Conjugación del verbo inglés
MUST RETROFIT

Verbo irregular: retrofit - retrofit - retrofit

Afirmación

Forma simple	Forma con V-ing
I must retrofit you must retrofit he must retrofit we must retrofit you must retrofit they must retrofit	I must be retrofiting you must be retrofiting he must be retrofiting we must be retrofiting you must be retrofiting they must be retrofiting
Perfecto	Perfecto con V-ing
I must have retrofit you must have retrofit he must have retrofit we must have retrofit you must have retrofit they must have retrofit	I must have been retrofiting you must have been retrofiting he must have been retrofiting we must have been retrofiting you must have been retrofiting they must have been retrofiting

Negación

Forma simple	Forma con V-ing
I must not retrofit you must not retrofit he must not retrofit we must not retrofit you must not retrofit they must not retrofit	I must not be retrofiting you must not be retrofiting he must not be retrofiting we must not be retrofiting you must not be retrofiting they must not be retrofiting
Perfecto	Perfecto con V-ing
I must not have retrofit you must not have retrofit he must not have retrofit we must not have retrofit you must not have retrofit they must not have retrofit	I must not have been retrofiting you must not have been retrofiting he must not have been retrofiting we must not have been retrofiting you must not have been retrofiting they must not have been retrofiting

Forma interrogativa

Forma simple	Forma con V-ing
must I retrofit? must you retrofit? must he retrofit? must we retrofit? must you retrofit? must they retrofit?	must I be retrofiting? must you be retrofiting? must he be retrofiting? must we be retrofiting? must you be retrofiting? must they be retrofiting?
Perfecto	Perfecto con V-ing
must I have retrofit? must you have retrofit? must he have retrofit? must we have retrofit? must you have retrofit? must they have retrofit?	must I have been retrofiting? must you have been retrofiting? must he have been retrofiting? must we have been retrofiting? must you have been retrofiting? must they have been retrofiting?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not retrofit? must you not retrofit? must he not retrofit? must we not retrofit? must you not retrofit? must they not retrofit?	must I not be retrofiting? must you not be retrofiting? must he not be retrofiting? must we not be retrofiting? must you not be retrofiting? must they not be retrofiting?
Perfecto	Perfecto con V-ing
must I not have retrofit? must you not have retrofit? must he not have retrofit? must we not have retrofit? must you not have retrofit? must they not have retrofit?	must I not have been retrofiting? must you not have been retrofiting? must he not have been retrofiting? must we not have been retrofiting? must you not have been retrofiting? must they not have been retrofiting?