must refine
Verbo regular: refine - refined- refined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must refine
you must refine
he must refine
we must refine
you must refine
they must refine 	I must be refining
you must be refining
he must be refining
we must be refining
you must be refining
they must be refining	I must have refined
you must have refined
he must have refined
we must have refined
you must have refined
they must have refined	I must have been refining
you must have been refining
he must have been refining
we must have been refining
you must have been refining
they must have been refining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not refine
you must not refine
he must not refine
we must not refine
you must not refine
they must not refine 	I must not be refining
you must not be refining
he must not be refining
we must not be refining
you must not be refining
they must not be refining	I must not have refined
you must not have refined
he must not have refined
we must not have refined
you must not have refined
they must not have refined	I must not have been refining
you must not have been refining
he must not have been refining
we must not have been refining
you must not have been refining
they must not have been refining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I refine?
must you refine?
must he refine?
must we refine?
must you refine?
must they refine? 	must I be refining?
must you be refining?
must he be refining?
must we be refining?
must you be refining?
must they be refining? 	must I have refined?
must you have refined?
must he have refined?
must we have refined?
must you have refined?
must they have refined? 	must I have been refining?
must you have been refining?
must he have been refining?
must we have been refining?
must you have been refining?
must they have been refining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not refine?
must you not refine?
must he not refine?
must we not refine?
must you not refine?
must they not refine? 	must I not be refining?
must you not be refining?
must he not be refining?
must we not be refining?
must you not be refining?
must they not be refining? 	must I not have refined?
must you not have refined?
must he not have refined?
must we not have refined?
must you not have refined?
must they not have refined? 	must I not have been refining?
must you not have been refining?
must he not have been refining?
must we not have been refining?
must you not have been refining?
must they not have been refining?