English verb conjugation MUST LEARN

Irregular verb: learn - learned, learnt - learned, learnt

Affirmation

Simple form

I must learn
you must learn
she must learn
we must learn
you must learn
they must learn

V-ing form

I must be learning
you must be learning
she must be learning
we must be learning
you must be learning
they must be learning

Perfect

I must have learned, learnt
you must have learned, learnt
she must have learned, learnt
we must have learned, learnt
you must have learned, learnt
they must have learned, learnt

V-ing perfect

I must have been learning
you must have been learning
she must have been learning
we must have been learning
you must have been learning
they must have been learning

Negation

Simple form

I mustn't learn
you mustn't learn
she mustn't learn
we mustn't learn
you mustn't learn
they mustn't learn

V-ing form

I mustn't be learning
you mustn't be learning
she mustn't be learning
we mustn't be learning
you mustn't be learning
they mustn't be learning

Perfect

I mustn't have learned, learnt
you mustn't have learned, learnt
she mustn't have learned, learnt
we mustn't have learned, learnt
you mustn't have learned, learnt
they mustn't have learned, learnt

V-ing perfect

I mustn't have been learning
you mustn't have been learning
she mustn't have been learning
we mustn't have been learning
you mustn't have been learning
they mustn't have been learning

Interrogative form

Simple form

must I learn?
must you learn?
must she learn?
must we learn?
must you learn?
must they learn?

V-ing form

must I be learning?
must you be learning?
must she be learning?
must we be learning?
must you be learning?
must they be learning?

Perfect

must I have learned, learnt?
must you have learned, learnt?
must she have learned, learnt?
must we have learned, learnt?
must you have learned, learnt?
must they have learned, learnt?

V-ing perfect

must I have been learning?
must you have been learning?
must she have been learning?
must we have been learning?
must you have been learning?
must they have been learning?

Interro-negative form

Simple form

mustn't I learn?
mustn't you learn?
mustn't she learn?
mustn't we learn?
mustn't you learn?
mustn't they learn?

V-ing form

mustn't I be learning?
mustn't you be learning?
mustn't she be learning?
mustn't we be learning?
mustn't you be learning?
mustn't they be learning?

Perfect

mustn't I have learned, learnt?
mustn't you have learned, learnt?
mustn't she have learned, learnt?
mustn't we have learned, learnt?
mustn't you have learned, learnt?
mustn't they have learned, learnt?

V-ing perfect

mustn't I have been learning?
mustn't you have been learning?
mustn't she have been learning?
mustn't we have been learning?
mustn't you have been learning?
mustn't they have been learning?

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