I must delve you must delve he must delve we must delve you must delve they must delve
Forme en V-ing
I must be delving you must be delving he must be delving we must be delving you must be delving they must be delving
Perfect
I must have delved you must have delved he must have delved we must have delved you must have delved they must have delved
Perfect en V-ing
I must have been delving you must have been delving he must have been delving we must have been delving you must have been delving they must have been delving
Négation
Forme simple
I must not delve you must not delve he must not delve we must not delve you must not delve they must not delve
Forme en V-ing
I must not be delving you must not be delving he must not be delving we must not be delving you must not be delving they must not be delving
Perfect
I must not have delved you must not have delved he must not have delved we must not have delved you must not have delved they must not have delved
Perfect en V-ing
I must not have been delving you must not have been delving he must not have been delving we must not have been delving you must not have been delving they must not have been delving
Forme interrogative
Forme simple
must I delve? must you delve? must he delve? must we delve? must you delve? must they delve?
Forme en V-ing
must I be delving? must you be delving? must he be delving? must we be delving? must you be delving? must they be delving?
Perfect
must I have delved? must you have delved? must he have delved? must we have delved? must you have delved? must they have delved?
Perfect en V-ing
must I have been delving? must you have been delving? must he have been delving? must we have been delving? must you have been delving? must they have been delving?
Forme interro-négative
Forme simple
must I not delve? must you not delve? must he not delve? must we not delve? must you not delve? must they not delve?
Forme en V-ing
must I not be delving? must you not be delving? must he not be delving? must we not be delving? must you not be delving? must they not be delving?
Perfect
must I not have delved? must you not have delved? must he not have delved? must we not have delved? must you not have delved? must they not have delved?
Perfect en V-ing
must I not have been delving? must you not have been delving? must he not have been delving? must we not have been delving? must you not have been delving? must they not have been delving?