English verb conjugation COULD ROLLERBLADE

Regular verb: rollerblade - rollerbladed - rollerbladed

Affirmation

Simple form

I could rollerblade
you could rollerblade
he could rollerblade
we could rollerblade
you could rollerblade
they could rollerblade

V-ing form

I could be rollerblading
you could be rollerblading
he could be rollerblading
we could be rollerblading
you could be rollerblading
they could be rollerblading

Perfect

I could have rollerbladed
you could have rollerbladed
he could have rollerbladed
we could have rollerbladed
you could have rollerbladed
they could have rollerbladed

V-ing perfect

I could have been rollerblading
you could have been rollerblading
he could have been rollerblading
we could have been rollerblading
you could have been rollerblading
they could have been rollerblading

Negation

Simple form

I couldn't rollerblade
you couldn't rollerblade
he couldn't rollerblade
we couldn't rollerblade
you couldn't rollerblade
they couldn't rollerblade

V-ing form

I couldn't be rollerblading
you couldn't be rollerblading
he couldn't be rollerblading
we couldn't be rollerblading
you couldn't be rollerblading
they couldn't be rollerblading

Perfect

I couldn't have rollerbladed
you couldn't have rollerbladed
he couldn't have rollerbladed
we couldn't have rollerbladed
you couldn't have rollerbladed
they couldn't have rollerbladed

V-ing perfect

I couldn't have been rollerblading
you couldn't have been rollerblading
he couldn't have been rollerblading
we couldn't have been rollerblading
you couldn't have been rollerblading
they couldn't have been rollerblading

Interrogative form

Simple form

could I rollerblade?
could you rollerblade?
could he rollerblade?
could we rollerblade?
could you rollerblade?
could they rollerblade?

V-ing form

could I be rollerblading?
could you be rollerblading?
could he be rollerblading?
could we be rollerblading?
could you be rollerblading?
could they be rollerblading?

Perfect

could I have rollerbladed?
could you have rollerbladed?
could he have rollerbladed?
could we have rollerbladed?
could you have rollerbladed?
could they have rollerbladed?

V-ing perfect

could I have been rollerblading?
could you have been rollerblading?
could he have been rollerblading?
could we have been rollerblading?
could you have been rollerblading?
could they have been rollerblading?

Interro-negative form

Simple form

couldn't I rollerblade?
couldn't you rollerblade?
couldn't he rollerblade?
couldn't we rollerblade?
couldn't you rollerblade?
couldn't they rollerblade?

V-ing form

couldn't I be rollerblading?
couldn't you be rollerblading?
couldn't he be rollerblading?
couldn't we be rollerblading?
couldn't you be rollerblading?
couldn't they be rollerblading?

Perfect

couldn't I have rollerbladed?
couldn't you have rollerbladed?
couldn't he have rollerbladed?
couldn't we have rollerbladed?
couldn't you have rollerbladed?
couldn't they have rollerbladed?

V-ing perfect

couldn't I have been rollerblading?
couldn't you have been rollerblading?
couldn't he have been rollerblading?
couldn't we have been rollerblading?
couldn't you have been rollerblading?
couldn't they have been rollerblading?

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