I can testify you can testify he can testify we can testify you can testify they can testify
Forme en V-ing
I can be testifying you can be testifying he can be testifying we can be testifying you can be testifying they can be testifying
Perfect
I can have testified you can have testified he can have testified we can have testified you can have testified they can have testified
Perfect en V-ing
I can have been testifying you can have been testifying he can have been testifying we can have been testifying you can have been testifying they can have been testifying
Négation
Forme simple
I can't testify you can't testify he can't testify we can't testify you can't testify they can't testify
Forme en V-ing
I can't be testifying you can't be testifying he can't be testifying we can't be testifying you can't be testifying they can't be testifying
Perfect
I can't have testified you can't have testified he can't have testified we can't have testified you can't have testified they can't have testified
Perfect en V-ing
I can't have been testifying you can't have been testifying he can't have been testifying we can't have been testifying you can't have been testifying they can't have been testifying
Forme interrogative
Forme simple
can I testify? can you testify? can he testify? can we testify? can you testify? can they testify?
Forme en V-ing
can I be testifying? can you be testifying? can he be testifying? can we be testifying? can you be testifying? can they be testifying?
Perfect
can I have testified? can you have testified? can he have testified? can we have testified? can you have testified? can they have testified?
Perfect en V-ing
can I have been testifying? can you have been testifying? can he have been testifying? can we have been testifying? can you have been testifying? can they have been testifying?
Forme interro-négative
Forme simple
can't I testify? can't you testify? can't he testify? can't we testify? can't you testify? can't they testify?
Forme en V-ing
can't I be testifying? can't you be testifying? can't he be testifying? can't we be testifying? can't you be testifying? can't they be testifying?
Perfect
can't I have testified? can't you have testified? can't he have testified? can't we have testified? can't you have testified? can't they have testified?
Perfect en V-ing
can't I have been testifying? can't you have been testifying? can't he have been testifying? can't we have been testifying? can't you have been testifying? can't they have been testifying?