English verb conjugation MUST SURF

Regular verb: surf - surfed - surfed

Affirmation

Simple form

I must surf
you must surf
he must surf
we must surf
you must surf
they must surf

V-ing form

I must be surfing
you must be surfing
he must be surfing
we must be surfing
you must be surfing
they must be surfing

Perfect

I must have surfed
you must have surfed
he must have surfed
we must have surfed
you must have surfed
they must have surfed

V-ing perfect

I must have been surfing
you must have been surfing
he must have been surfing
we must have been surfing
you must have been surfing
they must have been surfing

Negation

Simple form

I must not surf
you must not surf
he must not surf
we must not surf
you must not surf
they must not surf

V-ing form

I must not be surfing
you must not be surfing
he must not be surfing
we must not be surfing
you must not be surfing
they must not be surfing

Perfect

I must not have surfed
you must not have surfed
he must not have surfed
we must not have surfed
you must not have surfed
they must not have surfed

V-ing perfect

I must not have been surfing
you must not have been surfing
he must not have been surfing
we must not have been surfing
you must not have been surfing
they must not have been surfing

Interrogative form

Simple form

must I surf?
must you surf?
must he surf?
must we surf?
must you surf?
must they surf?

V-ing form

must I be surfing?
must you be surfing?
must he be surfing?
must we be surfing?
must you be surfing?
must they be surfing?

Perfect

must I have surfed?
must you have surfed?
must he have surfed?
must we have surfed?
must you have surfed?
must they have surfed?

V-ing perfect

must I have been surfing?
must you have been surfing?
must he have been surfing?
must we have been surfing?
must you have been surfing?
must they have been surfing?

Interro-negative form

Simple form

must I not surf?
must you not surf?
must he not surf?
must we not surf?
must you not surf?
must they not surf?

V-ing form

must I not be surfing?
must you not be surfing?
must he not be surfing?
must we not be surfing?
must you not be surfing?
must they not be surfing?

Perfect

must I not have surfed?
must you not have surfed?
must he not have surfed?
must we not have surfed?
must you not have surfed?
must they not have surfed?

V-ing perfect

must I not have been surfing?
must you not have been surfing?
must he not have been surfing?
must we not have been surfing?
must you not have been surfing?
must they not have been surfing?

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