
Verbe régulier : sightsee - sightseed - sightseed
Forme simple | Forme en V-ing | 
| I may sightsee you may sightsee she may sightsee we may sightsee you may sightsee they may sightsee  | I may be sightseeing you may be sightseeing she may be sightseeing we may be sightseeing you may be sightseeing they may be sightseeing  | 
Perfect | Perfect en V-ing | 
| I may have sightseed you may have sightseed she may have sightseed we may have sightseed you may have sightseed they may have sightseed  | I may have been sightseeing you may have been sightseeing she may have been sightseeing we may have been sightseeing you may have been sightseeing they may have been sightseeing  | 
Forme simple | Forme en V-ing | 
| I mayn't sightsee you mayn't sightsee she mayn't sightsee we mayn't sightsee you mayn't sightsee they mayn't sightsee  | I mayn't be sightseeing you mayn't be sightseeing she mayn't be sightseeing we mayn't be sightseeing you mayn't be sightseeing they mayn't be sightseeing  | 
Perfect | Perfect en V-ing | 
| I mayn't have sightseed you mayn't have sightseed she mayn't have sightseed we mayn't have sightseed you mayn't have sightseed they mayn't have sightseed  | I mayn't have been sightseeing you mayn't have been sightseeing she mayn't have been sightseeing we mayn't have been sightseeing you mayn't have been sightseeing they mayn't have been sightseeing  | 
Forme simple | Forme en V-ing | 
| may I sightsee? may you sightsee? may she sightsee? may we sightsee? may you sightsee? may they sightsee?  | may I be sightseeing? may you be sightseeing? may she be sightseeing? may we be sightseeing? may you be sightseeing? may they be sightseeing?  | 
Perfect | Perfect en V-ing | 
| may I have sightseed? may you have sightseed? may she have sightseed? may we have sightseed? may you have sightseed? may they have sightseed?  | may I have been sightseeing? may you have been sightseeing? may she have been sightseeing? may we have been sightseeing? may you have been sightseeing? may they have been sightseeing?  | 
Forme simple | Forme en V-ing | 
| mayn't I sightsee? mayn't you sightsee? mayn't she sightsee? mayn't we sightsee? mayn't you sightsee? mayn't they sightsee?  | mayn't I be sightseeing? mayn't you be sightseeing? mayn't she be sightseeing? mayn't we be sightseeing? mayn't you be sightseeing? mayn't they be sightseeing?  | 
Perfect | Perfect en V-ing | 
| mayn't I have sightseed? mayn't you have sightseed? mayn't she have sightseed? mayn't we have sightseed? mayn't you have sightseed? mayn't they have sightseed?  | mayn't I have been sightseeing? mayn't you have been sightseeing? mayn't she have been sightseeing? mayn't we have been sightseeing? mayn't you have been sightseeing? mayn't they have been sightseeing?  |