrating we couldn't have been celebrating you couldn't have been celebrating they couldn't have been celebrating  | 
Forma semplice | Forma con V-ing | 
| could I celebrate? could you celebrate? could she celebrate? could we celebrate? could you celebrate? could they celebrate?  | could I be celebrating? could you be celebrating? could she be celebrating? could we be celebrating? could you be celebrating? could they be celebrating?  | 
Perfetto | Perfetto con V-ing | 
| could I have celebrated? could you have celebrated? could she have celebrated? could we have celebrated? could you have celebrated? could they have celebrated?  | could I have been celebrating? could you have been celebrating? could she have been celebrating? could we have been celebrating? could you have been celebrating? could they have been celebrating?  | 
Forma semplice | Forma con V-ing | 
| couldn't I celebrate? couldn't you celebrate? couldn't she celebrate? couldn't we celebrate? couldn't you celebrate? couldn't they celebrate?  | couldn't I be celebrating? couldn't you be celebrating? couldn't she be celebrating? couldn't we be celebrating? couldn't you be celebrating? couldn't they be celebrating?  | 
Perfetto | Perfetto con V-ing | 
| couldn't I have celebrated? couldn't you have celebrated? couldn't she have celebrated? couldn't we have celebrated? couldn't you have celebrated? couldn't they have celebrated?  | couldn't I have been celebrating? couldn't you have been celebrating? couldn't she have been celebrating? couldn't we have been celebrating? couldn't you have been celebrating? couldn't they have been celebrating?  |