I could commentate you could commentate she could commentate we could commentate you could commentate they could commentate
V-ing form
I could be commentating you could be commentating she could be commentating we could be commentating you could be commentating they could be commentating
Perfect
I could have commentated you could have commentated she could have commentated we could have commentated you could have commentated they could have commentated
V-ing perfect
I could have been commentating you could have been commentating she could have been commentating we could have been commentating you could have been commentating they could have been commentating
Negation
Simple form
I could not commentate you could not commentate she could not commentate we could not commentate you could not commentate they could not commentate
V-ing form
I could not be commentating you could not be commentating she could not be commentating we could not be commentating you could not be commentating they could not be commentating
Perfect
I could not have commentated you could not have commentated she could not have commentated we could not have commentated you could not have commentated they could not have commentated
V-ing perfect
I could not have been commentating you could not have been commentating she could not have been commentating we could not have been commentating you could not have been commentating they could not have been commentating
Interrogative form
Simple form
could I commentate? could you commentate? could she commentate? could we commentate? could you commentate? could they commentate?
V-ing form
could I be commentating? could you be commentating? could she be commentating? could we be commentating? could you be commentating? could they be commentating?
Perfect
could I have commentated? could you have commentated? could she have commentated? could we have commentated? could you have commentated? could they have commentated?
V-ing perfect
could I have been commentating? could you have been commentating? could she have been commentating? could we have been commentating? could you have been commentating? could they have been commentating?
Interro-negative form
Simple form
could I not commentate? could you not commentate? could she not commentate? could we not commentate? could you not commentate? could they not commentate?
V-ing form
could I not be commentating? could you not be commentating? could she not be commentating? could we not be commentating? could you not be commentating? could they not be commentating?
Perfect
could I not have commentated? could you not have commentated? could she not have commentated? could we not have commentated? could you not have commentated? could they not have commentated?
V-ing perfect
could I not have been commentating? could you not have been commentating? could she not have been commentating? could we not have been commentating? could you not have been commentating? could they not have been commentating?