I could push you could push he could push we could push you could push they could push
Forma con V-ing
I could be pushing you could be pushing he could be pushing we could be pushing you could be pushing they could be pushing
Perfecto
I could have pushed you could have pushed he could have pushed we could have pushed you could have pushed they could have pushed
Perfecto con V-ing
I could have been pushing you could have been pushing he could have been pushing we could have been pushing you could have been pushing they could have been pushing
Negación
Forma simple
I couldn't push you couldn't push he couldn't push we couldn't push you couldn't push they couldn't push
Forma con V-ing
I couldn't be pushing you couldn't be pushing he couldn't be pushing we couldn't be pushing you couldn't be pushing they couldn't be pushing
Perfecto
I couldn't have pushed you couldn't have pushed he couldn't have pushed we couldn't have pushed you couldn't have pushed they couldn't have pushed
Perfecto con V-ing
I couldn't have been pushing you couldn't have been pushing he couldn't have been pushing we couldn't have been pushing you couldn't have been pushing they couldn't have been pushing
Forma interrogativa
Forma simple
could I push? could you push? could he push? could we push? could you push? could they push?
Forma con V-ing
could I be pushing? could you be pushing? could he be pushing? could we be pushing? could you be pushing? could they be pushing?
Perfecto
could I have pushed? could you have pushed? could he have pushed? could we have pushed? could you have pushed? could they have pushed?
Perfecto con V-ing
could I have been pushing? could you have been pushing? could he have been pushing? could we have been pushing? could you have been pushing? could they have been pushing?
Forma interro-negativa
Forma simple
couldn't I push? couldn't you push? couldn't he push? couldn't we push? couldn't you push? couldn't they push?
Forma con V-ing
couldn't I be pushing? couldn't you be pushing? couldn't he be pushing? couldn't we be pushing? couldn't you be pushing? couldn't they be pushing?
Perfecto
couldn't I have pushed? couldn't you have pushed? couldn't he have pushed? couldn't we have pushed? couldn't you have pushed? couldn't they have pushed?
Perfecto con V-ing
couldn't I have been pushing? couldn't you have been pushing? couldn't he have been pushing? couldn't we have been pushing? couldn't you have been pushing? couldn't they have been pushing?