Conjugación del verbo inglés
MUST PREHARDEN

Verbo regular: preharden - prehardened - prehardened

Afirmación

Forma simple	Forma con V-ing
I must preharden you must preharden he must preharden we must preharden you must preharden they must preharden	I must be prehardening you must be prehardening he must be prehardening we must be prehardening you must be prehardening they must be prehardening
Perfecto	Perfecto con V-ing
I must have prehardened you must have prehardened he must have prehardened we must have prehardened you must have prehardened they must have prehardened	I must have been prehardening you must have been prehardening he must have been prehardening we must have been prehardening you must have been prehardening they must have been prehardening

Negación

Forma simple	Forma con V-ing
I must not preharden you must not preharden he must not preharden we must not preharden you must not preharden they must not preharden	I must not be prehardening you must not be prehardening he must not be prehardening we must not be prehardening you must not be prehardening they must not be prehardening
Perfecto	Perfecto con V-ing
I must not have prehardened you must not have prehardened he must not have prehardened we must not have prehardened you must not have prehardened they must not have prehardened	I must not have been prehardening you must not have been prehardening he must not have been prehardening we must not have been prehardening you must not have been prehardening they must not have been prehardening

Forma interrogativa

Forma simple	Forma con V-ing
must I preharden? must you preharden? must he preharden? must we preharden? must you preharden? must they preharden?	must I be prehardening? must you be prehardening? must he be prehardening? must we be prehardening? must you be prehardening? must they be prehardening?
Perfecto	Perfecto con V-ing
must I have prehardened? must you have prehardened? must he have prehardened? must we have prehardened? must you have prehardened? must they have prehardened?	must I have been prehardening? must you have been prehardening? must he have been prehardening? must we have been prehardening? must you have been prehardening? must they have been prehardening?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not preharden? must you not preharden? must he not preharden? must we not preharden? must you not preharden? must they not preharden?	must I not be prehardening? must you not be prehardening? must he not be prehardening? must we not be prehardening? must you not be prehardening? must they not be prehardening?
Perfecto	Perfecto con V-ing
must I not have prehardened? must you not have prehardened? must he not have prehardened? must we not have prehardened? must you not have prehardened? must they not have prehardened?	must I not have been prehardening? must you not have been prehardening? must he not have been prehardening? must we not have been prehardening? must you not have been prehardening? must they not have been prehardening?