I must alternate you must alternate he must alternate we must alternate you must alternate they must alternate
Forme en V-ing
I must be alternating you must be alternating he must be alternating we must be alternating you must be alternating they must be alternating
Perfect
I must have alternated you must have alternated he must have alternated we must have alternated you must have alternated they must have alternated
Perfect en V-ing
I must have been alternating you must have been alternating he must have been alternating we must have been alternating you must have been alternating they must have been alternating
Négation
Forme simple
I must not alternate you must not alternate he must not alternate we must not alternate you must not alternate they must not alternate
Forme en V-ing
I must not be alternating you must not be alternating he must not be alternating we must not be alternating you must not be alternating they must not be alternating
Perfect
I must not have alternated you must not have alternated he must not have alternated we must not have alternated you must not have alternated they must not have alternated
Perfect en V-ing
I must not have been alternating you must not have been alternating he must not have been alternating we must not have been alternating you must not have been alternating they must not have been alternating
Forme interrogative
Forme simple
must I alternate? must you alternate? must he alternate? must we alternate? must you alternate? must they alternate?
Forme en V-ing
must I be alternating? must you be alternating? must he be alternating? must we be alternating? must you be alternating? must they be alternating?
Perfect
must I have alternated? must you have alternated? must he have alternated? must we have alternated? must you have alternated? must they have alternated?
Perfect en V-ing
must I have been alternating? must you have been alternating? must he have been alternating? must we have been alternating? must you have been alternating? must they have been alternating?
Forme interro-négative
Forme simple
must I not alternate? must you not alternate? must he not alternate? must we not alternate? must you not alternate? must they not alternate?
Forme en V-ing
must I not be alternating? must you not be alternating? must he not be alternating? must we not be alternating? must you not be alternating? must they not be alternating?
Perfect
must I not have alternated? must you not have alternated? must he not have alternated? must we not have alternated? must you not have alternated? must they not have alternated?
Perfect en V-ing
must I not have been alternating? must you not have been alternating? must he not have been alternating? must we not have been alternating? must you not have been alternating? must they not have been alternating?