I must resharpen you must resharpen she must resharpen we must resharpen you must resharpen they must resharpen
V-ing form
I must be resharpening you must be resharpening she must be resharpening we must be resharpening you must be resharpening they must be resharpening
Perfect
I must have resharpened you must have resharpened she must have resharpened we must have resharpened you must have resharpened they must have resharpened
V-ing perfect
I must have been resharpening you must have been resharpening she must have been resharpening we must have been resharpening you must have been resharpening they must have been resharpening
Negation
Simple form
I must not resharpen you must not resharpen she must not resharpen we must not resharpen you must not resharpen they must not resharpen
V-ing form
I must not be resharpening you must not be resharpening she must not be resharpening we must not be resharpening you must not be resharpening they must not be resharpening
Perfect
I must not have resharpened you must not have resharpened she must not have resharpened we must not have resharpened you must not have resharpened they must not have resharpened
V-ing perfect
I must not have been resharpening you must not have been resharpening she must not have been resharpening we must not have been resharpening you must not have been resharpening they must not have been resharpening
Interrogative form
Simple form
must I resharpen? must you resharpen? must she resharpen? must we resharpen? must you resharpen? must they resharpen?
V-ing form
must I be resharpening? must you be resharpening? must she be resharpening? must we be resharpening? must you be resharpening? must they be resharpening?
Perfect
must I have resharpened? must you have resharpened? must she have resharpened? must we have resharpened? must you have resharpened? must they have resharpened?
V-ing perfect
must I have been resharpening? must you have been resharpening? must she have been resharpening? must we have been resharpening? must you have been resharpening? must they have been resharpening?
Interro-negative form
Simple form
must I not resharpen? must you not resharpen? must she not resharpen? must we not resharpen? must you not resharpen? must they not resharpen?
V-ing form
must I not be resharpening? must you not be resharpening? must she not be resharpening? must we not be resharpening? must you not be resharpening? must they not be resharpening?
Perfect
must I not have resharpened? must you not have resharpened? must she not have resharpened? must we not have resharpened? must you not have resharpened? must they not have resharpened?
V-ing perfect
must I not have been resharpening? must you not have been resharpening? must she not have been resharpening? must we not have been resharpening? must you not have been resharpening? must they not have been resharpening?