
Verbe régulier : amass -  amassed - amassed
Traduction française : amasser - accumuler 
Forme simple | Forme en V-ing | 
| I must amass you must amass she must amass we must amass you must amass they must amass  | I must be amassing you must be amassing she must be amassing we must be amassing you must be amassing they must be amassing  | 
Perfect | Perfect en V-ing | 
| I must have amassed you must have amassed she must have amassed we must have amassed you must have amassed they must have amassed  | I must have been amassing you must have been amassing she must have been amassing we must have been amassing you must have been amassing they must have been amassing  | 
Forme simple | Forme en V-ing | 
| I mustn't amass you mustn't amass she mustn't amass we mustn't amass you mustn't amass they mustn't amass  | I mustn't be amassing you mustn't be amassing she mustn't be amassing we mustn't be amassing you mustn't be amassing they mustn't be amassing  | 
Perfect | Perfect en V-ing | 
| I mustn't have amassed you mustn't have amassed she mustn't have amassed we mustn't have amassed you mustn't have amassed they mustn't have amassed  | I mustn't have been amassing you mustn't have been amassing she mustn't have been amassing we mustn't have been amassing you mustn't have been amassing they mustn't have been amassing  | 
Forme simple | Forme en V-ing | 
| must I amass? must you amass? must she amass? must we amass? must you amass? must they amass?  | must I be amassing? must you be amassing? must she be amassing? must we be amassing? must you be amassing? must they be amassing?  | 
Perfect | Perfect en V-ing | 
| must I have amassed? must you have amassed? must she have amassed? must we have amassed? must you have amassed? must they have amassed?  | must I have been amassing? must you have been amassing? must she have been amassing? must we have been amassing? must you have been amassing? must they have been amassing?  | 
Forme simple | Forme en V-ing | 
| mustn't I amass? mustn't you amass? mustn't she amass? mustn't we amass? mustn't you amass? mustn't they amass?  | mustn't I be amassing? mustn't you be amassing? mustn't she be amassing? mustn't we be amassing? mustn't you be amassing? mustn't they be amassing?  | 
Perfect | Perfect en V-ing | 
| mustn't I have amassed? mustn't you have amassed? mustn't she have amassed? mustn't we have amassed? mustn't you have amassed? mustn't they have amassed?  | mustn't I have been amassing? mustn't you have been amassing? mustn't she have been amassing? mustn't we have been amassing? mustn't you have been amassing? mustn't they have been amassing?  |