
Verbo regolare: prevent - prevented - prevented
Forma semplice | Forma con V-ing | 
| I may prevent you may prevent she may prevent we may prevent you may prevent they may prevent  | I may be preventing you may be preventing she may be preventing we may be preventing you may be preventing they may be preventing  | 
Perfetto | Perfetto con V-ing | 
| I may have prevented you may have prevented she may have prevented we may have prevented you may have prevented they may have prevented  | I may have been preventing you may have been preventing she may have been preventing we may have been preventing you may have been preventing they may have been preventing  | 
Forma semplice | Forma con V-ing | 
| I mayn't prevent you mayn't prevent she mayn't prevent we mayn't prevent you mayn't prevent they mayn't prevent  | I mayn't be preventing you mayn't be preventing she mayn't be preventing we mayn't be preventing you mayn't be preventing they mayn't be preventing  | 
Perfetto | Perfetto con V-ing | 
| I mayn't have prevented you mayn't have prevented she mayn't have prevented we mayn't have prevented you mayn't have prevented they mayn't have prevented  | I mayn't have been preventing you mayn't have been preventing she mayn't have been preventing we mayn't have been preventing you mayn't have been preventing they mayn't have been preventing  | 
Forma semplice | Forma con V-ing | 
| may I prevent? may you prevent? may she prevent? may we prevent? may you prevent? may they prevent?  | may I be preventing? may you be preventing? may she be preventing? may we be preventing? may you be preventing? may they be preventing?  | 
Perfetto | Perfetto con V-ing | 
| may I have prevented? may you have prevented? may she have prevented? may we have prevented? may you have prevented? may they have prevented?  | may I have been preventing? may you have been preventing? may she have been preventing? may we have been preventing? may you have been preventing? may they have been preventing?  | 
Forma semplice | Forma con V-ing | 
| mayn't I prevent? mayn't you prevent? mayn't she prevent? mayn't we prevent? mayn't you prevent? mayn't they prevent?  | mayn't I be preventing? mayn't you be preventing? mayn't she be preventing? mayn't we be preventing? mayn't you be preventing? mayn't they be preventing?  | 
Perfetto | Perfetto con V-ing | 
| mayn't I have prevented? mayn't you have prevented? mayn't she have prevented? mayn't we have prevented? mayn't you have prevented? mayn't they have prevented?  | mayn't I have been preventing? mayn't you have been preventing? mayn't she have been preventing? mayn't we have been preventing? mayn't you have been preventing? mayn't they have been preventing?  |