English verb conjugation
COULD SMELL

Irregular verb: smell - smelled, smelt - smelled, smelt

Affirmation

Simple form	V-ing form
I could smell you could smell he could smell we could smell you could smell they could smell	I could be smelling you could be smelling he could be smelling we could be smelling you could be smelling they could be smelling
Perfect	V-ing perfect
I could have smelled, smelt you could have smelled, smelt he could have smelled, smelt we could have smelled, smelt you could have smelled, smelt they could have smelled, smelt	I could have been smelling you could have been smelling he could have been smelling we could have been smelling you could have been smelling they could have been smelling

Negation

Simple form	V-ing form
I could not smell you could not smell he could not smell we could not smell you could not smell they could not smell	I could not be smelling you could not be smelling he could not be smelling we could not be smelling you could not be smelling they could not be smelling
Perfect	V-ing perfect
I could not have smelled, smelt you could not have smelled, smelt he could not have smelled, smelt we could not have smelled, smelt you could not have smelled, smelt they could not have smelled, smelt	I could not have been smelling you could not have been smelling he could not have been smelling we could not have been smelling you could not have been smelling they could not have been smelling

Interrogative form

Simple form	V-ing form
could I smell? could you smell? could he smell? could we smell? could you smell? could they smell?	could I be smelling? could you be smelling? could he be smelling? could we be smelling? could you be smelling? could they be smelling?
Perfect	V-ing perfect
could I have smelled, smelt? could you have smelled, smelt? could he have smelled, smelt? could we have smelled, smelt? could you have smelled, smelt? could they have smelled, smelt?	could I have been smelling? could you have been smelling? could he have been smelling? could we have been smelling? could you have been smelling? could they have been smelling?

Interro-negative form

Simple form	V-ing form
could I not smell? could you not smell? could he not smell? could we not smell? could you not smell? could they not smell?	could I not be smelling? could you not be smelling? could he not be smelling? could we not be smelling? could you not be smelling? could they not be smelling?
Perfect	V-ing perfect
could I not have smelled, smelt? could you not have smelled, smelt? could he not have smelled, smelt? could we not have smelled, smelt? could you not have smelled, smelt? could they not have smelled, smelt?	could I not have been smelling? could you not have been smelling? could he not have been smelling? could we not have been smelling? could you not have been smelling? could they not have been smelling?