Conjugación del verbo inglés
MUST STEM

Verbo regular: stem - stemmed - stemmed

Afirmación

Forma simple	Forma con V-ing
I must stem you must stem he must stem we must stem you must stem they must stem	I must be stemming you must be stemming he must be stemming we must be stemming you must be stemming they must be stemming
Perfecto	Perfecto con V-ing
I must have stemmed you must have stemmed he must have stemmed we must have stemmed you must have stemmed they must have stemmed	I must have been stemming you must have been stemming he must have been stemming we must have been stemming you must have been stemming they must have been stemming

Negación

Forma simple	Forma con V-ing
I mustn't stem you mustn't stem he mustn't stem we mustn't stem you mustn't stem they mustn't stem	I mustn't be stemming you mustn't be stemming he mustn't be stemming we mustn't be stemming you mustn't be stemming they mustn't be stemming
Perfecto	Perfecto con V-ing
I mustn't have stemmed you mustn't have stemmed he mustn't have stemmed we mustn't have stemmed you mustn't have stemmed they mustn't have stemmed	I mustn't have been stemming you mustn't have been stemming he mustn't have been stemming we mustn't have been stemming you mustn't have been stemming they mustn't have been stemming

Forma interrogativa

Forma simple	Forma con V-ing
must I stem? must you stem? must he stem? must we stem? must you stem? must they stem?	must I be stemming? must you be stemming? must he be stemming? must we be stemming? must you be stemming? must they be stemming?
Perfecto	Perfecto con V-ing
must I have stemmed? must you have stemmed? must he have stemmed? must we have stemmed? must you have stemmed? must they have stemmed?	must I have been stemming? must you have been stemming? must he have been stemming? must we have been stemming? must you have been stemming? must they have been stemming?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I stem? mustn't you stem? mustn't he stem? mustn't we stem? mustn't you stem? mustn't they stem?	mustn't I be stemming? mustn't you be stemming? mustn't he be stemming? mustn't we be stemming? mustn't you be stemming? mustn't they be stemming?
Perfecto	Perfecto con V-ing
mustn't I have stemmed? mustn't you have stemmed? mustn't he have stemmed? mustn't we have stemmed? mustn't you have stemmed? mustn't they have stemmed?	mustn't I have been stemming? mustn't you have been stemming? mustn't he have been stemming? mustn't we have been stemming? mustn't you have been stemming? mustn't they have been stemming?