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