I must shepherd you must shepherd she must shepherd we must shepherd you must shepherd they must shepherd
V-ing form
I must be shepherding you must be shepherding she must be shepherding we must be shepherding you must be shepherding they must be shepherding
Perfect
I must have shepherded you must have shepherded she must have shepherded we must have shepherded you must have shepherded they must have shepherded
V-ing perfect
I must have been shepherding you must have been shepherding she must have been shepherding we must have been shepherding you must have been shepherding they must have been shepherding
Negation
Simple form
I must not shepherd you must not shepherd she must not shepherd we must not shepherd you must not shepherd they must not shepherd
V-ing form
I must not be shepherding you must not be shepherding she must not be shepherding we must not be shepherding you must not be shepherding they must not be shepherding
Perfect
I must not have shepherded you must not have shepherded she must not have shepherded we must not have shepherded you must not have shepherded they must not have shepherded
V-ing perfect
I must not have been shepherding you must not have been shepherding she must not have been shepherding we must not have been shepherding you must not have been shepherding they must not have been shepherding
Interrogative form
Simple form
must I shepherd? must you shepherd? must she shepherd? must we shepherd? must you shepherd? must they shepherd?
V-ing form
must I be shepherding? must you be shepherding? must she be shepherding? must we be shepherding? must you be shepherding? must they be shepherding?
Perfect
must I have shepherded? must you have shepherded? must she have shepherded? must we have shepherded? must you have shepherded? must they have shepherded?
V-ing perfect
must I have been shepherding? must you have been shepherding? must she have been shepherding? must we have been shepherding? must you have been shepherding? must they have been shepherding?
Interro-negative form
Simple form
must I not shepherd? must you not shepherd? must she not shepherd? must we not shepherd? must you not shepherd? must they not shepherd?
V-ing form
must I not be shepherding? must you not be shepherding? must she not be shepherding? must we not be shepherding? must you not be shepherding? must they not be shepherding?
Perfect
must I not have shepherded? must you not have shepherded? must she not have shepherded? must we not have shepherded? must you not have shepherded? must they not have shepherded?
V-ing perfect
must I not have been shepherding? must you not have been shepherding? must she not have been shepherding? must we not have been shepherding? must you not have been shepherding? must they not have been shepherding?