I must register you must register he must register we must register you must register they must register
Forme en V-ing
I must be registering you must be registering he must be registering we must be registering you must be registering they must be registering
Perfect
I must have registered you must have registered he must have registered we must have registered you must have registered they must have registered
Perfect en V-ing
I must have been registering you must have been registering he must have been registering we must have been registering you must have been registering they must have been registering
Négation
Forme simple
I must not register you must not register he must not register we must not register you must not register they must not register
Forme en V-ing
I must not be registering you must not be registering he must not be registering we must not be registering you must not be registering they must not be registering
Perfect
I must not have registered you must not have registered he must not have registered we must not have registered you must not have registered they must not have registered
Perfect en V-ing
I must not have been registering you must not have been registering he must not have been registering we must not have been registering you must not have been registering they must not have been registering
Forme interrogative
Forme simple
must I register? must you register? must he register? must we register? must you register? must they register?
Forme en V-ing
must I be registering? must you be registering? must he be registering? must we be registering? must you be registering? must they be registering?
Perfect
must I have registered? must you have registered? must he have registered? must we have registered? must you have registered? must they have registered?
Perfect en V-ing
must I have been registering? must you have been registering? must he have been registering? must we have been registering? must you have been registering? must they have been registering?
Forme interro-négative
Forme simple
must I not register? must you not register? must he not register? must we not register? must you not register? must they not register?
Forme en V-ing
must I not be registering? must you not be registering? must he not be registering? must we not be registering? must you not be registering? must they not be registering?
Perfect
must I not have registered? must you not have registered? must he not have registered? must we not have registered? must you not have registered? must they not have registered?
Perfect en V-ing
must I not have been registering? must you not have been registering? must he not have been registering? must we not have been registering? must you not have been registering? must they not have been registering?