I may prevent you may prevent he may prevent we may prevent you may prevent they may prevent
Forme en V-ing
I may be preventing you may be preventing he may be preventing we may be preventing you may be preventing they may be preventing
Perfect
I may have prevented you may have prevented he may have prevented we may have prevented you may have prevented they may have prevented
Perfect en V-ing
I may have been preventing you may have been preventing he may have been preventing we may have been preventing you may have been preventing they may have been preventing
Négation
Forme simple
I mayn't prevent you mayn't prevent he mayn't prevent we mayn't prevent you mayn't prevent they mayn't prevent
Forme en V-ing
I mayn't be preventing you mayn't be preventing he mayn't be preventing we mayn't be preventing you mayn't be preventing they mayn't be preventing
Perfect
I mayn't have prevented you mayn't have prevented he mayn't have prevented we mayn't have prevented you mayn't have prevented they mayn't have prevented
Perfect en V-ing
I mayn't have been preventing you mayn't have been preventing he mayn't have been preventing we mayn't have been preventing you mayn't have been preventing they mayn't have been preventing
Forme interrogative
Forme simple
may I prevent? may you prevent? may he prevent? may we prevent? may you prevent? may they prevent?
Forme en V-ing
may I be preventing? may you be preventing? may he be preventing? may we be preventing? may you be preventing? may they be preventing?
Perfect
may I have prevented? may you have prevented? may he have prevented? may we have prevented? may you have prevented? may they have prevented?
Perfect en V-ing
may I have been preventing? may you have been preventing? may he have been preventing? may we have been preventing? may you have been preventing? may they have been preventing?
Forme interro-négative
Forme simple
mayn't I prevent? mayn't you prevent? mayn't he prevent? mayn't we prevent? mayn't you prevent? mayn't they prevent?
Forme en V-ing
mayn't I be preventing? mayn't you be preventing? mayn't he be preventing? mayn't we be preventing? mayn't you be preventing? mayn't they be preventing?
Perfect
mayn't I have prevented? mayn't you have prevented? mayn't he have prevented? mayn't we have prevented? mayn't you have prevented? mayn't they have prevented?
Perfect en V-ing
mayn't I have been preventing? mayn't you have been preventing? mayn't he have been preventing? mayn't we have been preventing? mayn't you have been preventing? mayn't they have been preventing?