must instruct
Verbo regular: instruct - instructed- instructed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must instruct
you must instruct
he must instruct
we must instruct
you must instruct
they must instruct 	I must be instructing
you must be instructing
he must be instructing
we must be instructing
you must be instructing
they must be instructing	I must have instructed
you must have instructed
he must have instructed
we must have instructed
you must have instructed
they must have instructed	I must have been instructing
you must have been instructing
he must have been instructing
we must have been instructing
you must have been instructing
they must have been instructing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't instruct
you mustn't instruct
he mustn't instruct
we mustn't instruct
you mustn't instruct
they mustn't instruct 	I mustn't be instructing
you mustn't be instructing
he mustn't be instructing
we mustn't be instructing
you mustn't be instructing
they mustn't be instructing	I mustn't have instructed
you mustn't have instructed
he mustn't have instructed
we mustn't have instructed
you mustn't have instructed
they mustn't have instructed	I mustn't have been instructing
you mustn't have been instructing
he mustn't have been instructing
we mustn't have been instructing
you mustn't have been instructing
they mustn't have been instructing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I instruct?
must you instruct?
must he instruct?
must we instruct?
must you instruct?
must they instruct? 	must I be instructing?
must you be instructing?
must he be instructing?
must we be instructing?
must you be instructing?
must they be instructing? 	must I have instructed?
must you have instructed?
must he have instructed?
must we have instructed?
must you have instructed?
must they have instructed? 	must I have been instructing?
must you have been instructing?
must he have been instructing?
must we have been instructing?
must you have been instructing?
must they have been instructing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I instruct?
mustn't you instruct?
mustn't he instruct?
mustn't we instruct?
mustn't you instruct?
mustn't they instruct? 	mustn't I be instructing?
mustn't you be instructing?
mustn't he be instructing?
mustn't we be instructing?
mustn't you be instructing?
mustn't they be instructing? 	mustn't I have instructed?
mustn't you have instructed?
mustn't he have instructed?
mustn't we have instructed?
mustn't you have instructed?
mustn't they have instructed? 	mustn't I have been instructing?
mustn't you have been instructing?
mustn't he have been instructing?
mustn't we have been instructing?
mustn't you have been instructing?
mustn't they have been instructing?