English verb conjugation MUST ASSIST

Regular verb: assist - assisted - assisted

Affirmation

Simple form

I must assist
you must assist
he must assist
we must assist
you must assist
they must assist

V-ing form

I must be assisting
you must be assisting
he must be assisting
we must be assisting
you must be assisting
they must be assisting

Perfect

I must have assisted
you must have assisted
he must have assisted
we must have assisted
you must have assisted
they must have assisted

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I assist?
must you assist?
must he assist?
must we assist?
must you assist?
must they assist?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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