Coniugazione del verbo inglese
CAN SUM

Verbo regolare: sum - summed - summed

Affermazione

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

Negazione

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

Forma interrogativa

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

Forma interro-negativa

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