Coniugazione del verbo inglese
MUST ERR

Verbo regolare: err - erred - erred

Affermazione

Forma semplice	Forma con V-ing
I must err you must err he must err we must err you must err they must err	I must be erring you must be erring he must be erring we must be erring you must be erring they must be erring
Perfetto	Perfetto con V-ing
I must have erred you must have erred he must have erred we must have erred you must have erred they must have erred	I must have been erring you must have been erring he must have been erring we must have been erring you must have been erring they must have been erring

Negazione

Forma semplice	Forma con V-ing
I mustn't err you mustn't err he mustn't err we mustn't err you mustn't err they mustn't err	I mustn't be erring you mustn't be erring he mustn't be erring we mustn't be erring you mustn't be erring they mustn't be erring
Perfetto	Perfetto con V-ing
I mustn't have erred you mustn't have erred he mustn't have erred we mustn't have erred you mustn't have erred they mustn't have erred	I mustn't have been erring you mustn't have been erring he mustn't have been erring we mustn't have been erring you mustn't have been erring they mustn't have been erring

Forma interrogativa

Forma semplice	Forma con V-ing
must I err? must you err? must he err? must we err? must you err? must they err?	must I be erring? must you be erring? must he be erring? must we be erring? must you be erring? must they be erring?
Perfetto	Perfetto con V-ing
must I have erred? must you have erred? must he have erred? must we have erred? must you have erred? must they have erred?	must I have been erring? must you have been erring? must he have been erring? must we have been erring? must you have been erring? must they have been erring?

Forma interro-negativa

Forma semplice	Forma con V-ing
mustn't I err? mustn't you err? mustn't he err? mustn't we err? mustn't you err? mustn't they err?	mustn't I be erring? mustn't you be erring? mustn't he be erring? mustn't we be erring? mustn't you be erring? mustn't they be erring?
Perfetto	Perfetto con V-ing
mustn't I have erred? mustn't you have erred? mustn't he have erred? mustn't we have erred? mustn't you have erred? mustn't they have erred?	mustn't I have been erring? mustn't you have been erring? mustn't he have been erring? mustn't we have been erring? mustn't you have been erring? mustn't they have been erring?