English verb conjugation COULD ROLLER-SKATE

Regular verb: roller-skate - roller-skated - roller-skated

Affirmation

Simple form

I could roller-skate
you could roller-skate
he could roller-skate
we could roller-skate
you could roller-skate
they could roller-skate

V-ing form

I could be roller-skating
you could be roller-skating
he could be roller-skating
we could be roller-skating
you could be roller-skating
they could be roller-skating

Perfect

I could have roller-skated
you could have roller-skated
he could have roller-skated
we could have roller-skated
you could have roller-skated
they could have roller-skated

V-ing perfect

I could have been roller-skating
you could have been roller-skating
he could have been roller-skating
we could have been roller-skating
you could have been roller-skating
they could have been roller-skating

Negation

Simple form

I could not roller-skate
you could not roller-skate
he could not roller-skate
we could not roller-skate
you could not roller-skate
they could not roller-skate

V-ing form

I could not be roller-skating
you could not be roller-skating
he could not be roller-skating
we could not be roller-skating
you could not be roller-skating
they could not be roller-skating

Perfect

I could not have roller-skated
you could not have roller-skated
he could not have roller-skated
we could not have roller-skated
you could not have roller-skated
they could not have roller-skated

V-ing perfect

I could not have been roller-skating
you could not have been roller-skating
he could not have been roller-skating
we could not have been roller-skating
you could not have been roller-skating
they could not have been roller-skating

Interrogative form

Simple form

could I roller-skate?
could you roller-skate?
could he roller-skate?
could we roller-skate?
could you roller-skate?
could they roller-skate?

V-ing form

could I be roller-skating?
could you be roller-skating?
could he be roller-skating?
could we be roller-skating?
could you be roller-skating?
could they be roller-skating?

Perfect

could I have roller-skated?
could you have roller-skated?
could he have roller-skated?
could we have roller-skated?
could you have roller-skated?
could they have roller-skated?

V-ing perfect

could I have been roller-skating?
could you have been roller-skating?
could he have been roller-skating?
could we have been roller-skating?
could you have been roller-skating?
could they have been roller-skating?

Interro-negative form

Simple form

could I not roller-skate?
could you not roller-skate?
could he not roller-skate?
could we not roller-skate?
could you not roller-skate?
could they not roller-skate?

V-ing form

could I not be roller-skating?
could you not be roller-skating?
could he not be roller-skating?
could we not be roller-skating?
could you not be roller-skating?
could they not be roller-skating?

Perfect

could I not have roller-skated?
could you not have roller-skated?
could he not have roller-skated?
could we not have roller-skated?
could you not have roller-skated?
could they not have roller-skated?

V-ing perfect

could I not have been roller-skating?
could you not have been roller-skating?
could he not have been roller-skating?
could we not have been roller-skating?
could you not have been roller-skating?
could they not have been roller-skating?

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