must serenade
Verbo regular: serenade - serenaded- serenaded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must serenade
you must serenade
he must serenade
we must serenade
you must serenade
they must serenade 	I must be serenading
you must be serenading
he must be serenading
we must be serenading
you must be serenading
they must be serenading	I must have serenaded
you must have serenaded
he must have serenaded
we must have serenaded
you must have serenaded
they must have serenaded	I must have been serenading
you must have been serenading
he must have been serenading
we must have been serenading
you must have been serenading
they must have been serenading	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not serenade
you must not serenade
he must not serenade
we must not serenade
you must not serenade
they must not serenade 	I must not be serenading
you must not be serenading
he must not be serenading
we must not be serenading
you must not be serenading
they must not be serenading	I must not have serenaded
you must not have serenaded
he must not have serenaded
we must not have serenaded
you must not have serenaded
they must not have serenaded	I must not have been serenading
you must not have been serenading
he must not have been serenading
we must not have been serenading
you must not have been serenading
they must not have been serenading	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I serenade?
must you serenade?
must he serenade?
must we serenade?
must you serenade?
must they serenade? 	must I be serenading?
must you be serenading?
must he be serenading?
must we be serenading?
must you be serenading?
must they be serenading? 	must I have serenaded?
must you have serenaded?
must he have serenaded?
must we have serenaded?
must you have serenaded?
must they have serenaded? 	must I have been serenading?
must you have been serenading?
must he have been serenading?
must we have been serenading?
must you have been serenading?
must they have been serenading? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not serenade?
must you not serenade?
must he not serenade?
must we not serenade?
must you not serenade?
must they not serenade? 	must I not be serenading?
must you not be serenading?
must he not be serenading?
must we not be serenading?
must you not be serenading?
must they not be serenading? 	must I not have serenaded?
must you not have serenaded?
must he not have serenaded?
must we not have serenaded?
must you not have serenaded?
must they not have serenaded? 	must I not have been serenading?
must you not have been serenading?
must he not have been serenading?
must we not have been serenading?
must you not have been serenading?
must they not have been serenading?