I may check you may check he may check we may check you may check they may check
Forma com V-ing
I may be checking you may be checking he may be checking we may be checking you may be checking they may be checking
Perfeito
I may have checked you may have checked he may have checked we may have checked you may have checked they may have checked
Perfeito com V-ing
I may have been checking you may have been checking he may have been checking we may have been checking you may have been checking they may have been checking
Negação
Forma simple
I may not check you may not check he may not check we may not check you may not check they may not check
Forma com V-ing
I may not be checking you may not be checking he may not be checking we may not be checking you may not be checking they may not be checking
Perfeito
I may not have checked you may not have checked he may not have checked we may not have checked you may not have checked they may not have checked
Perfeito com V-ing
I may not have been checking you may not have been checking he may not have been checking we may not have been checking you may not have been checking they may not have been checking
Forma interrogativa
Forma simple
may I check? may you check? may he check? may we check? may you check? may they check?
Forma com V-ing
may I be checking? may you be checking? may he be checking? may we be checking? may you be checking? may they be checking?
Perfeito
may I have checked? may you have checked? may he have checked? may we have checked? may you have checked? may they have checked?
Perfeito com V-ing
may I have been checking? may you have been checking? may he have been checking? may we have been checking? may you have been checking? may they have been checking?
Forma interro-Negação
Forma simple
may I not check? may you not check? may he not check? may we not check? may you not check? may they not check?
Forma com V-ing
may I not be checking? may you not be checking? may he not be checking? may we not be checking? may you not be checking? may they not be checking?
Perfeito
may I not have checked? may you not have checked? may he not have checked? may we not have checked? may you not have checked? may they not have checked?
Perfeito com V-ing
may I not have been checking? may you not have been checking? may he not have been checking? may we not have been checking? may you not have been checking? may they not have been checking?