I may hammer you may hammer he may hammer we may hammer you may hammer they may hammer
V-ing form
I may be hammering you may be hammering he may be hammering we may be hammering you may be hammering they may be hammering
Perfect
I may have hammered you may have hammered he may have hammered we may have hammered you may have hammered they may have hammered
V-ing perfect
I may have been hammering you may have been hammering he may have been hammering we may have been hammering you may have been hammering they may have been hammering
Negation
Simple form
I mayn't hammer you mayn't hammer he mayn't hammer we mayn't hammer you mayn't hammer they mayn't hammer
V-ing form
I mayn't be hammering you mayn't be hammering he mayn't be hammering we mayn't be hammering you mayn't be hammering they mayn't be hammering
Perfect
I mayn't have hammered you mayn't have hammered he mayn't have hammered we mayn't have hammered you mayn't have hammered they mayn't have hammered
V-ing perfect
I mayn't have been hammering you mayn't have been hammering he mayn't have been hammering we mayn't have been hammering you mayn't have been hammering they mayn't have been hammering
Interrogative form
Simple form
may I hammer? may you hammer? may he hammer? may we hammer? may you hammer? may they hammer?
V-ing form
may I be hammering? may you be hammering? may he be hammering? may we be hammering? may you be hammering? may they be hammering?
Perfect
may I have hammered? may you have hammered? may he have hammered? may we have hammered? may you have hammered? may they have hammered?
V-ing perfect
may I have been hammering? may you have been hammering? may he have been hammering? may we have been hammering? may you have been hammering? may they have been hammering?
Interro-negative form
Simple form
mayn't I hammer? mayn't you hammer? mayn't he hammer? mayn't we hammer? mayn't you hammer? mayn't they hammer?
V-ing form
mayn't I be hammering? mayn't you be hammering? mayn't he be hammering? mayn't we be hammering? mayn't you be hammering? mayn't they be hammering?
Perfect
mayn't I have hammered? mayn't you have hammered? mayn't he have hammered? mayn't we have hammered? mayn't you have hammered? mayn't they have hammered?
V-ing perfect
mayn't I have been hammering? mayn't you have been hammering? mayn't he have been hammering? mayn't we have been hammering? mayn't you have been hammering? mayn't they have been hammering?