Conjugación del verbo inglés
MUST CHECK

Verbo regular: check - checked - checked

Afirmación

Forma simple	Forma con V-ing
I must check you must check he must check we must check you must check they must check	I must be checking you must be checking he must be checking we must be checking you must be checking they must be checking
Perfecto	Perfecto con V-ing
I must have checked you must have checked he must have checked we must have checked you must have checked they must have checked	I must have been checking you must have been checking he must have been checking we must have been checking you must have been checking they must have been checking

Negación

Forma simple	Forma con V-ing
I must not check you must not check he must not check we must not check you must not check they must not check	I must not be checking you must not be checking he must not be checking we must not be checking you must not be checking they must not be checking
Perfecto	Perfecto con V-ing
I must not have checked you must not have checked he must not have checked we must not have checked you must not have checked they must not have checked	I must not have been checking you must not have been checking he must not have been checking we must not have been checking you must not have been checking they must not have been checking

Forma interrogativa

Forma simple	Forma con V-ing
must I check? must you check? must he check? must we check? must you check? must they check?	must I be checking? must you be checking? must he be checking? must we be checking? must you be checking? must they be checking?
Perfecto	Perfecto con V-ing
must I have checked? must you have checked? must he have checked? must we have checked? must you have checked? must they have checked?	must I have been checking? must you have been checking? must he have been checking? must we have been checking? must you have been checking? must they have been checking?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not check? must you not check? must he not check? must we not check? must you not check? must they not check?	must I not be checking? must you not be checking? must he not be checking? must we not be checking? must you not be checking? must they not be checking?
Perfecto	Perfecto con V-ing
must I not have checked? must you not have checked? must he not have checked? must we not have checked? must you not have checked? must they not have checked?	must I not have been checking? must you not have been checking? must he not have been checking? must we not have been checking? must you not have been checking? must they not have been checking?