I must preach you must preach she must preach we must preach you must preach they must preach
V-ing form
I must be preaching you must be preaching she must be preaching we must be preaching you must be preaching they must be preaching
Perfect
I must have preached you must have preached she must have preached we must have preached you must have preached they must have preached
V-ing perfect
I must have been preaching you must have been preaching she must have been preaching we must have been preaching you must have been preaching they must have been preaching
Negation
Simple form
I must not preach you must not preach she must not preach we must not preach you must not preach they must not preach
V-ing form
I must not be preaching you must not be preaching she must not be preaching we must not be preaching you must not be preaching they must not be preaching
Perfect
I must not have preached you must not have preached she must not have preached we must not have preached you must not have preached they must not have preached
V-ing perfect
I must not have been preaching you must not have been preaching she must not have been preaching we must not have been preaching you must not have been preaching they must not have been preaching
Interrogative form
Simple form
must I preach? must you preach? must she preach? must we preach? must you preach? must they preach?
V-ing form
must I be preaching? must you be preaching? must she be preaching? must we be preaching? must you be preaching? must they be preaching?
Perfect
must I have preached? must you have preached? must she have preached? must we have preached? must you have preached? must they have preached?
V-ing perfect
must I have been preaching? must you have been preaching? must she have been preaching? must we have been preaching? must you have been preaching? must they have been preaching?
Interro-negative form
Simple form
must I not preach? must you not preach? must she not preach? must we not preach? must you not preach? must they not preach?
V-ing form
must I not be preaching? must you not be preaching? must she not be preaching? must we not be preaching? must you not be preaching? must they not be preaching?
Perfect
must I not have preached? must you not have preached? must she not have preached? must we not have preached? must you not have preached? must they not have preached?
V-ing perfect
must I not have been preaching? must you not have been preaching? must she not have been preaching? must we not have been preaching? must you not have been preaching? must they not have been preaching?