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 couldn't serenade you couldn't serenade he couldn't serenade we couldn't serenade you couldn't serenade they couldn't serenade	I couldn't be serenading you couldn't be serenading he couldn't be serenading we couldn't be serenading you couldn't be serenading they couldn't be serenading
Perfect	V-ing perfect
I couldn't have serenaded you couldn't have serenaded he couldn't have serenaded we couldn't have serenaded you couldn't have serenaded they couldn't have serenaded	I couldn't have been serenading you couldn't have been serenading he couldn't have been serenading we couldn't have been serenading you couldn't have been serenading they couldn't 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
couldn't I serenade? couldn't you serenade? couldn't he serenade? couldn't we serenade? couldn't you serenade? couldn't they serenade?	couldn't I be serenading? couldn't you be serenading? couldn't he be serenading? couldn't we be serenading? couldn't you be serenading? couldn't they be serenading?
Perfect	V-ing perfect
couldn't I have serenaded? couldn't you have serenaded? couldn't he have serenaded? couldn't we have serenaded? couldn't you have serenaded? couldn't they have serenaded?	couldn't I have been serenading? couldn't you have been serenading? couldn't he have been serenading? couldn't we have been serenading? couldn't you have been serenading? couldn't they have been serenading?