should backdate
Verbo regular: backdate - backdated- backdated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should backdate
you should backdate
she should backdate
we should backdate
you should backdate
they should backdate 	I should be backdating
you should be backdating
she should be backdating
we should be backdating
you should be backdating
they should be backdating	I should have backdated
you should have backdated
she should have backdated
we should have backdated
you should have backdated
they should have backdated	I should have been backdating
you should have been backdating
she should have been backdating
we should have been backdating
you should have been backdating
they should have been backdating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not backdate
you should not backdate
she should not backdate
we should not backdate
you should not backdate
they should not backdate 	I should not be backdating
you should not be backdating
she should not be backdating
we should not be backdating
you should not be backdating
they should not be backdating	I should not have backdated
you should not have backdated
she should not have backdated
we should not have backdated
you should not have backdated
they should not have backdated	I should not have been backdating
you should not have been backdating
she should not have been backdating
we should not have been backdating
you should not have been backdating
they should not have been backdating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I backdate?
should you backdate?
should she backdate?
should we backdate?
should you backdate?
should they backdate? 	should I be backdating?
should you be backdating?
should she be backdating?
should we be backdating?
should you be backdating?
should they be backdating? 	should I have backdated?
should you have backdated?
should she have backdated?
should we have backdated?
should you have backdated?
should they have backdated? 	should I have been backdating?
should you have been backdating?
should she have been backdating?
should we have been backdating?
should you have been backdating?
should they have been backdating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not backdate?
should you not backdate?
should she not backdate?
should we not backdate?
should you not backdate?
should they not backdate? 	should I not be backdating?
should you not be backdating?
should she not be backdating?
should we not be backdating?
should you not be backdating?
should they not be backdating? 	should I not have backdated?
should you not have backdated?
should she not have backdated?
should we not have backdated?
should you not have backdated?
should they not have backdated? 	should I not have been backdating?
should you not have been backdating?
should she not have been backdating?
should we not have been backdating?
should you not have been backdating?
should they not have been backdating?