must backdate
Verbo regolare: backdate - backdated- backdated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must backdate
you must backdate
she must backdate
we must backdate
you must backdate
they must backdate 	I must be backdating
you must be backdating
she must be backdating
we must be backdating
you must be backdating
they must be backdating	I must have backdated
you must have backdated
she must have backdated
we must have backdated
you must have backdated
they must have backdated	I must have been backdating
you must have been backdating
she must have been backdating
we must have been backdating
you must have been backdating
they must have been backdating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not backdate
you must not backdate
she must not backdate
we must not backdate
you must not backdate
they must not backdate 	I must not be backdating
you must not be backdating
she must not be backdating
we must not be backdating
you must not be backdating
they must not be backdating	I must not have backdated
you must not have backdated
she must not have backdated
we must not have backdated
you must not have backdated
they must not have backdated	I must not have been backdating
you must not have been backdating
she must not have been backdating
we must not have been backdating
you must not have been backdating
they must not have been backdating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I backdate?
must you backdate?
must she backdate?
must we backdate?
must you backdate?
must they backdate? 	must I be backdating?
must you be backdating?
must she be backdating?
must we be backdating?
must you be backdating?
must they be backdating? 	must I have backdated?
must you have backdated?
must she have backdated?
must we have backdated?
must you have backdated?
must they have backdated? 	must I have been backdating?
must you have been backdating?
must she have been backdating?
must we have been backdating?
must you have been backdating?
must they have been backdating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not backdate?
must you not backdate?
must she not backdate?
must we not backdate?
must you not backdate?
must they not backdate? 	must I not be backdating?
must you not be backdating?
must she not be backdating?
must we not be backdating?
must you not be backdating?
must they not be backdating? 	must I not have backdated?
must you not have backdated?
must she not have backdated?
must we not have backdated?
must you not have backdated?
must they not have backdated? 	must I not have been backdating?
must you not have been backdating?
must she not have been backdating?
must we not have been backdating?
must you not have been backdating?
must they not have been backdating?