Coniugazione del verbo inglese
MUST RETROGRESS

Verbo regolare: retrogress - retrogressed - retrogressed

Affermazione

Forma semplice	Forma con V-ing
I must retrogress you must retrogress she must retrogress we must retrogress you must retrogress they must retrogress	I must be retrogressing you must be retrogressing she must be retrogressing we must be retrogressing you must be retrogressing they must be retrogressing
Perfetto	Perfetto con V-ing
I must have retrogressed you must have retrogressed she must have retrogressed we must have retrogressed you must have retrogressed they must have retrogressed	I must have been retrogressing you must have been retrogressing she must have been retrogressing we must have been retrogressing you must have been retrogressing they must have been retrogressing

Negazione

Forma semplice	Forma con V-ing
I mustn't retrogress you mustn't retrogress she mustn't retrogress we mustn't retrogress you mustn't retrogress they mustn't retrogress	I mustn't be retrogressing you mustn't be retrogressing she mustn't be retrogressing we mustn't be retrogressing you mustn't be retrogressing they mustn't be retrogressing
Perfetto	Perfetto con V-ing
I mustn't have retrogressed you mustn't have retrogressed she mustn't have retrogressed we mustn't have retrogressed you mustn't have retrogressed they mustn't have retrogressed	I mustn't have been retrogressing you mustn't have been retrogressing she mustn't have been retrogressing we mustn't have been retrogressing you mustn't have been retrogressing they mustn't have been retrogressing

Forma interrogativa

Forma semplice	Forma con V-ing
must I retrogress? must you retrogress? must she retrogress? must we retrogress? must you retrogress? must they retrogress?	must I be retrogressing? must you be retrogressing? must she be retrogressing? must we be retrogressing? must you be retrogressing? must they be retrogressing?
Perfetto	Perfetto con V-ing
must I have retrogressed? must you have retrogressed? must she have retrogressed? must we have retrogressed? must you have retrogressed? must they have retrogressed?	must I have been retrogressing? must you have been retrogressing? must she have been retrogressing? must we have been retrogressing? must you have been retrogressing? must they have been retrogressing?

Forma interro-negativa

Forma semplice	Forma con V-ing
mustn't I retrogress? mustn't you retrogress? mustn't she retrogress? mustn't we retrogress? mustn't you retrogress? mustn't they retrogress?	mustn't I be retrogressing? mustn't you be retrogressing? mustn't she be retrogressing? mustn't we be retrogressing? mustn't you be retrogressing? mustn't they be retrogressing?
Perfetto	Perfetto con V-ing
mustn't I have retrogressed? mustn't you have retrogressed? mustn't she have retrogressed? mustn't we have retrogressed? mustn't you have retrogressed? mustn't they have retrogressed?	mustn't I have been retrogressing? mustn't you have been retrogressing? mustn't she have been retrogressing? mustn't we have been retrogressing? mustn't you have been retrogressing? mustn't they have been retrogressing?