I can guard you can guard she can guard we can guard you can guard they can guard
Forme en V-ing
I can be guarding you can be guarding she can be guarding we can be guarding you can be guarding they can be guarding
Perfect
I can have guarded you can have guarded she can have guarded we can have guarded you can have guarded they can have guarded
Perfect en V-ing
I can have been guarding you can have been guarding she can have been guarding we can have been guarding you can have been guarding they can have been guarding
Négation
Forme simple
I can't guard you can't guard she can't guard we can't guard you can't guard they can't guard
Forme en V-ing
I can't be guarding you can't be guarding she can't be guarding we can't be guarding you can't be guarding they can't be guarding
Perfect
I can't have guarded you can't have guarded she can't have guarded we can't have guarded you can't have guarded they can't have guarded
Perfect en V-ing
I can't have been guarding you can't have been guarding she can't have been guarding we can't have been guarding you can't have been guarding they can't have been guarding
Forme interrogative
Forme simple
can I guard? can you guard? can she guard? can we guard? can you guard? can they guard?
Forme en V-ing
can I be guarding? can you be guarding? can she be guarding? can we be guarding? can you be guarding? can they be guarding?
Perfect
can I have guarded? can you have guarded? can she have guarded? can we have guarded? can you have guarded? can they have guarded?
Perfect en V-ing
can I have been guarding? can you have been guarding? can she have been guarding? can we have been guarding? can you have been guarding? can they have been guarding?
Forme interro-négative
Forme simple
can't I guard? can't you guard? can't she guard? can't we guard? can't you guard? can't they guard?
Forme en V-ing
can't I be guarding? can't you be guarding? can't she be guarding? can't we be guarding? can't you be guarding? can't they be guarding?
Perfect
can't I have guarded? can't you have guarded? can't she have guarded? can't we have guarded? can't you have guarded? can't they have guarded?
Perfect en V-ing
can't I have been guarding? can't you have been guarding? can't she have been guarding? can't we have been guarding? can't you have been guarding? can't they have been guarding?