must castrate
Verbo regular: castrate - castrated- castrated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must castrate
you must castrate
he must castrate
we must castrate
you must castrate
they must castrate 	I must be castrating
you must be castrating
he must be castrating
we must be castrating
you must be castrating
they must be castrating	I must have castrated
you must have castrated
he must have castrated
we must have castrated
you must have castrated
they must have castrated	I must have been castrating
you must have been castrating
he must have been castrating
we must have been castrating
you must have been castrating
they must have been castrating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not castrate
you must not castrate
he must not castrate
we must not castrate
you must not castrate
they must not castrate 	I must not be castrating
you must not be castrating
he must not be castrating
we must not be castrating
you must not be castrating
they must not be castrating	I must not have castrated
you must not have castrated
he must not have castrated
we must not have castrated
you must not have castrated
they must not have castrated	I must not have been castrating
you must not have been castrating
he must not have been castrating
we must not have been castrating
you must not have been castrating
they must not have been castrating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I castrate?
must you castrate?
must he castrate?
must we castrate?
must you castrate?
must they castrate? 	must I be castrating?
must you be castrating?
must he be castrating?
must we be castrating?
must you be castrating?
must they be castrating? 	must I have castrated?
must you have castrated?
must he have castrated?
must we have castrated?
must you have castrated?
must they have castrated? 	must I have been castrating?
must you have been castrating?
must he have been castrating?
must we have been castrating?
must you have been castrating?
must they have been castrating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not castrate?
must you not castrate?
must he not castrate?
must we not castrate?
must you not castrate?
must they not castrate? 	must I not be castrating?
must you not be castrating?
must he not be castrating?
must we not be castrating?
must you not be castrating?
must they not be castrating? 	must I not have castrated?
must you not have castrated?
must he not have castrated?
must we not have castrated?
must you not have castrated?
must they not have castrated? 	must I not have been castrating?
must you not have been castrating?
must he not have been castrating?
must we not have been castrating?
must you not have been castrating?
must they not have been castrating?