I must argue you must argue she must argue we must argue you must argue they must argue
V-ing form
I must be arguing you must be arguing she must be arguing we must be arguing you must be arguing they must be arguing
Perfect
I must have argued you must have argued she must have argued we must have argued you must have argued they must have argued
V-ing perfect
I must have been arguing you must have been arguing she must have been arguing we must have been arguing you must have been arguing they must have been arguing
Negation
Simple form
I must not argue you must not argue she must not argue we must not argue you must not argue they must not argue
V-ing form
I must not be arguing you must not be arguing she must not be arguing we must not be arguing you must not be arguing they must not be arguing
Perfect
I must not have argued you must not have argued she must not have argued we must not have argued you must not have argued they must not have argued
V-ing perfect
I must not have been arguing you must not have been arguing she must not have been arguing we must not have been arguing you must not have been arguing they must not have been arguing
Interrogative form
Simple form
must I argue? must you argue? must she argue? must we argue? must you argue? must they argue?
V-ing form
must I be arguing? must you be arguing? must she be arguing? must we be arguing? must you be arguing? must they be arguing?
Perfect
must I have argued? must you have argued? must she have argued? must we have argued? must you have argued? must they have argued?
V-ing perfect
must I have been arguing? must you have been arguing? must she have been arguing? must we have been arguing? must you have been arguing? must they have been arguing?
Interro-negative form
Simple form
must I not argue? must you not argue? must she not argue? must we not argue? must you not argue? must they not argue?
V-ing form
must I not be arguing? must you not be arguing? must she not be arguing? must we not be arguing? must you not be arguing? must they not be arguing?
Perfect
must I not have argued? must you not have argued? must she not have argued? must we not have argued? must you not have argued? must they not have argued?
V-ing perfect
must I not have been arguing? must you not have been arguing? must she not have been arguing? must we not have been arguing? must you not have been arguing? must they not have been arguing?