Coniugazione del verbo inglese
CAN FIRM

Verbo regolare: firm - firmed - firmed

Affermazione

Forma semplice	Forma con V-ing
I can firm you can firm she can firm we can firm you can firm they can firm	I can be firming you can be firming she can be firming we can be firming you can be firming they can be firming
Perfetto	Perfetto con V-ing
I can have firmed you can have firmed she can have firmed we can have firmed you can have firmed they can have firmed	I can have been firming you can have been firming she can have been firming we can have been firming you can have been firming they can have been firming

Negazione

Forma semplice	Forma con V-ing
I can't firm you can't firm she can't firm we can't firm you can't firm they can't firm	I can't be firming you can't be firming she can't be firming we can't be firming you can't be firming they can't be firming
Perfetto	Perfetto con V-ing
I can't have firmed you can't have firmed she can't have firmed we can't have firmed you can't have firmed they can't have firmed	I can't have been firming you can't have been firming she can't have been firming we can't have been firming you can't have been firming they can't have been firming

Forma interrogativa

Forma semplice	Forma con V-ing
can I firm? can you firm? can she firm? can we firm? can you firm? can they firm?	can I be firming? can you be firming? can she be firming? can we be firming? can you be firming? can they be firming?
Perfetto	Perfetto con V-ing
can I have firmed? can you have firmed? can she have firmed? can we have firmed? can you have firmed? can they have firmed?	can I have been firming? can you have been firming? can she have been firming? can we have been firming? can you have been firming? can they have been firming?

Forma interro-negativa

Forma semplice	Forma con V-ing
can't I firm? can't you firm? can't she firm? can't we firm? can't you firm? can't they firm?	can't I be firming? can't you be firming? can't she be firming? can't we be firming? can't you be firming? can't they be firming?
Perfetto	Perfetto con V-ing
can't I have firmed? can't you have firmed? can't she have firmed? can't we have firmed? can't you have firmed? can't they have firmed?	can't I have been firming? can't you have been firming? can't she have been firming? can't we have been firming? can't you have been firming? can't they have been firming?