I must improvise you must improvise he must improvise we must improvise you must improvise they must improvise
Forme en V-ing
I must be improvising you must be improvising he must be improvising we must be improvising you must be improvising they must be improvising
Perfect
I must have improvised you must have improvised he must have improvised we must have improvised you must have improvised they must have improvised
Perfect en V-ing
I must have been improvising you must have been improvising he must have been improvising we must have been improvising you must have been improvising they must have been improvising
Négation
Forme simple
I must not improvise you must not improvise he must not improvise we must not improvise you must not improvise they must not improvise
Forme en V-ing
I must not be improvising you must not be improvising he must not be improvising we must not be improvising you must not be improvising they must not be improvising
Perfect
I must not have improvised you must not have improvised he must not have improvised we must not have improvised you must not have improvised they must not have improvised
Perfect en V-ing
I must not have been improvising you must not have been improvising he must not have been improvising we must not have been improvising you must not have been improvising they must not have been improvising
Forme interrogative
Forme simple
must I improvise? must you improvise? must he improvise? must we improvise? must you improvise? must they improvise?
Forme en V-ing
must I be improvising? must you be improvising? must he be improvising? must we be improvising? must you be improvising? must they be improvising?
Perfect
must I have improvised? must you have improvised? must he have improvised? must we have improvised? must you have improvised? must they have improvised?
Perfect en V-ing
must I have been improvising? must you have been improvising? must he have been improvising? must we have been improvising? must you have been improvising? must they have been improvising?
Forme interro-négative
Forme simple
must I not improvise? must you not improvise? must he not improvise? must we not improvise? must you not improvise? must they not improvise?
Forme en V-ing
must I not be improvising? must you not be improvising? must he not be improvising? must we not be improvising? must you not be improvising? must they not be improvising?
Perfect
must I not have improvised? must you not have improvised? must he not have improvised? must we not have improvised? must you not have improvised? must they not have improvised?
Perfect en V-ing
must I not have been improvising? must you not have been improvising? must he not have been improvising? must we not have been improvising? must you not have been improvising? must they not have been improvising?