Conjugación del verbo inglés
MUST SKI

Verbo regular: ski - skied - skied

Afirmación

Forma simple	Forma con V-ing
I must ski you must ski he must ski we must ski you must ski they must ski	I must be skiing you must be skiing he must be skiing we must be skiing you must be skiing they must be skiing
Perfecto	Perfecto con V-ing
I must have skied you must have skied he must have skied we must have skied you must have skied they must have skied	I must have been skiing you must have been skiing he must have been skiing we must have been skiing you must have been skiing they must have been skiing

Negación

Forma simple	Forma con V-ing
I mustn't ski you mustn't ski he mustn't ski we mustn't ski you mustn't ski they mustn't ski	I mustn't be skiing you mustn't be skiing he mustn't be skiing we mustn't be skiing you mustn't be skiing they mustn't be skiing
Perfecto	Perfecto con V-ing
I mustn't have skied you mustn't have skied he mustn't have skied we mustn't have skied you mustn't have skied they mustn't have skied	I mustn't have been skiing you mustn't have been skiing he 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	Forma con V-ing
must I ski? must you ski? must he ski? must we ski? must you ski? must they ski?	must I be skiing? must you be skiing? must he be skiing? must we be skiing? must you be skiing? must they be skiing?
Perfecto	Perfecto con V-ing
must I have skied? must you have skied? must he have skied? must we have skied? must you have skied? must they have skied?	must I have been skiing? must you have been skiing? must he have been skiing? must we have been skiing? must you have been skiing? must they have been skiing?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I ski? mustn't you ski? mustn't he ski? mustn't we ski? mustn't you ski? mustn't they ski?	mustn't I be skiing? mustn't you be skiing? mustn't he be skiing? mustn't we be skiing? mustn't you be skiing? mustn't they be skiing?
Perfecto	Perfecto con V-ing
mustn't I have skied? mustn't you have skied? mustn't he have skied? mustn't we have skied? mustn't you have skied? mustn't they have skied?	mustn't I have been skiing? mustn't you have been skiing? mustn't he have been skiing? mustn't we have been skiing? mustn't you have been skiing? mustn't they have been skiing?