must quieten
Verbo regular: quieten - quietened- quietened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must quieten
you must quieten
he must quieten
we must quieten
you must quieten
they must quieten 	I must be quietening
you must be quietening
he must be quietening
we must be quietening
you must be quietening
they must be quietening	I must have quietened
you must have quietened
he must have quietened
we must have quietened
you must have quietened
they must have quietened	I must have been quietening
you must have been quietening
he must have been quietening
we must have been quietening
you must have been quietening
they must have been quietening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not quieten
you must not quieten
he must not quieten
we must not quieten
you must not quieten
they must not quieten 	I must not be quietening
you must not be quietening
he must not be quietening
we must not be quietening
you must not be quietening
they must not be quietening	I must not have quietened
you must not have quietened
he must not have quietened
we must not have quietened
you must not have quietened
they must not have quietened	I must not have been quietening
you must not have been quietening
he must not have been quietening
we must not have been quietening
you must not have been quietening
they must not have been quietening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I quieten?
must you quieten?
must he quieten?
must we quieten?
must you quieten?
must they quieten? 	must I be quietening?
must you be quietening?
must he be quietening?
must we be quietening?
must you be quietening?
must they be quietening? 	must I have quietened?
must you have quietened?
must he have quietened?
must we have quietened?
must you have quietened?
must they have quietened? 	must I have been quietening?
must you have been quietening?
must he have been quietening?
must we have been quietening?
must you have been quietening?
must they have been quietening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not quieten?
must you not quieten?
must he not quieten?
must we not quieten?
must you not quieten?
must they not quieten? 	must I not be quietening?
must you not be quietening?
must he not be quietening?
must we not be quietening?
must you not be quietening?
must they not be quietening? 	must I not have quietened?
must you not have quietened?
must he not have quietened?
must we not have quietened?
must you not have quietened?
must they not have quietened? 	must I not have been quietening?
must you not have been quietening?
must he not have been quietening?
must we not have been quietening?
must you not have been quietening?
must they not have been quietening?