I may grade you may grade she may grade we may grade you may grade they may grade
Forma con V-ing
I may be grading you may be grading she may be grading we may be grading you may be grading they may be grading
Perfecto
I may have graded you may have graded she may have graded we may have graded you may have graded they may have graded
Perfecto con V-ing
I may have been grading you may have been grading she may have been grading we may have been grading you may have been grading they may have been grading
Negación
Forma simple
I mayn't grade you mayn't grade she mayn't grade we mayn't grade you mayn't grade they mayn't grade
Forma con V-ing
I mayn't be grading you mayn't be grading she mayn't be grading we mayn't be grading you mayn't be grading they mayn't be grading
Perfecto
I mayn't have graded you mayn't have graded she mayn't have graded we mayn't have graded you mayn't have graded they mayn't have graded
Perfecto con V-ing
I mayn't have been grading you mayn't have been grading she mayn't have been grading we mayn't have been grading you mayn't have been grading they mayn't have been grading
Forma interrogativa
Forma simple
may I grade? may you grade? may she grade? may we grade? may you grade? may they grade?
Forma con V-ing
may I be grading? may you be grading? may she be grading? may we be grading? may you be grading? may they be grading?
Perfecto
may I have graded? may you have graded? may she have graded? may we have graded? may you have graded? may they have graded?
Perfecto con V-ing
may I have been grading? may you have been grading? may she have been grading? may we have been grading? may you have been grading? may they have been grading?
Forma interro-negativa
Forma simple
mayn't I grade? mayn't you grade? mayn't she grade? mayn't we grade? mayn't you grade? mayn't they grade?
Forma con V-ing
mayn't I be grading? mayn't you be grading? mayn't she be grading? mayn't we be grading? mayn't you be grading? mayn't they be grading?
Perfecto
mayn't I have graded? mayn't you have graded? mayn't she have graded? mayn't we have graded? mayn't you have graded? mayn't they have graded?
Perfecto con V-ing
mayn't I have been grading? mayn't you have been grading? mayn't she have been grading? mayn't we have been grading? mayn't you have been grading? mayn't they have been grading?