Conjugación del verbo inglés
MUST COLLAPSE

Verbo regular: collapse - collapsed - collapsed

Afirmación

Forma simple	Forma con V-ing
I must collapse you must collapse she must collapse we must collapse you must collapse they must collapse	I must be collapsing you must be collapsing she must be collapsing we must be collapsing you must be collapsing they must be collapsing
Perfecto	Perfecto con V-ing
I must have collapsed you must have collapsed she must have collapsed we must have collapsed you must have collapsed they must have collapsed	I must have been collapsing you must have been collapsing she must have been collapsing we must have been collapsing you must have been collapsing they must have been collapsing

Negación

Forma simple	Forma con V-ing
I must not collapse you must not collapse she must not collapse we must not collapse you must not collapse they must not collapse	I must not be collapsing you must not be collapsing she must not be collapsing we must not be collapsing you must not be collapsing they must not be collapsing
Perfecto	Perfecto con V-ing
I must not have collapsed you must not have collapsed she must not have collapsed we must not have collapsed you must not have collapsed they must not have collapsed	I must not have been collapsing you must not have been collapsing she must not have been collapsing we must not have been collapsing you must not have been collapsing they must not have been collapsing

Forma interrogativa

Forma simple	Forma con V-ing
must I collapse? must you collapse? must she collapse? must we collapse? must you collapse? must they collapse?	must I be collapsing? must you be collapsing? must she be collapsing? must we be collapsing? must you be collapsing? must they be collapsing?
Perfecto	Perfecto con V-ing
must I have collapsed? must you have collapsed? must she have collapsed? must we have collapsed? must you have collapsed? must they have collapsed?	must I have been collapsing? must you have been collapsing? must she have been collapsing? must we have been collapsing? must you have been collapsing? must they have been collapsing?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not collapse? must you not collapse? must she not collapse? must we not collapse? must you not collapse? must they not collapse?	must I not be collapsing? must you not be collapsing? must she not be collapsing? must we not be collapsing? must you not be collapsing? must they not be collapsing?
Perfecto	Perfecto con V-ing
must I not have collapsed? must you not have collapsed? must she not have collapsed? must we not have collapsed? must you not have collapsed? must they not have collapsed?	must I not have been collapsing? must you not have been collapsing? must she not have been collapsing? must we not have been collapsing? must you not have been collapsing? must they not have been collapsing?