I can shield you can shield he can shield we can shield you can shield they can shield
Forme en V-ing
I can be shielding you can be shielding he can be shielding we can be shielding you can be shielding they can be shielding
Perfect
I can have shielded you can have shielded he can have shielded we can have shielded you can have shielded they can have shielded
Perfect en V-ing
I can have been shielding you can have been shielding he can have been shielding we can have been shielding you can have been shielding they can have been shielding
Négation
Forme simple
I can't shield you can't shield he can't shield we can't shield you can't shield they can't shield
Forme en V-ing
I can't be shielding you can't be shielding he can't be shielding we can't be shielding you can't be shielding they can't be shielding
Perfect
I can't have shielded you can't have shielded he can't have shielded we can't have shielded you can't have shielded they can't have shielded
Perfect en V-ing
I can't have been shielding you can't have been shielding he can't have been shielding we can't have been shielding you can't have been shielding they can't have been shielding
Forme interrogative
Forme simple
can I shield? can you shield? can he shield? can we shield? can you shield? can they shield?
Forme en V-ing
can I be shielding? can you be shielding? can he be shielding? can we be shielding? can you be shielding? can they be shielding?
Perfect
can I have shielded? can you have shielded? can he have shielded? can we have shielded? can you have shielded? can they have shielded?
Perfect en V-ing
can I have been shielding? can you have been shielding? can he have been shielding? can we have been shielding? can you have been shielding? can they have been shielding?
Forme interro-négative
Forme simple
can't I shield? can't you shield? can't he shield? can't we shield? can't you shield? can't they shield?
Forme en V-ing
can't I be shielding? can't you be shielding? can't he be shielding? can't we be shielding? can't you be shielding? can't they be shielding?
Perfect
can't I have shielded? can't you have shielded? can't he have shielded? can't we have shielded? can't you have shielded? can't they have shielded?
Perfect en V-ing
can't I have been shielding? can't you have been shielding? can't he have been shielding? can't we have been shielding? can't you have been shielding? can't they have been shielding?