I must cover you must cover he must cover we must cover you must cover they must cover
Forme en V-ing
I must be covering you must be covering he must be covering we must be covering you must be covering they must be covering
Perfect
I must have covered you must have covered he must have covered we must have covered you must have covered they must have covered
Perfect en V-ing
I must have been covering you must have been covering he must have been covering we must have been covering you must have been covering they must have been covering
Négation
Forme simple
I must not cover you must not cover he must not cover we must not cover you must not cover they must not cover
Forme en V-ing
I must not be covering you must not be covering he must not be covering we must not be covering you must not be covering they must not be covering
Perfect
I must not have covered you must not have covered he must not have covered we must not have covered you must not have covered they must not have covered
Perfect en V-ing
I must not have been covering you must not have been covering he must not have been covering we must not have been covering you must not have been covering they must not have been covering
Forme interrogative
Forme simple
must I cover? must you cover? must he cover? must we cover? must you cover? must they cover?
Forme en V-ing
must I be covering? must you be covering? must he be covering? must we be covering? must you be covering? must they be covering?
Perfect
must I have covered? must you have covered? must he have covered? must we have covered? must you have covered? must they have covered?
Perfect en V-ing
must I have been covering? must you have been covering? must he have been covering? must we have been covering? must you have been covering? must they have been covering?
Forme interro-négative
Forme simple
must I not cover? must you not cover? must he not cover? must we not cover? must you not cover? must they not cover?
Forme en V-ing
must I not be covering? must you not be covering? must he not be covering? must we not be covering? must you not be covering? must they not be covering?
Perfect
must I not have covered? must you not have covered? must he not have covered? must we not have covered? must you not have covered? must they not have covered?
Perfect en V-ing
must I not have been covering? must you not have been covering? must he not have been covering? must we not have been covering? must you not have been covering? must they not have been covering?