
Verbe régulier : spy -  spied - spied
Traduction française : faire de l'espionnage - apercevoir 
Forme simple | Forme en V-ing | 
| I must spy you must spy he must spy we must spy you must spy they must spy  | I must be spying you must be spying he must be spying we must be spying you must be spying they must be spying  | 
Perfect | Perfect en V-ing | 
| I must have spied you must have spied he must have spied we must have spied you must have spied they must have spied  | I must have been spying you must have been spying he must have been spying we must have been spying you must have been spying they must have been spying  | 
Forme simple | Forme en V-ing | 
| I mustn't spy you mustn't spy he mustn't spy we mustn't spy you mustn't spy they mustn't spy  | I mustn't be spying you mustn't be spying he mustn't be spying we mustn't be spying you mustn't be spying they mustn't be spying  | 
Perfect | Perfect en V-ing | 
| I mustn't have spied you mustn't have spied he mustn't have spied we mustn't have spied you mustn't have spied they mustn't have spied  | I mustn't have been spying you mustn't have been spying he mustn't have been spying we mustn't have been spying you mustn't have been spying they mustn't have been spying  | 
Forme simple | Forme en V-ing | 
| must I spy? must you spy? must he spy? must we spy? must you spy? must they spy?  | must I be spying? must you be spying? must he be spying? must we be spying? must you be spying? must they be spying?  | 
Perfect | Perfect en V-ing | 
| must I have spied? must you have spied? must he have spied? must we have spied? must you have spied? must they have spied?  | must I have been spying? must you have been spying? must he have been spying? must we have been spying? must you have been spying? must they have been spying?  | 
Forme simple | Forme en V-ing | 
| mustn't I spy? mustn't you spy? mustn't he spy? mustn't we spy? mustn't you spy? mustn't they spy?  | mustn't I be spying? mustn't you be spying? mustn't he be spying? mustn't we be spying? mustn't you be spying? mustn't they be spying?  | 
Perfect | Perfect en V-ing | 
| mustn't I have spied? mustn't you have spied? mustn't he have spied? mustn't we have spied? mustn't you have spied? mustn't they have spied?  | mustn't I have been spying? mustn't you have been spying? mustn't he have been spying? mustn't we have been spying? mustn't you have been spying? mustn't they have been spying?  |