Conjugaison du verbe anglais
MUST TIFF

Verbe régulier : tiff - tiffed - tiffed

Affirmation

Forme simple	Forme en V-ing
I must tiff you must tiff he must tiff we must tiff you must tiff they must tiff	I must be tiffing you must be tiffing he must be tiffing we must be tiffing you must be tiffing they must be tiffing
Perfect	Perfect en V-ing
I must have tiffed you must have tiffed he must have tiffed we must have tiffed you must have tiffed they must have tiffed	I must have been tiffing you must have been tiffing he must have been tiffing we must have been tiffing you must have been tiffing they must have been tiffing

Négation

Forme simple	Forme en V-ing
I mustn't tiff you mustn't tiff he mustn't tiff we mustn't tiff you mustn't tiff they mustn't tiff	I mustn't be tiffing you mustn't be tiffing he mustn't be tiffing we mustn't be tiffing you mustn't be tiffing they mustn't be tiffing
Perfect	Perfect en V-ing
I mustn't have tiffed you mustn't have tiffed he mustn't have tiffed we mustn't have tiffed you mustn't have tiffed they mustn't have tiffed	I mustn't have been tiffing you mustn't have been tiffing he mustn't have been tiffing we mustn't have been tiffing you mustn't have been tiffing they mustn't have been tiffing

Forme interrogative

Forme simple	Forme en V-ing
must I tiff? must you tiff? must he tiff? must we tiff? must you tiff? must they tiff?	must I be tiffing? must you be tiffing? must he be tiffing? must we be tiffing? must you be tiffing? must they be tiffing?
Perfect	Perfect en V-ing
must I have tiffed? must you have tiffed? must he have tiffed? must we have tiffed? must you have tiffed? must they have tiffed?	must I have been tiffing? must you have been tiffing? must he have been tiffing? must we have been tiffing? must you have been tiffing? must they have been tiffing?

Forme interro-négative

Forme simple	Forme en V-ing
mustn't I tiff? mustn't you tiff? mustn't he tiff? mustn't we tiff? mustn't you tiff? mustn't they tiff?	mustn't I be tiffing? mustn't you be tiffing? mustn't he be tiffing? mustn't we be tiffing? mustn't you be tiffing? mustn't they be tiffing?
Perfect	Perfect en V-ing
mustn't I have tiffed? mustn't you have tiffed? mustn't he have tiffed? mustn't we have tiffed? mustn't you have tiffed? mustn't they have tiffed?	mustn't I have been tiffing? mustn't you have been tiffing? mustn't he have been tiffing? mustn't we have been tiffing? mustn't you have been tiffing? mustn't they have been tiffing?