I must roar you must roar she must roar we must roar you must roar they must roar
Forme en V-ing
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
Perfect en V-ing
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
Négation
Forme simple
I mustn't roar you mustn't roar she mustn't roar we mustn't roar you mustn't roar they mustn't roar
Forme en V-ing
I mustn't be roaring you mustn't be roaring she mustn't be roaring we mustn't be roaring you mustn't be roaring they mustn't be roaring
Perfect
I mustn't have roared you mustn't have roared she mustn't have roared we mustn't have roared you mustn't have roared they mustn't have roared
Perfect en V-ing
I mustn't have been roaring you mustn't have been roaring she mustn't have been roaring we mustn't have been roaring you mustn't have been roaring they mustn't have been roaring
Forme interrogative
Forme simple
must I roar? must you roar? must she roar? must we roar? must you roar? must they roar?
Forme en V-ing
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?
Perfect en V-ing
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?
Forme interro-négative
Forme simple
mustn't I roar? mustn't you roar? mustn't she roar? mustn't we roar? mustn't you roar? mustn't they roar?
Forme en V-ing
mustn't I be roaring? mustn't you be roaring? mustn't she be roaring? mustn't we be roaring? mustn't you be roaring? mustn't they be roaring?
Perfect
mustn't I have roared? mustn't you have roared? mustn't she have roared? mustn't we have roared? mustn't you have roared? mustn't they have roared?
Perfect en V-ing
mustn't I have been roaring? mustn't you have been roaring? mustn't she have been roaring? mustn't we have been roaring? mustn't you have been roaring? mustn't they have been roaring?