Coniugazione del verbo inglese
MUST SUM

Verbo regolare: sum - summed - summed

Affermazione

Forma semplice	Forma con V-ing
I must sum you must sum she must sum we must sum you must sum they must sum	I must be summing you must be summing she must be summing we must be summing you must be summing they must be summing
Perfetto	Perfetto con V-ing
I must have summed you must have summed she must have summed we must have summed you must have summed they must have summed	I must have been summing you must have been summing she must have been summing we must have been summing you must have been summing they must have been summing

Negazione

Forma semplice	Forma con V-ing
I mustn't sum you mustn't sum she mustn't sum we mustn't sum you mustn't sum they mustn't sum	I mustn't be summing you mustn't be summing she mustn't be summing we mustn't be summing you mustn't be summing they mustn't be summing
Perfetto	Perfetto con V-ing
I mustn't have summed you mustn't have summed she mustn't have summed we mustn't have summed you mustn't have summed they mustn't have summed	I mustn't have been summing you mustn't have been summing she mustn't have been summing we mustn't have been summing you mustn't have been summing they mustn't have been summing

Forma interrogativa

Forma semplice	Forma con V-ing
must I sum? must you sum? must she sum? must we sum? must you sum? must they sum?	must I be summing? must you be summing? must she be summing? must we be summing? must you be summing? must they be summing?
Perfetto	Perfetto con V-ing
must I have summed? must you have summed? must she have summed? must we have summed? must you have summed? must they have summed?	must I have been summing? must you have been summing? must she have been summing? must we have been summing? must you have been summing? must they have been summing?

Forma interro-negativa

Forma semplice	Forma con V-ing
mustn't I sum? mustn't you sum? mustn't she sum? mustn't we sum? mustn't you sum? mustn't they sum?	mustn't I be summing? mustn't you be summing? mustn't she be summing? mustn't we be summing? mustn't you be summing? mustn't they be summing?
Perfetto	Perfetto con V-ing
mustn't I have summed? mustn't you have summed? mustn't she have summed? mustn't we have summed? mustn't you have summed? mustn't they have summed?	mustn't I have been summing? mustn't you have been summing? mustn't she have been summing? mustn't we have been summing? mustn't you have been summing? mustn't they have been summing?