Attention, ce verbe peut ne pas exister, la conjugaison est donnée à titre d'exemple.
Affirmation
Forme simple
I must sniffer you must sniffer he must sniffer we must sniffer you must sniffer they must sniffer
Forme en V-ing
I must be sniffering you must be sniffering he must be sniffering we must be sniffering you must be sniffering they must be sniffering
Perfect
I must have sniffered you must have sniffered he must have sniffered we must have sniffered you must have sniffered they must have sniffered
Perfect en V-ing
I must have been sniffering you must have been sniffering he must have been sniffering we must have been sniffering you must have been sniffering they must have been sniffering
Négation
Forme simple
I mustn't sniffer you mustn't sniffer he mustn't sniffer we mustn't sniffer you mustn't sniffer they mustn't sniffer
Forme en V-ing
I mustn't be sniffering you mustn't be sniffering he mustn't be sniffering we mustn't be sniffering you mustn't be sniffering they mustn't be sniffering
Perfect
I mustn't have sniffered you mustn't have sniffered he mustn't have sniffered we mustn't have sniffered you mustn't have sniffered they mustn't have sniffered
Perfect en V-ing
I mustn't have been sniffering you mustn't have been sniffering he mustn't have been sniffering we mustn't have been sniffering you mustn't have been sniffering they mustn't have been sniffering
Forme interrogative
Forme simple
must I sniffer? must you sniffer? must he sniffer? must we sniffer? must you sniffer? must they sniffer?
Forme en V-ing
must I be sniffering? must you be sniffering? must he be sniffering? must we be sniffering? must you be sniffering? must they be sniffering?
Perfect
must I have sniffered? must you have sniffered? must he have sniffered? must we have sniffered? must you have sniffered? must they have sniffered?
Perfect en V-ing
must I have been sniffering? must you have been sniffering? must he have been sniffering? must we have been sniffering? must you have been sniffering? must they have been sniffering?
Forme interro-négative
Forme simple
mustn't I sniffer? mustn't you sniffer? mustn't he sniffer? mustn't we sniffer? mustn't you sniffer? mustn't they sniffer?
Forme en V-ing
mustn't I be sniffering? mustn't you be sniffering? mustn't he be sniffering? mustn't we be sniffering? mustn't you be sniffering? mustn't they be sniffering?
Perfect
mustn't I have sniffered? mustn't you have sniffered? mustn't he have sniffered? mustn't we have sniffered? mustn't you have sniffered? mustn't they have sniffered?
Perfect en V-ing
mustn't I have been sniffering? mustn't you have been sniffering? mustn't he have been sniffering? mustn't we have been sniffering? mustn't you have been sniffering? mustn't they have been sniffering?