I must stir you must stir she must stir we must stir you must stir they must stir
Forma con V-ing
I must be stirring you must be stirring she must be stirring we must be stirring you must be stirring they must be stirring
Perfecto
I must have stirred you must have stirred she must have stirred we must have stirred you must have stirred they must have stirred
Perfecto con V-ing
I must have been stirring you must have been stirring she must have been stirring we must have been stirring you must have been stirring they must have been stirring
Negación
Forma simple
I mustn't stir you mustn't stir she mustn't stir we mustn't stir you mustn't stir they mustn't stir
Forma con V-ing
I mustn't be stirring you mustn't be stirring she mustn't be stirring we mustn't be stirring you mustn't be stirring they mustn't be stirring
Perfecto
I mustn't have stirred you mustn't have stirred she mustn't have stirred we mustn't have stirred you mustn't have stirred they mustn't have stirred
Perfecto con V-ing
I mustn't have been stirring you mustn't have been stirring she mustn't have been stirring we mustn't have been stirring you mustn't have been stirring they mustn't have been stirring
Forma interrogativa
Forma simple
must I stir? must you stir? must she stir? must we stir? must you stir? must they stir?
Forma con V-ing
must I be stirring? must you be stirring? must she be stirring? must we be stirring? must you be stirring? must they be stirring?
Perfecto
must I have stirred? must you have stirred? must she have stirred? must we have stirred? must you have stirred? must they have stirred?
Perfecto con V-ing
must I have been stirring? must you have been stirring? must she have been stirring? must we have been stirring? must you have been stirring? must they have been stirring?
Forma interro-negativa
Forma simple
mustn't I stir? mustn't you stir? mustn't she stir? mustn't we stir? mustn't you stir? mustn't they stir?
Forma con V-ing
mustn't I be stirring? mustn't you be stirring? mustn't she be stirring? mustn't we be stirring? mustn't you be stirring? mustn't they be stirring?
Perfecto
mustn't I have stirred? mustn't you have stirred? mustn't she have stirred? mustn't we have stirred? mustn't you have stirred? mustn't they have stirred?
Perfecto con V-ing
mustn't I have been stirring? mustn't you have been stirring? mustn't she have been stirring? mustn't we have been stirring? mustn't you have been stirring? mustn't they have been stirring?