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