English verb conjugation MUST SIGHTSEE

Regular verb: sightsee - sightseed - sightseed

Affirmation

Simple form

I must sightsee
you must sightsee
he must sightsee
we must sightsee
you must sightsee
they must sightsee

V-ing form

I must be sightseeing
you must be sightseeing
he must be sightseeing
we must be sightseeing
you must be sightseeing
they must be sightseeing

Perfect

I must have sightseed
you must have sightseed
he must have sightseed
we must have sightseed
you must have sightseed
they must have sightseed

V-ing perfect

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

Negation

Simple form

I must not sightsee
you must not sightsee
he must not sightsee
we must not sightsee
you must not sightsee
they must not sightsee

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sightsee?
must you sightsee?
must he sightsee?
must we sightsee?
must you sightsee?
must they sightsee?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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