I may knock you may knock she may knock we may knock you may knock they may knock
Forma com V-ing
I may be knocking you may be knocking she may be knocking we may be knocking you may be knocking they may be knocking
Perfeito
I may have knocked you may have knocked she may have knocked we may have knocked you may have knocked they may have knocked
Perfeito com V-ing
I may have been knocking you may have been knocking she may have been knocking we may have been knocking you may have been knocking they may have been knocking
Negação
Forma simple
I may not knock you may not knock she may not knock we may not knock you may not knock they may not knock
Forma com V-ing
I may not be knocking you may not be knocking she may not be knocking we may not be knocking you may not be knocking they may not be knocking
Perfeito
I may not have knocked you may not have knocked she may not have knocked we may not have knocked you may not have knocked they may not have knocked
Perfeito com V-ing
I may not have been knocking you may not have been knocking she may not have been knocking we may not have been knocking you may not have been knocking they may not have been knocking
Forma interrogativa
Forma simple
may I knock? may you knock? may she knock? may we knock? may you knock? may they knock?
Forma com V-ing
may I be knocking? may you be knocking? may she be knocking? may we be knocking? may you be knocking? may they be knocking?
Perfeito
may I have knocked? may you have knocked? may she have knocked? may we have knocked? may you have knocked? may they have knocked?
Perfeito com V-ing
may I have been knocking? may you have been knocking? may she have been knocking? may we have been knocking? may you have been knocking? may they have been knocking?
Forma interro-Negação
Forma simple
may I not knock? may you not knock? may she not knock? may we not knock? may you not knock? may they not knock?
Forma com V-ing
may I not be knocking? may you not be knocking? may she not be knocking? may we not be knocking? may you not be knocking? may they not be knocking?
Perfeito
may I not have knocked? may you not have knocked? may she not have knocked? may we not have knocked? may you not have knocked? may they not have knocked?
Perfeito com V-ing
may I not have been knocking? may you not have been knocking? may she not have been knocking? may we not have been knocking? may you not have been knocking? may they not have been knocking?