I must butter you must butter he must butter we must butter you must butter they must butter
Forma com V-ing
I must be buttering you must be buttering he must be buttering we must be buttering you must be buttering they must be buttering
Perfeito
I must have buttered you must have buttered he must have buttered we must have buttered you must have buttered they must have buttered
Perfeito com V-ing
I must have been buttering you must have been buttering he must have been buttering we must have been buttering you must have been buttering they must have been buttering
Negação
Forma simple
I mustn't butter you mustn't butter he mustn't butter we mustn't butter you mustn't butter they mustn't butter
Forma com V-ing
I mustn't be buttering you mustn't be buttering he mustn't be buttering we mustn't be buttering you mustn't be buttering they mustn't be buttering
Perfeito
I mustn't have buttered you mustn't have buttered he mustn't have buttered we mustn't have buttered you mustn't have buttered they mustn't have buttered
Perfeito com V-ing
I mustn't have been buttering you mustn't have been buttering he mustn't have been buttering we mustn't have been buttering you mustn't have been buttering they mustn't have been buttering
Forma interrogativa
Forma simple
must I butter? must you butter? must he butter? must we butter? must you butter? must they butter?
Forma com V-ing
must I be buttering? must you be buttering? must he be buttering? must we be buttering? must you be buttering? must they be buttering?
Perfeito
must I have buttered? must you have buttered? must he have buttered? must we have buttered? must you have buttered? must they have buttered?
Perfeito com V-ing
must I have been buttering? must you have been buttering? must he have been buttering? must we have been buttering? must you have been buttering? must they have been buttering?
Forma interro-Negação
Forma simple
mustn't I butter? mustn't you butter? mustn't he butter? mustn't we butter? mustn't you butter? mustn't they butter?
Forma com V-ing
mustn't I be buttering? mustn't you be buttering? mustn't he be buttering? mustn't we be buttering? mustn't you be buttering? mustn't they be buttering?
Perfeito
mustn't I have buttered? mustn't you have buttered? mustn't he have buttered? mustn't we have buttered? mustn't you have buttered? mustn't they have buttered?
Perfeito com V-ing
mustn't I have been buttering? mustn't you have been buttering? mustn't he have been buttering? mustn't we have been buttering? mustn't you have been buttering? mustn't they have been buttering?