could backdate
Verbe régulier : backdate - backdated- backdated
Traduction française : antidater 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could backdate
you could backdate
he could backdate
we could backdate
you could backdate
they could backdate 	I could be backdating
you could be backdating
he could be backdating
we could be backdating
you could be backdating
they could be backdating	I could have backdated
you could have backdated
he could have backdated
we could have backdated
you could have backdated
they could have backdated	I could have been backdating
you could have been backdating
he could have been backdating
we could have been backdating
you could have been backdating
they could have been backdating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't backdate
you couldn't backdate
he couldn't backdate
we couldn't backdate
you couldn't backdate
they couldn't backdate 	I couldn't be backdating
you couldn't be backdating
he couldn't be backdating
we couldn't be backdating
you couldn't be backdating
they couldn't be backdating	I couldn't have backdated
you couldn't have backdated
he couldn't have backdated
we couldn't have backdated
you couldn't have backdated
they couldn't have backdated	I couldn't have been backdating
you couldn't have been backdating
he couldn't have been backdating
we couldn't have been backdating
you couldn't have been backdating
they couldn't have been backdating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I backdate?
could you backdate?
could he backdate?
could we backdate?
could you backdate?
could they backdate? 	could I be backdating?
could you be backdating?
could he be backdating?
could we be backdating?
could you be backdating?
could they be backdating? 	could I have backdated?
could you have backdated?
could he have backdated?
could we have backdated?
could you have backdated?
could they have backdated? 	could I have been backdating?
could you have been backdating?
could he have been backdating?
could we have been backdating?
could you have been backdating?
could they have been backdating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I backdate?
couldn't you backdate?
couldn't he backdate?
couldn't we backdate?
couldn't you backdate?
couldn't they backdate? 	couldn't I be backdating?
couldn't you be backdating?
couldn't he be backdating?
couldn't we be backdating?
couldn't you be backdating?
couldn't they be backdating? 	couldn't I have backdated?
couldn't you have backdated?
couldn't he have backdated?
couldn't we have backdated?
couldn't you have backdated?
couldn't they have backdated? 	couldn't I have been backdating?
couldn't you have been backdating?
couldn't he have been backdating?
couldn't we have been backdating?
couldn't you have been backdating?
couldn't they have been backdating?