English verb conjugation COULD SURF

Regular verb: surf - surfed - surfed

Affirmation

Simple form

I could surf
you could surf
she could surf
we could surf
you could surf
they could surf

V-ing form

I could be surfing
you could be surfing
she could be surfing
we could be surfing
you could be surfing
they could be surfing

Perfect

I could have surfed
you could have surfed
she could have surfed
we could have surfed
you could have surfed
they could have surfed

V-ing perfect

I could have been surfing
you could have been surfing
she could have been surfing
we could have been surfing
you could have been surfing
they could have been surfing

Negation

Simple form

I couldn't surf
you couldn't surf
she couldn't surf
we couldn't surf
you couldn't surf
they couldn't surf

V-ing form

I couldn't be surfing
you couldn't be surfing
she couldn't be surfing
we couldn't be surfing
you couldn't be surfing
they couldn't be surfing

Perfect

I couldn't have surfed
you couldn't have surfed
she couldn't have surfed
we couldn't have surfed
you couldn't have surfed
they couldn't have surfed

V-ing perfect

I couldn't have been surfing
you couldn't have been surfing
she couldn't have been surfing
we couldn't have been surfing
you couldn't have been surfing
they couldn't have been surfing

Interrogative form

Simple form

could I surf?
could you surf?
could she surf?
could we surf?
could you surf?
could they surf?

V-ing form

could I be surfing?
could you be surfing?
could she be surfing?
could we be surfing?
could you be surfing?
could they be surfing?

Perfect

could I have surfed?
could you have surfed?
could she have surfed?
could we have surfed?
could you have surfed?
could they have surfed?

V-ing perfect

could I have been surfing?
could you have been surfing?
could she have been surfing?
could we have been surfing?
could you have been surfing?
could they have been surfing?

Interro-negative form

Simple form

couldn't I surf?
couldn't you surf?
couldn't she surf?
couldn't we surf?
couldn't you surf?
couldn't they surf?

V-ing form

couldn't I be surfing?
couldn't you be surfing?
couldn't she be surfing?
couldn't we be surfing?
couldn't you be surfing?
couldn't they be surfing?

Perfect

couldn't I have surfed?
couldn't you have surfed?
couldn't she have surfed?
couldn't we have surfed?
couldn't you have surfed?
couldn't they have surfed?

V-ing perfect

couldn't I have been surfing?
couldn't you have been surfing?
couldn't she have been surfing?
couldn't we have been surfing?
couldn't you have been surfing?
couldn't they have been surfing?

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