I must roar you must roar she must roar we must roar you must roar they must roar
V-ing form
I must be roaring you must be roaring she must be roaring we must be roaring you must be roaring they must be roaring
Perfect
I must have roared you must have roared she must have roared we must have roared you must have roared they must have roared
V-ing perfect
I must have been roaring you must have been roaring she must have been roaring we must have been roaring you must have been roaring they must have been roaring
Negation
Simple form
I must not roar you must not roar she must not roar we must not roar you must not roar they must not roar
V-ing form
I must not be roaring you must not be roaring she must not be roaring we must not be roaring you must not be roaring they must not be roaring
Perfect
I must not have roared you must not have roared she must not have roared we must not have roared you must not have roared they must not have roared
V-ing perfect
I must not have been roaring you must not have been roaring she must not have been roaring we must not have been roaring you must not have been roaring they must not have been roaring
Interrogative form
Simple form
must I roar? must you roar? must she roar? must we roar? must you roar? must they roar?
V-ing form
must I be roaring? must you be roaring? must she be roaring? must we be roaring? must you be roaring? must they be roaring?
Perfect
must I have roared? must you have roared? must she have roared? must we have roared? must you have roared? must they have roared?
V-ing perfect
must I have been roaring? must you have been roaring? must she have been roaring? must we have been roaring? must you have been roaring? must they have been roaring?
Interro-negative form
Simple form
must I not roar? must you not roar? must she not roar? must we not roar? must you not roar? must they not roar?
V-ing form
must I not be roaring? must you not be roaring? must she not be roaring? must we not be roaring? must you not be roaring? must they not be roaring?
Perfect
must I not have roared? must you not have roared? must she not have roared? must we not have roared? must you not have roared? must they not have roared?
V-ing perfect
must I not have been roaring? must you not have been roaring? must she not have been roaring? must we not have been roaring? must you not have been roaring? must they not have been roaring?