could roost
Verbe régulier : roost - roosted- roosted
Traduction française : se percher - (se) jucher 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could roost
you could roost
she could roost
we could roost
you could roost
they could roost 	I could be roosting
you could be roosting
she could be roosting
we could be roosting
you could be roosting
they could be roosting	I could have roosted
you could have roosted
she could have roosted
we could have roosted
you could have roosted
they could have roosted	I could have been roosting
you could have been roosting
she could have been roosting
we could have been roosting
you could have been roosting
they could have been roosting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not roost
you could not roost
she could not roost
we could not roost
you could not roost
they could not roost 	I could not be roosting
you could not be roosting
she could not be roosting
we could not be roosting
you could not be roosting
they could not be roosting	I could not have roosted
you could not have roosted
she could not have roosted
we could not have roosted
you could not have roosted
they could not have roosted	I could not have been roosting
you could not have been roosting
she could not have been roosting
we could not have been roosting
you could not have been roosting
they could not have been roosting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I roost?
could you roost?
could she roost?
could we roost?
could you roost?
could they roost? 	could I be roosting?
could you be roosting?
could she be roosting?
could we be roosting?
could you be roosting?
could they be roosting? 	could I have roosted?
could you have roosted?
could she have roosted?
could we have roosted?
could you have roosted?
could they have roosted? 	could I have been roosting?
could you have been roosting?
could she have been roosting?
could we have been roosting?
could you have been roosting?
could they have been roosting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not roost?
could you not roost?
could she not roost?
could we not roost?
could you not roost?
could they not roost? 	could I not be roosting?
could you not be roosting?
could she not be roosting?
could we not be roosting?
could you not be roosting?
could they not be roosting? 	could I not have roosted?
could you not have roosted?
could she not have roosted?
could we not have roosted?
could you not have roosted?
could they not have roosted? 	could I not have been roosting?
could you not have been roosting?
could she not have been roosting?
could we not have been roosting?
could you not have been roosting?
could they not have been roosting?