English verb conjugation MAY CERTIFY

Regular verb: certify - certified - certified

Affirmation

Simple form

I may certify
you may certify
he may certify
we may certify
you may certify
they may certify

V-ing form

I may be certifying
you may be certifying
he may be certifying
we may be certifying
you may be certifying
they may be certifying

Perfect

I may have certified
you may have certified
he may have certified
we may have certified
you may have certified
they may have certified

V-ing perfect

I may have been certifying
you may have been certifying
he may have been certifying
we may have been certifying
you may have been certifying
they may have been certifying

Negation

Simple form

I may not certify
you may not certify
he may not certify
we may not certify
you may not certify
they may not certify

V-ing form

I may not be certifying
you may not be certifying
he may not be certifying
we may not be certifying
you may not be certifying
they may not be certifying

Perfect

I may not have certified
you may not have certified
he may not have certified
we may not have certified
you may not have certified
they may not have certified

V-ing perfect

I may not have been certifying
you may not have been certifying
he may not have been certifying
we may not have been certifying
you may not have been certifying
they may not have been certifying

Interrogative form

Simple form

may I certify?
may you certify?
may he certify?
may we certify?
may you certify?
may they certify?

V-ing form

may I be certifying?
may you be certifying?
may he be certifying?
may we be certifying?
may you be certifying?
may they be certifying?

Perfect

may I have certified?
may you have certified?
may he have certified?
may we have certified?
may you have certified?
may they have certified?

V-ing perfect

may I have been certifying?
may you have been certifying?
may he have been certifying?
may we have been certifying?
may you have been certifying?
may they have been certifying?

Interro-negative form

Simple form

may I not certify?
may you not certify?
may he not certify?
may we not certify?
may you not certify?
may they not certify?

V-ing form

may I not be certifying?
may you not be certifying?
may he not be certifying?
may we not be certifying?
may you not be certifying?
may they not be certifying?

Perfect

may I not have certified?
may you not have certified?
may he not have certified?
may we not have certified?
may you not have certified?
may they not have certified?

V-ing perfect

may I not have been certifying?
may you not have been certifying?
may he not have been certifying?
may we not have been certifying?
may you not have been certifying?
may they not have been certifying?

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