I must demoralise you must demoralise she must demoralise we must demoralise you must demoralise they must demoralise
V-ing form
I must be demoralising you must be demoralising she must be demoralising we must be demoralising you must be demoralising they must be demoralising
Perfect
I must have demoralised you must have demoralised she must have demoralised we must have demoralised you must have demoralised they must have demoralised
V-ing perfect
I must have been demoralising you must have been demoralising she must have been demoralising we must have been demoralising you must have been demoralising they must have been demoralising
Negation
Simple form
I must not demoralise you must not demoralise she must not demoralise we must not demoralise you must not demoralise they must not demoralise
V-ing form
I must not be demoralising you must not be demoralising she must not be demoralising we must not be demoralising you must not be demoralising they must not be demoralising
Perfect
I must not have demoralised you must not have demoralised she must not have demoralised we must not have demoralised you must not have demoralised they must not have demoralised
V-ing perfect
I must not have been demoralising you must not have been demoralising she must not have been demoralising we must not have been demoralising you must not have been demoralising they must not have been demoralising
Interrogative form
Simple form
must I demoralise? must you demoralise? must she demoralise? must we demoralise? must you demoralise? must they demoralise?
V-ing form
must I be demoralising? must you be demoralising? must she be demoralising? must we be demoralising? must you be demoralising? must they be demoralising?
Perfect
must I have demoralised? must you have demoralised? must she have demoralised? must we have demoralised? must you have demoralised? must they have demoralised?
V-ing perfect
must I have been demoralising? must you have been demoralising? must she have been demoralising? must we have been demoralising? must you have been demoralising? must they have been demoralising?
Interro-negative form
Simple form
must I not demoralise? must you not demoralise? must she not demoralise? must we not demoralise? must you not demoralise? must they not demoralise?
V-ing form
must I not be demoralising? must you not be demoralising? must she not be demoralising? must we not be demoralising? must you not be demoralising? must they not be demoralising?
Perfect
must I not have demoralised? must you not have demoralised? must she not have demoralised? must we not have demoralised? must you not have demoralised? must they not have demoralised?
V-ing perfect
must I not have been demoralising? must you not have been demoralising? must she not have been demoralising? must we not have been demoralising? must you not have been demoralising? must they not have been demoralising?