English verb conjugation MUST GRIND

Irregular verb: grind - ground - ground

Affirmation

Simple form

I must grind
you must grind
he must grind
we must grind
you must grind
they must grind

V-ing form

I must be grinding
you must be grinding
he must be grinding
we must be grinding
you must be grinding
they must be grinding

Perfect

I must have ground
you must have ground
he must have ground
we must have ground
you must have ground
they must have ground

V-ing perfect

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

Negation

Simple form

I mustn't grind
you mustn't grind
he mustn't grind
we mustn't grind
you mustn't grind
they mustn't grind

V-ing form

I mustn't be grinding
you mustn't be grinding
he mustn't be grinding
we mustn't be grinding
you mustn't be grinding
they mustn't be grinding

Perfect

I mustn't have ground
you mustn't have ground
he mustn't have ground
we mustn't have ground
you mustn't have ground
they mustn't have ground

V-ing perfect

I mustn't have been grinding
you mustn't have been grinding
he mustn't have been grinding
we mustn't have been grinding
you mustn't have been grinding
they mustn't have been grinding

Interrogative form

Simple form

must I grind?
must you grind?
must he grind?
must we grind?
must you grind?
must they grind?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I grind?
mustn't you grind?
mustn't he grind?
mustn't we grind?
mustn't you grind?
mustn't they grind?

V-ing form

mustn't I be grinding?
mustn't you be grinding?
mustn't he be grinding?
mustn't we be grinding?
mustn't you be grinding?
mustn't they be grinding?

Perfect

mustn't I have ground?
mustn't you have ground?
mustn't he have ground?
mustn't we have ground?
mustn't you have ground?
mustn't they have ground?

V-ing perfect

mustn't I have been grinding?
mustn't you have been grinding?
mustn't he have been grinding?
mustn't we have been grinding?
mustn't you have been grinding?
mustn't they have been grinding?

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