I must modify you must modify she must modify we must modify you must modify they must modify
Forme en V-ing
I must be modifying you must be modifying she must be modifying we must be modifying you must be modifying they must be modifying
Perfect
I must have modified you must have modified she must have modified we must have modified you must have modified they must have modified
Perfect en V-ing
I must have been modifying you must have been modifying she must have been modifying we must have been modifying you must have been modifying they must have been modifying
Négation
Forme simple
I must not modify you must not modify she must not modify we must not modify you must not modify they must not modify
Forme en V-ing
I must not be modifying you must not be modifying she must not be modifying we must not be modifying you must not be modifying they must not be modifying
Perfect
I must not have modified you must not have modified she must not have modified we must not have modified you must not have modified they must not have modified
Perfect en V-ing
I must not have been modifying you must not have been modifying she must not have been modifying we must not have been modifying you must not have been modifying they must not have been modifying
Forme interrogative
Forme simple
must I modify? must you modify? must she modify? must we modify? must you modify? must they modify?
Forme en V-ing
must I be modifying? must you be modifying? must she be modifying? must we be modifying? must you be modifying? must they be modifying?
Perfect
must I have modified? must you have modified? must she have modified? must we have modified? must you have modified? must they have modified?
Perfect en V-ing
must I have been modifying? must you have been modifying? must she have been modifying? must we have been modifying? must you have been modifying? must they have been modifying?
Forme interro-négative
Forme simple
must I not modify? must you not modify? must she not modify? must we not modify? must you not modify? must they not modify?
Forme en V-ing
must I not be modifying? must you not be modifying? must she not be modifying? must we not be modifying? must you not be modifying? must they not be modifying?
Perfect
must I not have modified? must you not have modified? must she not have modified? must we not have modified? must you not have modified? must they not have modified?
Perfect en V-ing
must I not have been modifying? must you not have been modifying? must she not have been modifying? must we not have been modifying? must you not have been modifying? must they not have been modifying?