must define
Verbo regular: define - defined- defined

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must define
you must define
she must define
we must define
you must define
they must define 	I must be defining
you must be defining
she must be defining
we must be defining
you must be defining
they must be defining	I must have defined
you must have defined
she must have defined
we must have defined
you must have defined
they must have defined	I must have been defining
you must have been defining
she must have been defining
we must have been defining
you must have been defining
they must have been defining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not define
you must not define
she must not define
we must not define
you must not define
they must not define 	I must not be defining
you must not be defining
she must not be defining
we must not be defining
you must not be defining
they must not be defining	I must not have defined
you must not have defined
she must not have defined
we must not have defined
you must not have defined
they must not have defined	I must not have been defining
you must not have been defining
she must not have been defining
we must not have been defining
you must not have been defining
they must not have been defining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I define?
must you define?
must she define?
must we define?
must you define?
must they define? 	must I be defining?
must you be defining?
must she be defining?
must we be defining?
must you be defining?
must they be defining? 	must I have defined?
must you have defined?
must she have defined?
must we have defined?
must you have defined?
must they have defined? 	must I have been defining?
must you have been defining?
must she have been defining?
must we have been defining?
must you have been defining?
must they have been defining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not define?
must you not define?
must she not define?
must we not define?
must you not define?
must they not define? 	must I not be defining?
must you not be defining?
must she not be defining?
must we not be defining?
must you not be defining?
must they not be defining? 	must I not have defined?
must you not have defined?
must she not have defined?
must we not have defined?
must you not have defined?
must they not have defined? 	must I not have been defining?
must you not have been defining?
must she not have been defining?
must we not have been defining?
must you not have been defining?
must they not have been defining?