I must skip you must skip he must skip we must skip you must skip they must skip
Forma con V-ing
I must be skipping you must be skipping he must be skipping we must be skipping you must be skipping they must be skipping
Perfecto
I must have skipped you must have skipped he must have skipped we must have skipped you must have skipped they must have skipped
Perfecto con V-ing
I must have been skipping you must have been skipping he must have been skipping we must have been skipping you must have been skipping they must have been skipping
Negación
Forma simple
I mustn't skip you mustn't skip he mustn't skip we mustn't skip you mustn't skip they mustn't skip
Forma con V-ing
I mustn't be skipping you mustn't be skipping he mustn't be skipping we mustn't be skipping you mustn't be skipping they mustn't be skipping
Perfecto
I mustn't have skipped you mustn't have skipped he mustn't have skipped we mustn't have skipped you mustn't have skipped they mustn't have skipped
Perfecto con V-ing
I mustn't have been skipping you mustn't have been skipping he mustn't have been skipping we mustn't have been skipping you mustn't have been skipping they mustn't have been skipping
Forma interrogativa
Forma simple
must I skip? must you skip? must he skip? must we skip? must you skip? must they skip?
Forma con V-ing
must I be skipping? must you be skipping? must he be skipping? must we be skipping? must you be skipping? must they be skipping?
Perfecto
must I have skipped? must you have skipped? must he have skipped? must we have skipped? must you have skipped? must they have skipped?
Perfecto con V-ing
must I have been skipping? must you have been skipping? must he have been skipping? must we have been skipping? must you have been skipping? must they have been skipping?
Forma interro-negativa
Forma simple
mustn't I skip? mustn't you skip? mustn't he skip? mustn't we skip? mustn't you skip? mustn't they skip?
Forma con V-ing
mustn't I be skipping? mustn't you be skipping? mustn't he be skipping? mustn't we be skipping? mustn't you be skipping? mustn't they be skipping?
Perfecto
mustn't I have skipped? mustn't you have skipped? mustn't he have skipped? mustn't we have skipped? mustn't you have skipped? mustn't they have skipped?
Perfecto con V-ing
mustn't I have been skipping? mustn't you have been skipping? mustn't he have been skipping? mustn't we have been skipping? mustn't you have been skipping? mustn't they have been skipping?