shall backdate
Verbo regular: backdate - backdated- backdated

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

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

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

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