must fever
Verbo regular: fever - fevered- fevered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must fever
you must fever
she must fever
we must fever
you must fever
they must fever 	I must be fevering
you must be fevering
she must be fevering
we must be fevering
you must be fevering
they must be fevering	I must have fevered
you must have fevered
she must have fevered
we must have fevered
you must have fevered
they must have fevered	I must have been fevering
you must have been fevering
she must have been fevering
we must have been fevering
you must have been fevering
they must have been fevering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not fever
you must not fever
she must not fever
we must not fever
you must not fever
they must not fever 	I must not be fevering
you must not be fevering
she must not be fevering
we must not be fevering
you must not be fevering
they must not be fevering	I must not have fevered
you must not have fevered
she must not have fevered
we must not have fevered
you must not have fevered
they must not have fevered	I must not have been fevering
you must not have been fevering
she must not have been fevering
we must not have been fevering
you must not have been fevering
they must not have been fevering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I fever?
must you fever?
must she fever?
must we fever?
must you fever?
must they fever? 	must I be fevering?
must you be fevering?
must she be fevering?
must we be fevering?
must you be fevering?
must they be fevering? 	must I have fevered?
must you have fevered?
must she have fevered?
must we have fevered?
must you have fevered?
must they have fevered? 	must I have been fevering?
must you have been fevering?
must she have been fevering?
must we have been fevering?
must you have been fevering?
must they have been fevering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not fever?
must you not fever?
must she not fever?
must we not fever?
must you not fever?
must they not fever? 	must I not be fevering?
must you not be fevering?
must she not be fevering?
must we not be fevering?
must you not be fevering?
must they not be fevering? 	must I not have fevered?
must you not have fevered?
must she not have fevered?
must we not have fevered?
must you not have fevered?
must they not have fevered? 	must I not have been fevering?
must you not have been fevering?
must she not have been fevering?
must we not have been fevering?
must you not have been fevering?
must they not have been fevering?