English verb conjugation CAN CAUTION

Regular verb: caution - cautioned - cautioned

Affirmation

Simple form

I can caution
you can caution
she can caution
we can caution
you can caution
they can caution

V-ing form

I can be cautioning
you can be cautioning
she can be cautioning
we can be cautioning
you can be cautioning
they can be cautioning

Perfect

I can have cautioned
you can have cautioned
she can have cautioned
we can have cautioned
you can have cautioned
they can have cautioned

V-ing perfect

I can have been cautioning
you can have been cautioning
she can have been cautioning
we can have been cautioning
you can have been cautioning
they can have been cautioning

Negation

Simple form

I cannot caution
you cannot caution
she cannot caution
we cannot caution
you cannot caution
they cannot caution

V-ing form

I cannot be cautioning
you cannot be cautioning
she cannot be cautioning
we cannot be cautioning
you cannot be cautioning
they cannot be cautioning

Perfect

I cannot have cautioned
you cannot have cautioned
she cannot have cautioned
we cannot have cautioned
you cannot have cautioned
they cannot have cautioned

V-ing perfect

I cannot have been cautioning
you cannot have been cautioning
she cannot have been cautioning
we cannot have been cautioning
you cannot have been cautioning
they cannot have been cautioning

Interrogative form

Simple form

can I caution?
can you caution?
can she caution?
can we caution?
can you caution?
can they caution?

V-ing form

can I be cautioning?
can you be cautioning?
can she be cautioning?
can we be cautioning?
can you be cautioning?
can they be cautioning?

Perfect

can I have cautioned?
can you have cautioned?
can she have cautioned?
can we have cautioned?
can you have cautioned?
can they have cautioned?

V-ing perfect

can I have been cautioning?
can you have been cautioning?
can she have been cautioning?
can we have been cautioning?
can you have been cautioning?
can they have been cautioning?

Interro-negative form

Simple form

can I not caution?
can you not caution?
can she not caution?
can we not caution?
can you not caution?
can they not caution?

V-ing form

can I not be cautioning?
can you not be cautioning?
can she not be cautioning?
can we not be cautioning?
can you not be cautioning?
can they not be cautioning?

Perfect

can I not have cautioned?
can you not have cautioned?
can she not have cautioned?
can we not have cautioned?
can you not have cautioned?
can they not have cautioned?

V-ing perfect

can I not have been cautioning?
can you not have been cautioning?
can she not have been cautioning?
can we not have been cautioning?
can you not have been cautioning?
can they not have been cautioning?

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