English verb conjugation
COULD SERENADE

Regular verb: serenade - serenaded - serenaded

Affirmation

Simple form	V-ing form
I could serenade you could serenade he could serenade we could serenade you could serenade they could serenade	I could be serenading you could be serenading he could be serenading we could be serenading you could be serenading they could be serenading
Perfect	V-ing perfect
I could have serenaded you could have serenaded he could have serenaded we could have serenaded you could have serenaded they could have serenaded	I could have been serenading you could have been serenading he could have been serenading we could have been serenading you could have been serenading they could have been serenading

Negation

Simple form	V-ing form
I could not serenade you could not serenade he could not serenade we could not serenade you could not serenade they could not serenade	I could not be serenading you could not be serenading he could not be serenading we could not be serenading you could not be serenading they could not be serenading
Perfect	V-ing perfect
I could not have serenaded you could not have serenaded he could not have serenaded we could not have serenaded you could not have serenaded they could not have serenaded	I could not have been serenading you could not have been serenading he could not have been serenading we could not have been serenading you could not have been serenading they could not have been serenading

Interrogative form

Simple form	V-ing form
could I serenade? could you serenade? could he serenade? could we serenade? could you serenade? could they serenade?	could I be serenading? could you be serenading? could he be serenading? could we be serenading? could you be serenading? could they be serenading?
Perfect	V-ing perfect
could I have serenaded? could you have serenaded? could he have serenaded? could we have serenaded? could you have serenaded? could they have serenaded?	could I have been serenading? could you have been serenading? could he have been serenading? could we have been serenading? could you have been serenading? could they have been serenading?

Interro-negative form

Simple form	V-ing form
could I not serenade? could you not serenade? could he not serenade? could we not serenade? could you not serenade? could they not serenade?	could I not be serenading? could you not be serenading? could he not be serenading? could we not be serenading? could you not be serenading? could they not be serenading?
Perfect	V-ing perfect
could I not have serenaded? could you not have serenaded? could he not have serenaded? could we not have serenaded? could you not have serenaded? could they not have serenaded?	could I not have been serenading? could you not have been serenading? could he not have been serenading? could we not have been serenading? could you not have been serenading? could they not have been serenading?