I could stamp you could stamp she could stamp we could stamp you could stamp they could stamp
Forma com V-ing
I could be stamping you could be stamping she could be stamping we could be stamping you could be stamping they could be stamping
Perfeito
I could have stamped you could have stamped she could have stamped we could have stamped you could have stamped they could have stamped
Perfeito com V-ing
I could have been stamping you could have been stamping she could have been stamping we could have been stamping you could have been stamping they could have been stamping
Negação
Forma simple
I couldn't stamp you couldn't stamp she couldn't stamp we couldn't stamp you couldn't stamp they couldn't stamp
Forma com V-ing
I couldn't be stamping you couldn't be stamping she couldn't be stamping we couldn't be stamping you couldn't be stamping they couldn't be stamping
Perfeito
I couldn't have stamped you couldn't have stamped she couldn't have stamped we couldn't have stamped you couldn't have stamped they couldn't have stamped
Perfeito com V-ing
I couldn't have been stamping you couldn't have been stamping she couldn't have been stamping we couldn't have been stamping you couldn't have been stamping they couldn't have been stamping
Forma interrogativa
Forma simple
could I stamp? could you stamp? could she stamp? could we stamp? could you stamp? could they stamp?
Forma com V-ing
could I be stamping? could you be stamping? could she be stamping? could we be stamping? could you be stamping? could they be stamping?
Perfeito
could I have stamped? could you have stamped? could she have stamped? could we have stamped? could you have stamped? could they have stamped?
Perfeito com V-ing
could I have been stamping? could you have been stamping? could she have been stamping? could we have been stamping? could you have been stamping? could they have been stamping?
Forma interro-Negação
Forma simple
couldn't I stamp? couldn't you stamp? couldn't she stamp? couldn't we stamp? couldn't you stamp? couldn't they stamp?
Forma com V-ing
couldn't I be stamping? couldn't you be stamping? couldn't she be stamping? couldn't we be stamping? couldn't you be stamping? couldn't they be stamping?
Perfeito
couldn't I have stamped? couldn't you have stamped? couldn't she have stamped? couldn't we have stamped? couldn't you have stamped? couldn't they have stamped?
Perfeito com V-ing
couldn't I have been stamping? couldn't you have been stamping? couldn't she have been stamping? couldn't we have been stamping? couldn't you have been stamping? couldn't they have been stamping?