English verb conjugation MUST SNIFF

Regular verb: sniff - sniffed - sniffed

Affirmation

Simple form

I must sniff
you must sniff
she must sniff
we must sniff
you must sniff
they must sniff

V-ing form

I must be sniffing
you must be sniffing
she must be sniffing
we must be sniffing
you must be sniffing
they must be sniffing

Perfect

I must have sniffed
you must have sniffed
she 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
she 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
she 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
she 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
she 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
she 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 she sniff?
must we sniff?
must you sniff?
must they sniff?

V-ing form

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

Perfect

must I have sniffed?
must you have sniffed?
must she 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 she 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 she 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 she 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 she 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 she 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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