
Verbe régulier : lock -  locked - locked
Traduction française : fermer à clef - (se) fermer à clef 
Forme simple | Forme en V-ing | 
| I must lock you must lock he must lock we must lock you must lock they must lock  | I must be locking you must be locking he must be locking we must be locking you must be locking they must be locking  | 
Perfect | Perfect en V-ing | 
| I must have locked you must have locked he must have locked we must have locked you must have locked they must have locked  | I must have been locking you must have been locking he must have been locking we must have been locking you must have been locking they must have been locking  | 
Forme simple | Forme en V-ing | 
| I mustn't lock you mustn't lock he mustn't lock we mustn't lock you mustn't lock they mustn't lock  | I mustn't be locking you mustn't be locking he mustn't be locking we mustn't be locking you mustn't be locking they mustn't be locking  | 
Perfect | Perfect en V-ing | 
| I mustn't have locked you mustn't have locked he mustn't have locked we mustn't have locked you mustn't have locked they mustn't have locked  | I mustn't have been locking you mustn't have been locking he mustn't have been locking we mustn't have been locking you mustn't have been locking they mustn't have been locking  | 
Forme simple | Forme en V-ing | 
| must I lock? must you lock? must he lock? must we lock? must you lock? must they lock?  | must I be locking? must you be locking? must he be locking? must we be locking? must you be locking? must they be locking?  | 
Perfect | Perfect en V-ing | 
| must I have locked? must you have locked? must he have locked? must we have locked? must you have locked? must they have locked?  | must I have been locking? must you have been locking? must he have been locking? must we have been locking? must you have been locking? must they have been locking?  | 
Forme simple | Forme en V-ing | 
| mustn't I lock? mustn't you lock? mustn't he lock? mustn't we lock? mustn't you lock? mustn't they lock?  | mustn't I be locking? mustn't you be locking? mustn't he be locking? mustn't we be locking? mustn't you be locking? mustn't they be locking?  | 
Perfect | Perfect en V-ing | 
| mustn't I have locked? mustn't you have locked? mustn't he have locked? mustn't we have locked? mustn't you have locked? mustn't they have locked?  | mustn't I have been locking? mustn't you have been locking? mustn't he have been locking? mustn't we have been locking? mustn't you have been locking? mustn't they have been locking?  |