
Verbe régulier : act -  acted - acted
Traduction française : agir - jouer 
Forme simple | Forme en V-ing | 
| I must act you must act she must act we must act you must act they must act  | I must be acting you must be acting she must be acting we must be acting you must be acting they must be acting  | 
Perfect | Perfect en V-ing | 
| I must have acted you must have acted she must have acted we must have acted you must have acted they must have acted  | I must have been acting you must have been acting she must have been acting we must have been acting you must have been acting they must have been acting  | 
Forme simple | Forme en V-ing | 
| I mustn't act you mustn't act she mustn't act we mustn't act you mustn't act they mustn't act  | I mustn't be acting you mustn't be acting she mustn't be acting we mustn't be acting you mustn't be acting they mustn't be acting  | 
Perfect | Perfect en V-ing | 
| I mustn't have acted you mustn't have acted she mustn't have acted we mustn't have acted you mustn't have acted they mustn't have acted  | I mustn't have been acting you mustn't have been acting she mustn't have been acting we mustn't have been acting you mustn't have been acting they mustn't have been acting  | 
Forme simple | Forme en V-ing | 
| must I act? must you act? must she act? must we act? must you act? must they act?  | must I be acting? must you be acting? must she be acting? must we be acting? must you be acting? must they be acting?  | 
Perfect | Perfect en V-ing | 
| must I have acted? must you have acted? must she have acted? must we have acted? must you have acted? must they have acted?  | must I have been acting? must you have been acting? must she have been acting? must we have been acting? must you have been acting? must they have been acting?  | 
Forme simple | Forme en V-ing | 
| mustn't I act? mustn't you act? mustn't she act? mustn't we act? mustn't you act? mustn't they act?  | mustn't I be acting? mustn't you be acting? mustn't she be acting? mustn't we be acting? mustn't you be acting? mustn't they be acting?  | 
Perfect | Perfect en V-ing | 
| mustn't I have acted? mustn't you have acted? mustn't she have acted? mustn't we have acted? mustn't you have acted? mustn't they have acted?  | mustn't I have been acting? mustn't you have been acting? mustn't she have been acting? mustn't we have been acting? mustn't you have been acting? mustn't they have been acting?  |