I could behave you could behave he could behave we could behave you could behave they could behave
Forma com V-ing
I could be behaving you could be behaving he could be behaving we could be behaving you could be behaving they could be behaving
Perfeito
I could have behaved you could have behaved he could have behaved we could have behaved you could have behaved they could have behaved
Perfeito com V-ing
I could have been behaving you could have been behaving he could have been behaving we could have been behaving you could have been behaving they could have been behaving
Negação
Forma simple
I couldn't behave you couldn't behave he couldn't behave we couldn't behave you couldn't behave they couldn't behave
Forma com V-ing
I couldn't be behaving you couldn't be behaving he couldn't be behaving we couldn't be behaving you couldn't be behaving they couldn't be behaving
Perfeito
I couldn't have behaved you couldn't have behaved he couldn't have behaved we couldn't have behaved you couldn't have behaved they couldn't have behaved
Perfeito com V-ing
I couldn't have been behaving you couldn't have been behaving he couldn't have been behaving we couldn't have been behaving you couldn't have been behaving they couldn't have been behaving
Forma interrogativa
Forma simple
could I behave? could you behave? could he behave? could we behave? could you behave? could they behave?
Forma com V-ing
could I be behaving? could you be behaving? could he be behaving? could we be behaving? could you be behaving? could they be behaving?
Perfeito
could I have behaved? could you have behaved? could he have behaved? could we have behaved? could you have behaved? could they have behaved?
Perfeito com V-ing
could I have been behaving? could you have been behaving? could he have been behaving? could we have been behaving? could you have been behaving? could they have been behaving?
Forma interro-Negação
Forma simple
couldn't I behave? couldn't you behave? couldn't he behave? couldn't we behave? couldn't you behave? couldn't they behave?
Forma com V-ing
couldn't I be behaving? couldn't you be behaving? couldn't he be behaving? couldn't we be behaving? couldn't you be behaving? couldn't they be behaving?
Perfeito
couldn't I have behaved? couldn't you have behaved? couldn't he have behaved? couldn't we have behaved? couldn't you have behaved? couldn't they have behaved?
Perfeito com V-ing
couldn't I have been behaving? couldn't you have been behaving? couldn't he have been behaving? couldn't we have been behaving? couldn't you have been behaving? couldn't they have been behaving?