I must grade you must grade she must grade we must grade you must grade they must grade
Forma com V-ing
I must be grading you must be grading she must be grading we must be grading you must be grading they must be grading
Perfeito
I must have graded you must have graded she must have graded we must have graded you must have graded they must have graded
Perfeito com V-ing
I must have been grading you must have been grading she must have been grading we must have been grading you must have been grading they must have been grading
Negação
Forma simple
I mustn't grade you mustn't grade she mustn't grade we mustn't grade you mustn't grade they mustn't grade
Forma com V-ing
I mustn't be grading you mustn't be grading she mustn't be grading we mustn't be grading you mustn't be grading they mustn't be grading
Perfeito
I mustn't have graded you mustn't have graded she mustn't have graded we mustn't have graded you mustn't have graded they mustn't have graded
Perfeito com V-ing
I mustn't have been grading you mustn't have been grading she mustn't have been grading we mustn't have been grading you mustn't have been grading they mustn't have been grading
Forma interrogativa
Forma simple
must I grade? must you grade? must she grade? must we grade? must you grade? must they grade?
Forma com V-ing
must I be grading? must you be grading? must she be grading? must we be grading? must you be grading? must they be grading?
Perfeito
must I have graded? must you have graded? must she have graded? must we have graded? must you have graded? must they have graded?
Perfeito com V-ing
must I have been grading? must you have been grading? must she have been grading? must we have been grading? must you have been grading? must they have been grading?
Forma interro-Negação
Forma simple
mustn't I grade? mustn't you grade? mustn't she grade? mustn't we grade? mustn't you grade? mustn't they grade?
Forma com V-ing
mustn't I be grading? mustn't you be grading? mustn't she be grading? mustn't we be grading? mustn't you be grading? mustn't they be grading?
Perfeito
mustn't I have graded? mustn't you have graded? mustn't she have graded? mustn't we have graded? mustn't you have graded? mustn't they have graded?
Perfeito com V-ing
mustn't I have been grading? mustn't you have been grading? mustn't she have been grading? mustn't we have been grading? mustn't you have been grading? mustn't they have been grading?