I must ski you must ski she must ski we must ski you must ski they must ski
Forma com V-ing
I must be skiing you must be skiing she must be skiing we must be skiing you must be skiing they must be skiing
Perfeito
I must have skied you must have skied she must have skied we must have skied you must have skied they must have skied
Perfeito com V-ing
I must have been skiing you must have been skiing she must have been skiing we must have been skiing you must have been skiing they must have been skiing
Negação
Forma simple
I mustn't ski you mustn't ski she mustn't ski we mustn't ski you mustn't ski they mustn't ski
Forma com V-ing
I mustn't be skiing you mustn't be skiing she mustn't be skiing we mustn't be skiing you mustn't be skiing they mustn't be skiing
Perfeito
I mustn't have skied you mustn't have skied she mustn't have skied we mustn't have skied you mustn't have skied they mustn't have skied
Perfeito com V-ing
I mustn't have been skiing you mustn't have been skiing she mustn't have been skiing we mustn't have been skiing you mustn't have been skiing they mustn't have been skiing
Forma interrogativa
Forma simple
must I ski? must you ski? must she ski? must we ski? must you ski? must they ski?
Forma com V-ing
must I be skiing? must you be skiing? must she be skiing? must we be skiing? must you be skiing? must they be skiing?
Perfeito
must I have skied? must you have skied? must she have skied? must we have skied? must you have skied? must they have skied?
Perfeito com V-ing
must I have been skiing? must you have been skiing? must she have been skiing? must we have been skiing? must you have been skiing? must they have been skiing?
Forma interro-Negação
Forma simple
mustn't I ski? mustn't you ski? mustn't she ski? mustn't we ski? mustn't you ski? mustn't they ski?
Forma com V-ing
mustn't I be skiing? mustn't you be skiing? mustn't she be skiing? mustn't we be skiing? mustn't you be skiing? mustn't they be skiing?
Perfeito
mustn't I have skied? mustn't you have skied? mustn't she have skied? mustn't we have skied? mustn't you have skied? mustn't they have skied?
Perfeito com V-ing
mustn't I have been skiing? mustn't you have been skiing? mustn't she have been skiing? mustn't we have been skiing? mustn't you have been skiing? mustn't they have been skiing?