English verb conjugation CAN ROLLER-SKATE

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

Affirmation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Negation

Simple form

I cannot roller-skate
you cannot roller-skate
he cannot roller-skate
we cannot roller-skate
you cannot roller-skate
they cannot roller-skate

V-ing form

I cannot be roller-skating
you cannot be roller-skating
he cannot be roller-skating
we cannot be roller-skating
you cannot be roller-skating
they cannot be roller-skating

Perfect

I cannot have roller-skated
you cannot have roller-skated
he cannot have roller-skated
we cannot have roller-skated
you cannot have roller-skated
they cannot have roller-skated

V-ing perfect

I cannot have been roller-skating
you cannot have been roller-skating
he cannot have been roller-skating
we cannot have been roller-skating
you cannot have been roller-skating
they cannot have been roller-skating

Interrogative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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