Conjugaison du verbe anglais
MUST SPIFF

Verbe régulier : spiff - spiffed - spiffed

Affirmation

Forme simple	Forme en V-ing
I must spiff you must spiff she must spiff we must spiff you must spiff they must spiff	I must be spiffing you must be spiffing she must be spiffing we must be spiffing you must be spiffing they must be spiffing
Perfect	Perfect en V-ing
I must have spiffed you must have spiffed she must have spiffed we must have spiffed you must have spiffed they must have spiffed	I must have been spiffing you must have been spiffing she must have been spiffing we must have been spiffing you must have been spiffing they must have been spiffing

Négation

Forme simple	Forme en V-ing
I must not spiff you must not spiff she must not spiff we must not spiff you must not spiff they must not spiff	I must not be spiffing you must not be spiffing she must not be spiffing we must not be spiffing you must not be spiffing they must not be spiffing
Perfect	Perfect en V-ing
I must not have spiffed you must not have spiffed she must not have spiffed we must not have spiffed you must not have spiffed they must not have spiffed	I must not have been spiffing you must not have been spiffing she must not have been spiffing we must not have been spiffing you must not have been spiffing they must not have been spiffing

Forme interrogative

Forme simple	Forme en V-ing
must I spiff? must you spiff? must she spiff? must we spiff? must you spiff? must they spiff?	must I be spiffing? must you be spiffing? must she be spiffing? must we be spiffing? must you be spiffing? must they be spiffing?
Perfect	Perfect en V-ing
must I have spiffed? must you have spiffed? must she have spiffed? must we have spiffed? must you have spiffed? must they have spiffed?	must I have been spiffing? must you have been spiffing? must she have been spiffing? must we have been spiffing? must you have been spiffing? must they have been spiffing?

Forme interro-négative

Forme simple	Forme en V-ing
must I not spiff? must you not spiff? must she not spiff? must we not spiff? must you not spiff? must they not spiff?	must I not be spiffing? must you not be spiffing? must she not be spiffing? must we not be spiffing? must you not be spiffing? must they not be spiffing?
Perfect	Perfect en V-ing
must I not have spiffed? must you not have spiffed? must she not have spiffed? must we not have spiffed? must you not have spiffed? must they not have spiffed?	must I not have been spiffing? must you not have been spiffing? must she not have been spiffing? must we not have been spiffing? must you not have been spiffing? must they not have been spiffing?