must quantify
Verbo regular: quantify - quantified- quantified

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must quantify
you must quantify
he must quantify
we must quantify
you must quantify
they must quantify 	I must be quantifying
you must be quantifying
he must be quantifying
we must be quantifying
you must be quantifying
they must be quantifying	I must have quantified
you must have quantified
he must have quantified
we must have quantified
you must have quantified
they must have quantified	I must have been quantifying
you must have been quantifying
he must have been quantifying
we must have been quantifying
you must have been quantifying
they must have been quantifying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't quantify
you mustn't quantify
he mustn't quantify
we mustn't quantify
you mustn't quantify
they mustn't quantify 	I mustn't be quantifying
you mustn't be quantifying
he mustn't be quantifying
we mustn't be quantifying
you mustn't be quantifying
they mustn't be quantifying	I mustn't have quantified
you mustn't have quantified
he mustn't have quantified
we mustn't have quantified
you mustn't have quantified
they mustn't have quantified	I mustn't have been quantifying
you mustn't have been quantifying
he mustn't have been quantifying
we mustn't have been quantifying
you mustn't have been quantifying
they mustn't have been quantifying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I quantify?
must you quantify?
must he quantify?
must we quantify?
must you quantify?
must they quantify? 	must I be quantifying?
must you be quantifying?
must he be quantifying?
must we be quantifying?
must you be quantifying?
must they be quantifying? 	must I have quantified?
must you have quantified?
must he have quantified?
must we have quantified?
must you have quantified?
must they have quantified? 	must I have been quantifying?
must you have been quantifying?
must he have been quantifying?
must we have been quantifying?
must you have been quantifying?
must they have been quantifying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I quantify?
mustn't you quantify?
mustn't he quantify?
mustn't we quantify?
mustn't you quantify?
mustn't they quantify? 	mustn't I be quantifying?
mustn't you be quantifying?
mustn't he be quantifying?
mustn't we be quantifying?
mustn't you be quantifying?
mustn't they be quantifying? 	mustn't I have quantified?
mustn't you have quantified?
mustn't he have quantified?
mustn't we have quantified?
mustn't you have quantified?
mustn't they have quantified? 	mustn't I have been quantifying?
mustn't you have been quantifying?
mustn't he have been quantifying?
mustn't we have been quantifying?
mustn't you have been quantifying?
mustn't they have been quantifying?