could roughen
Verbe régulier : roughen - roughened- roughened
Traduction française : rendre rugueux - devenir rugueux 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could roughen
you could roughen
she could roughen
we could roughen
you could roughen
they could roughen 	I could be roughening
you could be roughening
she could be roughening
we could be roughening
you could be roughening
they could be roughening	I could have roughened
you could have roughened
she could have roughened
we could have roughened
you could have roughened
they could have roughened	I could have been roughening
you could have been roughening
she could have been roughening
we could have been roughening
you could have been roughening
they could have been roughening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't roughen
you couldn't roughen
she couldn't roughen
we couldn't roughen
you couldn't roughen
they couldn't roughen 	I couldn't be roughening
you couldn't be roughening
she couldn't be roughening
we couldn't be roughening
you couldn't be roughening
they couldn't be roughening	I couldn't have roughened
you couldn't have roughened
she couldn't have roughened
we couldn't have roughened
you couldn't have roughened
they couldn't have roughened	I couldn't have been roughening
you couldn't have been roughening
she couldn't have been roughening
we couldn't have been roughening
you couldn't have been roughening
they couldn't have been roughening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I roughen?
could you roughen?
could she roughen?
could we roughen?
could you roughen?
could they roughen? 	could I be roughening?
could you be roughening?
could she be roughening?
could we be roughening?
could you be roughening?
could they be roughening? 	could I have roughened?
could you have roughened?
could she have roughened?
could we have roughened?
could you have roughened?
could they have roughened? 	could I have been roughening?
could you have been roughening?
could she have been roughening?
could we have been roughening?
could you have been roughening?
could they have been roughening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I roughen?
couldn't you roughen?
couldn't she roughen?
couldn't we roughen?
couldn't you roughen?
couldn't they roughen? 	couldn't I be roughening?
couldn't you be roughening?
couldn't she be roughening?
couldn't we be roughening?
couldn't you be roughening?
couldn't they be roughening? 	couldn't I have roughened?
couldn't you have roughened?
couldn't she have roughened?
couldn't we have roughened?
couldn't you have roughened?
couldn't they have roughened? 	couldn't I have been roughening?
couldn't you have been roughening?
couldn't she have been roughening?
couldn't we have been roughening?
couldn't you have been roughening?
couldn't they have been roughening?