English verb conjugation MUST SNIFF

Regular verb: sniff - sniffed - sniffed

Affirmation

Simple form

I must sniff
you must sniff
he must sniff
we must sniff
you must sniff
they must sniff

V-ing form

I must be sniffing
you must be sniffing
he must be sniffing
we must be sniffing
you must be sniffing
they must be sniffing

Perfect

I must have sniffed
you must have sniffed
he must have sniffed
we must have sniffed
you must have sniffed
they must have sniffed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sniff?
must you sniff?
must he sniff?
must we sniff?
must you sniff?
must they sniff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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