
Verbe régulier : require -  required - required
Traduction française : exiger - nécessiter 
Forme simple | Forme en V-ing | 
| I must require you must require he must require we must require you must require they must require  | I must be requiring you must be requiring he must be requiring we must be requiring you must be requiring they must be requiring  | 
Perfect | Perfect en V-ing | 
| I must have required you must have required he must have required we must have required you must have required they must have required  | I must have been requiring you must have been requiring he must have been requiring we must have been requiring you must have been requiring they must have been requiring  | 
Forme simple | Forme en V-ing | 
| I mustn't require you mustn't require he mustn't require we mustn't require you mustn't require they mustn't require  | I mustn't be requiring you mustn't be requiring he mustn't be requiring we mustn't be requiring you mustn't be requiring they mustn't be requiring  | 
Perfect | Perfect en V-ing | 
| I mustn't have required you mustn't have required he mustn't have required we mustn't have required you mustn't have required they mustn't have required  | I mustn't have been requiring you mustn't have been requiring he mustn't have been requiring we mustn't have been requiring you mustn't have been requiring they mustn't have been requiring  | 
Forme simple | Forme en V-ing | 
| must I require? must you require? must he require? must we require? must you require? must they require?  | must I be requiring? must you be requiring? must he be requiring? must we be requiring? must you be requiring? must they be requiring?  | 
Perfect | Perfect en V-ing | 
| must I have required? must you have required? must he have required? must we have required? must you have required? must they have required?  | must I have been requiring? must you have been requiring? must he have been requiring? must we have been requiring? must you have been requiring? must they have been requiring?  | 
Forme simple | Forme en V-ing | 
| mustn't I require? mustn't you require? mustn't he require? mustn't we require? mustn't you require? mustn't they require?  | mustn't I be requiring? mustn't you be requiring? mustn't he be requiring? mustn't we be requiring? mustn't you be requiring? mustn't they be requiring?  | 
Perfect | Perfect en V-ing | 
| mustn't I have required? mustn't you have required? mustn't he have required? mustn't we have required? mustn't you have required? mustn't they have required?  | mustn't I have been requiring? mustn't you have been requiring? mustn't he have been requiring? mustn't we have been requiring? mustn't you have been requiring? mustn't they have been requiring?  |