
Verbe irrégulier : undergo - underwent - undergone
Traduction française : subir - éprouver 
Forme simple | Forme en V-ing | 
| I may undergo you may undergo he may undergo we may undergo you may undergo they may undergo  | I may be undergoing you may be undergoing he may be undergoing we may be undergoing you may be undergoing they may be undergoing  | 
Perfect | Perfect en V-ing | 
| I may have undergone you may have undergone he may have undergone we may have undergone you may have undergone they may have undergone  | I may have been undergoing you may have been undergoing he may have been undergoing we may have been undergoing you may have been undergoing they may have been undergoing  | 
Forme simple | Forme en V-ing | 
| I mayn't undergo you mayn't undergo he mayn't undergo we mayn't undergo you mayn't undergo they mayn't undergo  | I mayn't be undergoing you mayn't be undergoing he mayn't be undergoing we mayn't be undergoing you mayn't be undergoing they mayn't be undergoing  | 
Perfect | Perfect en V-ing | 
| I mayn't have undergone you mayn't have undergone he mayn't have undergone we mayn't have undergone you mayn't have undergone they mayn't have undergone  | I mayn't have been undergoing you mayn't have been undergoing he mayn't have been undergoing we mayn't have been undergoing you mayn't have been undergoing they mayn't have been undergoing  | 
Forme simple | Forme en V-ing | 
| may I undergo? may you undergo? may he undergo? may we undergo? may you undergo? may they undergo?  | may I be undergoing? may you be undergoing? may he be undergoing? may we be undergoing? may you be undergoing? may they be undergoing?  | 
Perfect | Perfect en V-ing | 
| may I have undergone? may you have undergone? may he have undergone? may we have undergone? may you have undergone? may they have undergone?  | may I have been undergoing? may you have been undergoing? may he have been undergoing? may we have been undergoing? may you have been undergoing? may they have been undergoing?  | 
Forme simple | Forme en V-ing | 
| mayn't I undergo? mayn't you undergo? mayn't he undergo? mayn't we undergo? mayn't you undergo? mayn't they undergo?  | mayn't I be undergoing? mayn't you be undergoing? mayn't he be undergoing? mayn't we be undergoing? mayn't you be undergoing? mayn't they be undergoing?  | 
Perfect | Perfect en V-ing | 
| mayn't I have undergone? mayn't you have undergone? mayn't he have undergone? mayn't we have undergone? mayn't you have undergone? mayn't they have undergone?  | mayn't I have been undergoing? mayn't you have been undergoing? mayn't he have been undergoing? mayn't we have been undergoing? mayn't you have been undergoing? mayn't they have been undergoing?  |