English verb conjugation CAN SIGHTSEE

Regular verb: sightsee - sightseed - sightseed

Affirmation

Simple form

I can sightsee
you can sightsee
he can sightsee
we can sightsee
you can sightsee
they can sightsee

V-ing form

I can be sightseeing
you can be sightseeing
he can be sightseeing
we can be sightseeing
you can be sightseeing
they can be sightseeing

Perfect

I can have sightseed
you can have sightseed
he can have sightseed
we can have sightseed
you can have sightseed
they can have sightseed

V-ing perfect

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

Negation

Simple form

I cannot sightsee
you cannot sightsee
he cannot sightsee
we cannot sightsee
you cannot sightsee
they cannot sightsee

V-ing form

I cannot be sightseeing
you cannot be sightseeing
he cannot be sightseeing
we cannot be sightseeing
you cannot be sightseeing
they cannot be sightseeing

Perfect

I cannot have sightseed
you cannot have sightseed
he cannot have sightseed
we cannot have sightseed
you cannot have sightseed
they cannot have sightseed

V-ing perfect

I cannot have been sightseeing
you cannot have been sightseeing
he cannot have been sightseeing
we cannot have been sightseeing
you cannot have been sightseeing
they cannot have been sightseeing

Interrogative form

Simple form

can I sightsee?
can you sightsee?
can he sightsee?
can we sightsee?
can you sightsee?
can they sightsee?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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