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