Conjugación del verbo inglés
MUST STEM

Verbo regular: stem - stemmed - stemmed

Afirmación

Forma simple	Forma con V-ing
I must stem you must stem she must stem we must stem you must stem they must stem	I must be stemming you must be stemming she 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 she 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 she 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 must not stem you must not stem she must not stem we must not stem you must not stem they must not stem	I must not be stemming you must not be stemming she must not be stemming we must not be stemming you must not be stemming they must not be stemming
Perfecto	Perfecto con V-ing
I must not have stemmed you must not have stemmed she must not have stemmed we must not have stemmed you must not have stemmed they must not have stemmed	I must not have been stemming you must not have been stemming she must not have been stemming we must not have been stemming you must not have been stemming they must not have been stemming

Forma interrogativa

Forma simple	Forma con V-ing
must I stem? must you stem? must she stem? must we stem? must you stem? must they stem?	must I be stemming? must you be stemming? must she 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 she 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 she 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
must I not stem? must you not stem? must she not stem? must we not stem? must you not stem? must they not stem?	must I not be stemming? must you not be stemming? must she not be stemming? must we not be stemming? must you not be stemming? must they not be stemming?
Perfecto	Perfecto con V-ing
must I not have stemmed? must you not have stemmed? must she not have stemmed? must we not have stemmed? must you not have stemmed? must they not have stemmed?	must I not have been stemming? must you not have been stemming? must she not have been stemming? must we not have been stemming? must you not have been stemming? must they not have been stemming?