English verb conjugation MUST WATER-SKI

Regular verb: water-ski - water-skied - water-skied

Affirmation

Simple form

I must water-ski
you must water-ski
she must water-ski
we must water-ski
you must water-ski
they must water-ski

V-ing form

I must be water-skiing
you must be water-skiing
she must be water-skiing
we must be water-skiing
you must be water-skiing
they must be water-skiing

Perfect

I must have water-skied
you must have water-skied
she must have water-skied
we must have water-skied
you must have water-skied
they must have water-skied

V-ing perfect

I must have been water-skiing
you must have been water-skiing
she must have been water-skiing
we must have been water-skiing
you must have been water-skiing
they must have been water-skiing

Negation

Simple form

I mustn't water-ski
you mustn't water-ski
she mustn't water-ski
we mustn't water-ski
you mustn't water-ski
they mustn't water-ski

V-ing form

I mustn't be water-skiing
you mustn't be water-skiing
she mustn't be water-skiing
we mustn't be water-skiing
you mustn't be water-skiing
they mustn't be water-skiing

Perfect

I mustn't have water-skied
you mustn't have water-skied
she mustn't have water-skied
we mustn't have water-skied
you mustn't have water-skied
they mustn't have water-skied

V-ing perfect

I mustn't have been water-skiing
you mustn't have been water-skiing
she mustn't have been water-skiing
we mustn't have been water-skiing
you mustn't have been water-skiing
they mustn't have been water-skiing

Interrogative form

Simple form

must I water-ski?
must you water-ski?
must she water-ski?
must we water-ski?
must you water-ski?
must they water-ski?

V-ing form

must I be water-skiing?
must you be water-skiing?
must she be water-skiing?
must we be water-skiing?
must you be water-skiing?
must they be water-skiing?

Perfect

must I have water-skied?
must you have water-skied?
must she have water-skied?
must we have water-skied?
must you have water-skied?
must they have water-skied?

V-ing perfect

must I have been water-skiing?
must you have been water-skiing?
must she have been water-skiing?
must we have been water-skiing?
must you have been water-skiing?
must they have been water-skiing?

Interro-negative form

Simple form

mustn't I water-ski?
mustn't you water-ski?
mustn't she water-ski?
mustn't we water-ski?
mustn't you water-ski?
mustn't they water-ski?

V-ing form

mustn't I be water-skiing?
mustn't you be water-skiing?
mustn't she be water-skiing?
mustn't we be water-skiing?
mustn't you be water-skiing?
mustn't they be water-skiing?

Perfect

mustn't I have water-skied?
mustn't you have water-skied?
mustn't she have water-skied?
mustn't we have water-skied?
mustn't you have water-skied?
mustn't they have water-skied?

V-ing perfect

mustn't I have been water-skiing?
mustn't you have been water-skiing?
mustn't she have been water-skiing?
mustn't we have been water-skiing?
mustn't you have been water-skiing?
mustn't they have been water-skiing?

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