must apologize
Verbo regular: apologize - apologized- apologized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must apologize
you must apologize
he must apologize
we must apologize
you must apologize
they must apologize 	I must be apologizing
you must be apologizing
he must be apologizing
we must be apologizing
you must be apologizing
they must be apologizing	I must have apologized
you must have apologized
he must have apologized
we must have apologized
you must have apologized
they must have apologized	I must have been apologizing
you must have been apologizing
he must have been apologizing
we must have been apologizing
you must have been apologizing
they must have been apologizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't apologize
you mustn't apologize
he mustn't apologize
we mustn't apologize
you mustn't apologize
they mustn't apologize 	I mustn't be apologizing
you mustn't be apologizing
he mustn't be apologizing
we mustn't be apologizing
you mustn't be apologizing
they mustn't be apologizing	I mustn't have apologized
you mustn't have apologized
he mustn't have apologized
we mustn't have apologized
you mustn't have apologized
they mustn't have apologized	I mustn't have been apologizing
you mustn't have been apologizing
he mustn't have been apologizing
we mustn't have been apologizing
you mustn't have been apologizing
they mustn't have been apologizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I apologize?
must you apologize?
must he apologize?
must we apologize?
must you apologize?
must they apologize? 	must I be apologizing?
must you be apologizing?
must he be apologizing?
must we be apologizing?
must you be apologizing?
must they be apologizing? 	must I have apologized?
must you have apologized?
must he have apologized?
must we have apologized?
must you have apologized?
must they have apologized? 	must I have been apologizing?
must you have been apologizing?
must he have been apologizing?
must we have been apologizing?
must you have been apologizing?
must they have been apologizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I apologize?
mustn't you apologize?
mustn't he apologize?
mustn't we apologize?
mustn't you apologize?
mustn't they apologize? 	mustn't I be apologizing?
mustn't you be apologizing?
mustn't he be apologizing?
mustn't we be apologizing?
mustn't you be apologizing?
mustn't they be apologizing? 	mustn't I have apologized?
mustn't you have apologized?
mustn't he have apologized?
mustn't we have apologized?
mustn't you have apologized?
mustn't they have apologized? 	mustn't I have been apologizing?
mustn't you have been apologizing?
mustn't he have been apologizing?
mustn't we have been apologizing?
mustn't you have been apologizing?
mustn't they have been apologizing?