could surface
Verbe régulier : surface - surfaced- surfaced
Traduction française : faire surface - revêtir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could surface
you could surface
she could surface
we could surface
you could surface
they could surface 	I could be surfacing
you could be surfacing
she could be surfacing
we could be surfacing
you could be surfacing
they could be surfacing	I could have surfaced
you could have surfaced
she could have surfaced
we could have surfaced
you could have surfaced
they could have surfaced	I could have been surfacing
you could have been surfacing
she could have been surfacing
we could have been surfacing
you could have been surfacing
they could have been surfacing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't surface
you couldn't surface
she couldn't surface
we couldn't surface
you couldn't surface
they couldn't surface 	I couldn't be surfacing
you couldn't be surfacing
she couldn't be surfacing
we couldn't be surfacing
you couldn't be surfacing
they couldn't be surfacing	I couldn't have surfaced
you couldn't have surfaced
she couldn't have surfaced
we couldn't have surfaced
you couldn't have surfaced
they couldn't have surfaced	I couldn't have been surfacing
you couldn't have been surfacing
she couldn't have been surfacing
we couldn't have been surfacing
you couldn't have been surfacing
they couldn't have been surfacing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I surface?
could you surface?
could she surface?
could we surface?
could you surface?
could they surface? 	could I be surfacing?
could you be surfacing?
could she be surfacing?
could we be surfacing?
could you be surfacing?
could they be surfacing? 	could I have surfaced?
could you have surfaced?
could she have surfaced?
could we have surfaced?
could you have surfaced?
could they have surfaced? 	could I have been surfacing?
could you have been surfacing?
could she have been surfacing?
could we have been surfacing?
could you have been surfacing?
could they have been surfacing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I surface?
couldn't you surface?
couldn't she surface?
couldn't we surface?
couldn't you surface?
couldn't they surface? 	couldn't I be surfacing?
couldn't you be surfacing?
couldn't she be surfacing?
couldn't we be surfacing?
couldn't you be surfacing?
couldn't they be surfacing? 	couldn't I have surfaced?
couldn't you have surfaced?
couldn't she have surfaced?
couldn't we have surfaced?
couldn't you have surfaced?
couldn't they have surfaced? 	couldn't I have been surfacing?
couldn't you have been surfacing?
couldn't she have been surfacing?
couldn't we have been surfacing?
couldn't you have been surfacing?
couldn't they have been surfacing?