I could skid you could skid he could skid we could skid you could skid they could skid
Forma com V-ing
I could be skidding you could be skidding he could be skidding we could be skidding you could be skidding they could be skidding
Perfeito
I could have skidded you could have skidded he could have skidded we could have skidded you could have skidded they could have skidded
Perfeito com V-ing
I could have been skidding you could have been skidding he could have been skidding we could have been skidding you could have been skidding they could have been skidding
Negação
Forma simple
I couldn't skid you couldn't skid he couldn't skid we couldn't skid you couldn't skid they couldn't skid
Forma com V-ing
I couldn't be skidding you couldn't be skidding he couldn't be skidding we couldn't be skidding you couldn't be skidding they couldn't be skidding
Perfeito
I couldn't have skidded you couldn't have skidded he couldn't have skidded we couldn't have skidded you couldn't have skidded they couldn't have skidded
Perfeito com V-ing
I couldn't have been skidding you couldn't have been skidding he couldn't have been skidding we couldn't have been skidding you couldn't have been skidding they couldn't have been skidding
Forma interrogativa
Forma simple
could I skid? could you skid? could he skid? could we skid? could you skid? could they skid?
Forma com V-ing
could I be skidding? could you be skidding? could he be skidding? could we be skidding? could you be skidding? could they be skidding?
Perfeito
could I have skidded? could you have skidded? could he have skidded? could we have skidded? could you have skidded? could they have skidded?
Perfeito com V-ing
could I have been skidding? could you have been skidding? could he have been skidding? could we have been skidding? could you have been skidding? could they have been skidding?
Forma interro-Negação
Forma simple
couldn't I skid? couldn't you skid? couldn't he skid? couldn't we skid? couldn't you skid? couldn't they skid?
Forma com V-ing
couldn't I be skidding? couldn't you be skidding? couldn't he be skidding? couldn't we be skidding? couldn't you be skidding? couldn't they be skidding?
Perfeito
couldn't I have skidded? couldn't you have skidded? couldn't he have skidded? couldn't we have skidded? couldn't you have skidded? couldn't they have skidded?
Perfeito com V-ing
couldn't I have been skidding? couldn't you have been skidding? couldn't he have been skidding? couldn't we have been skidding? couldn't you have been skidding? couldn't they have been skidding?