I could testify you could testify he could testify we could testify you could testify they could testify
Forma com V-ing
I could be testifying you could be testifying he could be testifying we could be testifying you could be testifying they could be testifying
Perfeito
I could have testified you could have testified he could have testified we could have testified you could have testified they could have testified
Perfeito com V-ing
I could have been testifying you could have been testifying he could have been testifying we could have been testifying you could have been testifying they could have been testifying
Negação
Forma simple
I couldn't testify you couldn't testify he couldn't testify we couldn't testify you couldn't testify they couldn't testify
Forma com V-ing
I couldn't be testifying you couldn't be testifying he couldn't be testifying we couldn't be testifying you couldn't be testifying they couldn't be testifying
Perfeito
I couldn't have testified you couldn't have testified he couldn't have testified we couldn't have testified you couldn't have testified they couldn't have testified
Perfeito com V-ing
I couldn't have been testifying you couldn't have been testifying he couldn't have been testifying we couldn't have been testifying you couldn't have been testifying they couldn't have been testifying
Forma interrogativa
Forma simple
could I testify? could you testify? could he testify? could we testify? could you testify? could they testify?
Forma com V-ing
could I be testifying? could you be testifying? could he be testifying? could we be testifying? could you be testifying? could they be testifying?
Perfeito
could I have testified? could you have testified? could he have testified? could we have testified? could you have testified? could they have testified?
Perfeito com V-ing
could I have been testifying? could you have been testifying? could he have been testifying? could we have been testifying? could you have been testifying? could they have been testifying?
Forma interro-Negação
Forma simple
couldn't I testify? couldn't you testify? couldn't he testify? couldn't we testify? couldn't you testify? couldn't they testify?
Forma com V-ing
couldn't I be testifying? couldn't you be testifying? couldn't he be testifying? couldn't we be testifying? couldn't you be testifying? couldn't they be testifying?
Perfeito
couldn't I have testified? couldn't you have testified? couldn't he have testified? couldn't we have testified? couldn't you have testified? couldn't they have testified?
Perfeito com V-ing
couldn't I have been testifying? couldn't you have been testifying? couldn't he have been testifying? couldn't we have been testifying? couldn't you have been testifying? couldn't they have been testifying?