I could tick you could tick he could tick we could tick you could tick they could tick
Forma com V-ing
I could be ticking you could be ticking he could be ticking we could be ticking you could be ticking they could be ticking
Perfeito
I could have ticked you could have ticked he could have ticked we could have ticked you could have ticked they could have ticked
Perfeito com V-ing
I could have been ticking you could have been ticking he could have been ticking we could have been ticking you could have been ticking they could have been ticking
Negação
Forma simple
I couldn't tick you couldn't tick he couldn't tick we couldn't tick you couldn't tick they couldn't tick
Forma com V-ing
I couldn't be ticking you couldn't be ticking he couldn't be ticking we couldn't be ticking you couldn't be ticking they couldn't be ticking
Perfeito
I couldn't have ticked you couldn't have ticked he couldn't have ticked we couldn't have ticked you couldn't have ticked they couldn't have ticked
Perfeito com V-ing
I couldn't have been ticking you couldn't have been ticking he couldn't have been ticking we couldn't have been ticking you couldn't have been ticking they couldn't have been ticking
Forma interrogativa
Forma simple
could I tick? could you tick? could he tick? could we tick? could you tick? could they tick?
Forma com V-ing
could I be ticking? could you be ticking? could he be ticking? could we be ticking? could you be ticking? could they be ticking?
Perfeito
could I have ticked? could you have ticked? could he have ticked? could we have ticked? could you have ticked? could they have ticked?
Perfeito com V-ing
could I have been ticking? could you have been ticking? could he have been ticking? could we have been ticking? could you have been ticking? could they have been ticking?
Forma interro-Negação
Forma simple
couldn't I tick? couldn't you tick? couldn't he tick? couldn't we tick? couldn't you tick? couldn't they tick?
Forma com V-ing
couldn't I be ticking? couldn't you be ticking? couldn't he be ticking? couldn't we be ticking? couldn't you be ticking? couldn't they be ticking?
Perfeito
couldn't I have ticked? couldn't you have ticked? couldn't he have ticked? couldn't we have ticked? couldn't you have ticked? couldn't they have ticked?
Perfeito com V-ing
couldn't I have been ticking? couldn't you have been ticking? couldn't he have been ticking? couldn't we have been ticking? couldn't you have been ticking? couldn't they have been ticking?