English verb conjugation COULD SKATEBOARD

Regular verb: skateboard - skateboarded - skateboarded

Affirmation

Simple form

I could skateboard
you could skateboard
he could skateboard
we could skateboard
you could skateboard
they could skateboard

V-ing form

I could be skateboarding
you could be skateboarding
he could be skateboarding
we could be skateboarding
you could be skateboarding
they could be skateboarding

Perfect

I could have skateboarded
you could have skateboarded
he could have skateboarded
we could have skateboarded
you could have skateboarded
they could have skateboarded

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I skateboard?
could you skateboard?
could he skateboard?
could we skateboard?
could you skateboard?
could they skateboard?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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