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female gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation MUST GUFFAW

Regular verb: guffaw - guffawed - guffawed


Affirmation

Simple form
I must guffaw
you must guffaw
he must guffaw
we must guffaw
you must guffaw
they must guffaw
V-ing form
I must be guffawing
you must be guffawing
he must be guffawing
we must be guffawing
you must be guffawing
they must be guffawing
Perfect
I must have guffawed
you must have guffawed
he must have guffawed
we must have guffawed
you must have guffawed
they must have guffawed
V-ing perfect
I must have been guffawing
you must have been guffawing
he must have been guffawing
we must have been guffawing
you must have been guffawing
they must have been guffawing

Negation

Simple form
I must not guffaw
you must not guffaw
he must not guffaw
we must not guffaw
you must not guffaw
they must not guffaw
V-ing form
I must not be guffawing
you must not be guffawing
he must not be guffawing
we must not be guffawing
you must not be guffawing
they must not be guffawing
Perfect
I must not have guffawed
you must not have guffawed
he must not have guffawed
we must not have guffawed
you must not have guffawed
they must not have guffawed
V-ing perfect
I must not have been guffawing
you must not have been guffawing
he must not have been guffawing
we must not have been guffawing
you must not have been guffawing
they must not have been guffawing

Interrogative form

Simple form
must I guffaw?
must you guffaw?
must he guffaw?
must we guffaw?
must you guffaw?
must they guffaw?
V-ing form
must I be guffawing?
must you be guffawing?
must he be guffawing?
must we be guffawing?
must you be guffawing?
must they be guffawing?
Perfect
must I have guffawed?
must you have guffawed?
must he have guffawed?
must we have guffawed?
must you have guffawed?
must they have guffawed?
V-ing perfect
must I have been guffawing?
must you have been guffawing?
must he have been guffawing?
must we have been guffawing?
must you have been guffawing?
must they have been guffawing?

Interro-negative form

Simple form
must I not guffaw?
must you not guffaw?
must he not guffaw?
must we not guffaw?
must you not guffaw?
must they not guffaw?
V-ing form
must I not be guffawing?
must you not be guffawing?
must he not be guffawing?
must we not be guffawing?
must you not be guffawing?
must they not be guffawing?
Perfect
must I not have guffawed?
must you not have guffawed?
must he not have guffawed?
must we not have guffawed?
must you not have guffawed?
must they not have guffawed?
V-ing perfect
must I not have been guffawing?
must you not have been guffawing?
must he not have been guffawing?
must we not have been guffawing?
must you not have been guffawing?
must they not have been guffawing?