I must acidify you must acidify he must acidify we must acidify you must acidify they must acidify
Forme en V-ing
I must be acidifying you must be acidifying he must be acidifying we must be acidifying you must be acidifying they must be acidifying
Perfect
I must have acidified you must have acidified he must have acidified we must have acidified you must have acidified they must have acidified
Perfect en V-ing
I must have been acidifying you must have been acidifying he must have been acidifying we must have been acidifying you must have been acidifying they must have been acidifying
Négation
Forme simple
I must not acidify you must not acidify he must not acidify we must not acidify you must not acidify they must not acidify
Forme en V-ing
I must not be acidifying you must not be acidifying he must not be acidifying we must not be acidifying you must not be acidifying they must not be acidifying
Perfect
I must not have acidified you must not have acidified he must not have acidified we must not have acidified you must not have acidified they must not have acidified
Perfect en V-ing
I must not have been acidifying you must not have been acidifying he must not have been acidifying we must not have been acidifying you must not have been acidifying they must not have been acidifying
Forme interrogative
Forme simple
must I acidify? must you acidify? must he acidify? must we acidify? must you acidify? must they acidify?
Forme en V-ing
must I be acidifying? must you be acidifying? must he be acidifying? must we be acidifying? must you be acidifying? must they be acidifying?
Perfect
must I have acidified? must you have acidified? must he have acidified? must we have acidified? must you have acidified? must they have acidified?
Perfect en V-ing
must I have been acidifying? must you have been acidifying? must he have been acidifying? must we have been acidifying? must you have been acidifying? must they have been acidifying?
Forme interro-négative
Forme simple
must I not acidify? must you not acidify? must he not acidify? must we not acidify? must you not acidify? must they not acidify?
Forme en V-ing
must I not be acidifying? must you not be acidifying? must he not be acidifying? must we not be acidifying? must you not be acidifying? must they not be acidifying?
Perfect
must I not have acidified? must you not have acidified? must he not have acidified? must we not have acidified? must you not have acidified? must they not have acidified?
Perfect en V-ing
must I not have been acidifying? must you not have been acidifying? must he not have been acidifying? must we not have been acidifying? must you not have been acidifying? must they not have been acidifying?