must prescreen
Verbo regular: prescreen - prescreened- prescreened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must prescreen
you must prescreen
he must prescreen
we must prescreen
you must prescreen
they must prescreen 	I must be prescreening
you must be prescreening
he must be prescreening
we must be prescreening
you must be prescreening
they must be prescreening	I must have prescreened
you must have prescreened
he must have prescreened
we must have prescreened
you must have prescreened
they must have prescreened	I must have been prescreening
you must have been prescreening
he must have been prescreening
we must have been prescreening
you must have been prescreening
they must have been prescreening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not prescreen
you must not prescreen
he must not prescreen
we must not prescreen
you must not prescreen
they must not prescreen 	I must not be prescreening
you must not be prescreening
he must not be prescreening
we must not be prescreening
you must not be prescreening
they must not be prescreening	I must not have prescreened
you must not have prescreened
he must not have prescreened
we must not have prescreened
you must not have prescreened
they must not have prescreened	I must not have been prescreening
you must not have been prescreening
he must not have been prescreening
we must not have been prescreening
you must not have been prescreening
they must not have been prescreening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I prescreen?
must you prescreen?
must he prescreen?
must we prescreen?
must you prescreen?
must they prescreen? 	must I be prescreening?
must you be prescreening?
must he be prescreening?
must we be prescreening?
must you be prescreening?
must they be prescreening? 	must I have prescreened?
must you have prescreened?
must he have prescreened?
must we have prescreened?
must you have prescreened?
must they have prescreened? 	must I have been prescreening?
must you have been prescreening?
must he have been prescreening?
must we have been prescreening?
must you have been prescreening?
must they have been prescreening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not prescreen?
must you not prescreen?
must he not prescreen?
must we not prescreen?
must you not prescreen?
must they not prescreen? 	must I not be prescreening?
must you not be prescreening?
must he not be prescreening?
must we not be prescreening?
must you not be prescreening?
must they not be prescreening? 	must I not have prescreened?
must you not have prescreened?
must he not have prescreened?
must we not have prescreened?
must you not have prescreened?
must they not have prescreened? 	must I not have been prescreening?
must you not have been prescreening?
must he not have been prescreening?
must we not have been prescreening?
must you not have been prescreening?
must they not have been prescreening?