Coniugazione del verbo inglese
MUST RETROACT

Verbo regolare: retroact - retroacted - retroacted

Affermazione

Forma semplice	Forma con V-ing
I must retroact you must retroact she must retroact we must retroact you must retroact they must retroact	I must be retroacting you must be retroacting she must be retroacting we must be retroacting you must be retroacting they must be retroacting
Perfetto	Perfetto con V-ing
I must have retroacted you must have retroacted she must have retroacted we must have retroacted you must have retroacted they must have retroacted	I must have been retroacting you must have been retroacting she must have been retroacting we must have been retroacting you must have been retroacting they must have been retroacting

Negazione

Forma semplice	Forma con V-ing
I must not retroact you must not retroact she must not retroact we must not retroact you must not retroact they must not retroact	I must not be retroacting you must not be retroacting she must not be retroacting we must not be retroacting you must not be retroacting they must not be retroacting
Perfetto	Perfetto con V-ing
I must not have retroacted you must not have retroacted she must not have retroacted we must not have retroacted you must not have retroacted they must not have retroacted	I must not have been retroacting you must not have been retroacting she must not have been retroacting we must not have been retroacting you must not have been retroacting they must not have been retroacting

Forma interrogativa

Forma semplice	Forma con V-ing
must I retroact? must you retroact? must she retroact? must we retroact? must you retroact? must they retroact?	must I be retroacting? must you be retroacting? must she be retroacting? must we be retroacting? must you be retroacting? must they be retroacting?
Perfetto	Perfetto con V-ing
must I have retroacted? must you have retroacted? must she have retroacted? must we have retroacted? must you have retroacted? must they have retroacted?	must I have been retroacting? must you have been retroacting? must she have been retroacting? must we have been retroacting? must you have been retroacting? must they have been retroacting?

Forma interro-negativa

Forma semplice	Forma con V-ing
must I not retroact? must you not retroact? must she not retroact? must we not retroact? must you not retroact? must they not retroact?	must I not be retroacting? must you not be retroacting? must she not be retroacting? must we not be retroacting? must you not be retroacting? must they not be retroacting?
Perfetto	Perfetto con V-ing
must I not have retroacted? must you not have retroacted? must she not have retroacted? must we not have retroacted? must you not have retroacted? must they not have retroacted?	must I not have been retroacting? must you not have been retroacting? must she not have been retroacting? must we not have been retroacting? must you not have been retroacting? must they not have been retroacting?