Conjugaison du verbe anglais
CAN RIFF

Verbe régulier : riff - riffed - riffed

Affirmation

Forme simple	Forme en V-ing
I can riff you can riff she can riff we can riff you can riff they can riff	I can be riffing you can be riffing she can be riffing we can be riffing you can be riffing they can be riffing
Perfect	Perfect en V-ing
I can have riffed you can have riffed she can have riffed we can have riffed you can have riffed they can have riffed	I can have been riffing you can have been riffing she can have been riffing we can have been riffing you can have been riffing they can have been riffing

Négation

Forme simple	Forme en V-ing
I cannot riff you cannot riff she cannot riff we cannot riff you cannot riff they cannot riff	I cannot be riffing you cannot be riffing she cannot be riffing we cannot be riffing you cannot be riffing they cannot be riffing
Perfect	Perfect en V-ing
I cannot have riffed you cannot have riffed she cannot have riffed we cannot have riffed you cannot have riffed they cannot have riffed	I cannot have been riffing you cannot have been riffing she cannot have been riffing we cannot have been riffing you cannot have been riffing they cannot have been riffing

Forme interrogative

Forme simple	Forme en V-ing
can I riff? can you riff? can she riff? can we riff? can you riff? can they riff?	can I be riffing? can you be riffing? can she be riffing? can we be riffing? can you be riffing? can they be riffing?
Perfect	Perfect en V-ing
can I have riffed? can you have riffed? can she have riffed? can we have riffed? can you have riffed? can they have riffed?	can I have been riffing? can you have been riffing? can she have been riffing? can we have been riffing? can you have been riffing? can they have been riffing?

Forme interro-négative

Forme simple	Forme en V-ing
can I not riff? can you not riff? can she not riff? can we not riff? can you not riff? can they not riff?	can I not be riffing? can you not be riffing? can she not be riffing? can we not be riffing? can you not be riffing? can they not be riffing?
Perfect	Perfect en V-ing
can I not have riffed? can you not have riffed? can she not have riffed? can we not have riffed? can you not have riffed? can they not have riffed?	can I not have been riffing? can you not have been riffing? can she not have been riffing? can we not have been riffing? can you not have been riffing? can they not have been riffing?