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