
Verbe régulier : knock -  knocked - knocked
Traduction française : frapper (à la porte) 
Forme simple | Forme en V-ing | 
| I must knock you must knock she must knock we must knock you must knock they must knock  | I must be knocking you must be knocking she must be knocking we must be knocking you must be knocking they must be knocking  | 
Perfect | Perfect en V-ing | 
| I must have knocked you must have knocked she must have knocked we must have knocked you must have knocked they must have knocked  | I must have been knocking you must have been knocking she must have been knocking we must have been knocking you must have been knocking they must have been knocking  | 
Forme simple | Forme en V-ing | 
| I mustn't knock you mustn't knock she mustn't knock we mustn't knock you mustn't knock they mustn't knock  | I mustn't be knocking you mustn't be knocking she mustn't be knocking we mustn't be knocking you mustn't be knocking they mustn't be knocking  | 
Perfect | Perfect en V-ing | 
| I mustn't have knocked you mustn't have knocked she mustn't have knocked we mustn't have knocked you mustn't have knocked they mustn't have knocked  | I mustn't have been knocking you mustn't have been knocking she mustn't have been knocking we mustn't have been knocking you mustn't have been knocking they mustn't have been knocking  | 
Forme simple | Forme en V-ing | 
| must I knock? must you knock? must she knock? must we knock? must you knock? must they knock?  | must I be knocking? must you be knocking? must she be knocking? must we be knocking? must you be knocking? must they be knocking?  | 
Perfect | Perfect en V-ing | 
| must I have knocked? must you have knocked? must she have knocked? must we have knocked? must you have knocked? must they have knocked?  | must I have been knocking? must you have been knocking? must she have been knocking? must we have been knocking? must you have been knocking? must they have been knocking?  | 
Forme simple | Forme en V-ing | 
| mustn't I knock? mustn't you knock? mustn't she knock? mustn't we knock? mustn't you knock? mustn't they knock?  | mustn't I be knocking? mustn't you be knocking? mustn't she be knocking? mustn't we be knocking? mustn't you be knocking? mustn't they be knocking?  | 
Perfect | Perfect en V-ing | 
| mustn't I have knocked? mustn't you have knocked? mustn't she have knocked? mustn't we have knocked? mustn't you have knocked? mustn't they have knocked?  | mustn't I have been knocking? mustn't you have been knocking? mustn't she have been knocking? mustn't we have been knocking? mustn't you have been knocking? mustn't they have been knocking?  |