I must refine you must refine she must refine we must refine you must refine they must refine
Forme en V-ing
I must be refining you must be refining she must be refining we must be refining you must be refining they must be refining
Perfect
I must have refined you must have refined she must have refined we must have refined you must have refined they must have refined
Perfect en V-ing
I must have been refining you must have been refining she must have been refining we must have been refining you must have been refining they must have been refining
Négation
Forme simple
I must not refine you must not refine she must not refine we must not refine you must not refine they must not refine
Forme en V-ing
I must not be refining you must not be refining she must not be refining we must not be refining you must not be refining they must not be refining
Perfect
I must not have refined you must not have refined she must not have refined we must not have refined you must not have refined they must not have refined
Perfect en V-ing
I must not have been refining you must not have been refining she must not have been refining we must not have been refining you must not have been refining they must not have been refining
Forme interrogative
Forme simple
must I refine? must you refine? must she refine? must we refine? must you refine? must they refine?
Forme en V-ing
must I be refining? must you be refining? must she be refining? must we be refining? must you be refining? must they be refining?
Perfect
must I have refined? must you have refined? must she have refined? must we have refined? must you have refined? must they have refined?
Perfect en V-ing
must I have been refining? must you have been refining? must she have been refining? must we have been refining? must you have been refining? must they have been refining?
Forme interro-négative
Forme simple
must I not refine? must you not refine? must she not refine? must we not refine? must you not refine? must they not refine?
Forme en V-ing
must I not be refining? must you not be refining? must she not be refining? must we not be refining? must you not be refining? must they not be refining?
Perfect
must I not have refined? must you not have refined? must she not have refined? must we not have refined? must you not have refined? must they not have refined?
Perfect en V-ing
must I not have been refining? must you not have been refining? must she not have been refining? must we not have been refining? must you not have been refining? must they not have been refining?