English verb conjugation MUST DOUBLE

Regular verb: double - doubled - doubled


Affirmation

Simple form

I must double
you must double
he must double
we must double
you must double
they must double

V-ing form

I must be doubling
you must be doubling
he must be doubling
we must be doubling
you must be doubling
they must be doubling

Perfect

I must have doubled
you must have doubled
he must have doubled
we must have doubled
you must have doubled
they must have doubled

V-ing perfect

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

Negation

Simple form

I must not double
you must not double
he must not double
we must not double
you must not double
they must not double

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I double?
must you double?
must he double?
must we double?
must you double?
must they double?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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