English verb conjugation MUST SIFT

Regular verb: sift - sifted - sifted

Affirmation

Simple form

I must sift
you must sift
he must sift
we must sift
you must sift
they must sift

V-ing form

I must be sifting
you must be sifting
he must be sifting
we must be sifting
you must be sifting
they must be sifting

Perfect

I must have sifted
you must have sifted
he must have sifted
we must have sifted
you must have sifted
they must have sifted

V-ing perfect

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

Negation

Simple form

I must not sift
you must not sift
he must not sift
we must not sift
you must not sift
they must not sift

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sift?
must you sift?
must he sift?
must we sift?
must you sift?
must they sift?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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