I could shake you could shake he could shake we could shake you could shake they could shake
Forma com V-ing
I could be shaking you could be shaking he could be shaking we could be shaking you could be shaking they could be shaking
Perfeito
I could have shaken you could have shaken he could have shaken we could have shaken you could have shaken they could have shaken
Perfeito com V-ing
I could have been shaking you could have been shaking he could have been shaking we could have been shaking you could have been shaking they could have been shaking
Negação
Forma simple
I couldn't shake you couldn't shake he couldn't shake we couldn't shake you couldn't shake they couldn't shake
Forma com V-ing
I couldn't be shaking you couldn't be shaking he couldn't be shaking we couldn't be shaking you couldn't be shaking they couldn't be shaking
Perfeito
I couldn't have shaken you couldn't have shaken he couldn't have shaken we couldn't have shaken you couldn't have shaken they couldn't have shaken
Perfeito com V-ing
I couldn't have been shaking you couldn't have been shaking he couldn't have been shaking we couldn't have been shaking you couldn't have been shaking they couldn't have been shaking
Forma interrogativa
Forma simple
could I shake? could you shake? could he shake? could we shake? could you shake? could they shake?
Forma com V-ing
could I be shaking? could you be shaking? could he be shaking? could we be shaking? could you be shaking? could they be shaking?
Perfeito
could I have shaken? could you have shaken? could he have shaken? could we have shaken? could you have shaken? could they have shaken?
Perfeito com V-ing
could I have been shaking? could you have been shaking? could he have been shaking? could we have been shaking? could you have been shaking? could they have been shaking?
Forma interro-Negação
Forma simple
couldn't I shake? couldn't you shake? couldn't he shake? couldn't we shake? couldn't you shake? couldn't they shake?
Forma com V-ing
couldn't I be shaking? couldn't you be shaking? couldn't he be shaking? couldn't we be shaking? couldn't you be shaking? couldn't they be shaking?
Perfeito
couldn't I have shaken? couldn't you have shaken? couldn't he have shaken? couldn't we have shaken? couldn't you have shaken? couldn't they have shaken?
Perfeito com V-ing
couldn't I have been shaking? couldn't you have been shaking? couldn't he have been shaking? couldn't we have been shaking? couldn't you have been shaking? couldn't they have been shaking?