I must mark you must mark she must mark we must mark you must mark they must mark
Forma com V-ing
I must be marking you must be marking she must be marking we must be marking you must be marking they must be marking
Perfeito
I must have marked you must have marked she must have marked we must have marked you must have marked they must have marked
Perfeito com V-ing
I must have been marking you must have been marking she must have been marking we must have been marking you must have been marking they must have been marking
Negação
Forma simple
I mustn't mark you mustn't mark she mustn't mark we mustn't mark you mustn't mark they mustn't mark
Forma com V-ing
I mustn't be marking you mustn't be marking she mustn't be marking we mustn't be marking you mustn't be marking they mustn't be marking
Perfeito
I mustn't have marked you mustn't have marked she mustn't have marked we mustn't have marked you mustn't have marked they mustn't have marked
Perfeito com V-ing
I mustn't have been marking you mustn't have been marking she mustn't have been marking we mustn't have been marking you mustn't have been marking they mustn't have been marking
Forma interrogativa
Forma simple
must I mark? must you mark? must she mark? must we mark? must you mark? must they mark?
Forma com V-ing
must I be marking? must you be marking? must she be marking? must we be marking? must you be marking? must they be marking?
Perfeito
must I have marked? must you have marked? must she have marked? must we have marked? must you have marked? must they have marked?
Perfeito com V-ing
must I have been marking? must you have been marking? must she have been marking? must we have been marking? must you have been marking? must they have been marking?
Forma interro-Negação
Forma simple
mustn't I mark? mustn't you mark? mustn't she mark? mustn't we mark? mustn't you mark? mustn't they mark?
Forma com V-ing
mustn't I be marking? mustn't you be marking? mustn't she be marking? mustn't we be marking? mustn't you be marking? mustn't they be marking?
Perfeito
mustn't I have marked? mustn't you have marked? mustn't she have marked? mustn't we have marked? mustn't you have marked? mustn't they have marked?
Perfeito com V-ing
mustn't I have been marking? mustn't you have been marking? mustn't she have been marking? mustn't we have been marking? mustn't you have been marking? mustn't they have been marking?