must sun
Verbo regular: sun - sunned- sunned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must sun
you must sun
he must sun
we must sun
you must sun
they must sun 	I must be sunning
you must be sunning
he must be sunning
we must be sunning
you must be sunning
they must be sunning	I must have sunned
you must have sunned
he must have sunned
we must have sunned
you must have sunned
they must have sunned	I must have been sunning
you must have been sunning
he must have been sunning
we must have been sunning
you must have been sunning
they must have been sunning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not sun
you must not sun
he must not sun
we must not sun
you must not sun
they must not sun 	I must not be sunning
you must not be sunning
he must not be sunning
we must not be sunning
you must not be sunning
they must not be sunning	I must not have sunned
you must not have sunned
he must not have sunned
we must not have sunned
you must not have sunned
they must not have sunned	I must not have been sunning
you must not have been sunning
he must not have been sunning
we must not have been sunning
you must not have been sunning
they must not have been sunning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I sun?
must you sun?
must he sun?
must we sun?
must you sun?
must they sun? 	must I be sunning?
must you be sunning?
must he be sunning?
must we be sunning?
must you be sunning?
must they be sunning? 	must I have sunned?
must you have sunned?
must he have sunned?
must we have sunned?
must you have sunned?
must they have sunned? 	must I have been sunning?
must you have been sunning?
must he have been sunning?
must we have been sunning?
must you have been sunning?
must they have been sunning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not sun?
must you not sun?
must he not sun?
must we not sun?
must you not sun?
must they not sun? 	must I not be sunning?
must you not be sunning?
must he not be sunning?
must we not be sunning?
must you not be sunning?
must they not be sunning? 	must I not have sunned?
must you not have sunned?
must he not have sunned?
must we not have sunned?
must you not have sunned?
must they not have sunned? 	must I not have been sunning?
must you not have been sunning?
must he not have been sunning?
must we not have been sunning?
must you not have been sunning?
must they not have been sunning?