English verb conjugation MUST HELP

Regular verb: help - helped - helped

Affirmation

Simple form

I must help
you must help
he must help
we must help
you must help
they must help

V-ing form

I must be helping
you must be helping
he must be helping
we must be helping
you must be helping
they must be helping

Perfect

I must have helped
you must have helped
he must have helped
we must have helped
you must have helped
they must have helped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I help?
must you help?
must he help?
must we help?
must you help?
must they help?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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