could vouch
Verbe régulier : vouch - vouched- vouched
Traduction française : se porter garant de quelqu'un ou quelque chose 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could vouch
you could vouch
he could vouch
we could vouch
you could vouch
they could vouch 	I could be vouching
you could be vouching
he could be vouching
we could be vouching
you could be vouching
they could be vouching	I could have vouched
you could have vouched
he could have vouched
we could have vouched
you could have vouched
they could have vouched	I could have been vouching
you could have been vouching
he could have been vouching
we could have been vouching
you could have been vouching
they could have been vouching	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't vouch
you couldn't vouch
he couldn't vouch
we couldn't vouch
you couldn't vouch
they couldn't vouch 	I couldn't be vouching
you couldn't be vouching
he couldn't be vouching
we couldn't be vouching
you couldn't be vouching
they couldn't be vouching	I couldn't have vouched
you couldn't have vouched
he couldn't have vouched
we couldn't have vouched
you couldn't have vouched
they couldn't have vouched	I couldn't have been vouching
you couldn't have been vouching
he couldn't have been vouching
we couldn't have been vouching
you couldn't have been vouching
they couldn't have been vouching	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I vouch?
could you vouch?
could he vouch?
could we vouch?
could you vouch?
could they vouch? 	could I be vouching?
could you be vouching?
could he be vouching?
could we be vouching?
could you be vouching?
could they be vouching? 	could I have vouched?
could you have vouched?
could he have vouched?
could we have vouched?
could you have vouched?
could they have vouched? 	could I have been vouching?
could you have been vouching?
could he have been vouching?
could we have been vouching?
could you have been vouching?
could they have been vouching? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I vouch?
couldn't you vouch?
couldn't he vouch?
couldn't we vouch?
couldn't you vouch?
couldn't they vouch? 	couldn't I be vouching?
couldn't you be vouching?
couldn't he be vouching?
couldn't we be vouching?
couldn't you be vouching?
couldn't they be vouching? 	couldn't I have vouched?
couldn't you have vouched?
couldn't he have vouched?
couldn't we have vouched?
couldn't you have vouched?
couldn't they have vouched? 	couldn't I have been vouching?
couldn't you have been vouching?
couldn't he have been vouching?
couldn't we have been vouching?
couldn't you have been vouching?
couldn't they have been vouching?