Conjugación del verbo inglés
MUST FASTEN

Verbo regular: fasten - fastened - fastened

Afirmación

Forma simple	Forma con V-ing
I must fasten you must fasten he must fasten we must fasten you must fasten they must fasten	I must be fastening you must be fastening he must be fastening we must be fastening you must be fastening they must be fastening
Perfecto	Perfecto con V-ing
I must have fastened you must have fastened he must have fastened we must have fastened you must have fastened they must have fastened	I must have been fastening you must have been fastening he must have been fastening we must have been fastening you must have been fastening they must have been fastening

Negación

Forma simple	Forma con V-ing
I must not fasten you must not fasten he must not fasten we must not fasten you must not fasten they must not fasten	I must not be fastening you must not be fastening he must not be fastening we must not be fastening you must not be fastening they must not be fastening
Perfecto	Perfecto con V-ing
I must not have fastened you must not have fastened he must not have fastened we must not have fastened you must not have fastened they must not have fastened	I must not have been fastening you must not have been fastening he must not have been fastening we must not have been fastening you must not have been fastening they must not have been fastening

Forma interrogativa

Forma simple	Forma con V-ing
must I fasten? must you fasten? must he fasten? must we fasten? must you fasten? must they fasten?	must I be fastening? must you be fastening? must he be fastening? must we be fastening? must you be fastening? must they be fastening?
Perfecto	Perfecto con V-ing
must I have fastened? must you have fastened? must he have fastened? must we have fastened? must you have fastened? must they have fastened?	must I have been fastening? must you have been fastening? must he have been fastening? must we have been fastening? must you have been fastening? must they have been fastening?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not fasten? must you not fasten? must he not fasten? must we not fasten? must you not fasten? must they not fasten?	must I not be fastening? must you not be fastening? must he not be fastening? must we not be fastening? must you not be fastening? must they not be fastening?
Perfecto	Perfecto con V-ing
must I not have fastened? must you not have fastened? must he not have fastened? must we not have fastened? must you not have fastened? must they not have fastened?	must I not have been fastening? must you not have been fastening? must he not have been fastening? must we not have been fastening? must you not have been fastening? must they not have been fastening?