I must roast you must roast he must roast we must roast you must roast they must roast
Forme en V-ing
I must be roasting you must be roasting he must be roasting we must be roasting you must be roasting they must be roasting
Perfect
I must have roasted you must have roasted he must have roasted we must have roasted you must have roasted they must have roasted
Perfect en V-ing
I must have been roasting you must have been roasting he must have been roasting we must have been roasting you must have been roasting they must have been roasting
Négation
Forme simple
I mustn't roast you mustn't roast he mustn't roast we mustn't roast you mustn't roast they mustn't roast
Forme en V-ing
I mustn't be roasting you mustn't be roasting he mustn't be roasting we mustn't be roasting you mustn't be roasting they mustn't be roasting
Perfect
I mustn't have roasted you mustn't have roasted he mustn't have roasted we mustn't have roasted you mustn't have roasted they mustn't have roasted
Perfect en V-ing
I mustn't have been roasting you mustn't have been roasting he mustn't have been roasting we mustn't have been roasting you mustn't have been roasting they mustn't have been roasting
Forme interrogative
Forme simple
must I roast? must you roast? must he roast? must we roast? must you roast? must they roast?
Forme en V-ing
must I be roasting? must you be roasting? must he be roasting? must we be roasting? must you be roasting? must they be roasting?
Perfect
must I have roasted? must you have roasted? must he have roasted? must we have roasted? must you have roasted? must they have roasted?
Perfect en V-ing
must I have been roasting? must you have been roasting? must he have been roasting? must we have been roasting? must you have been roasting? must they have been roasting?
Forme interro-négative
Forme simple
mustn't I roast? mustn't you roast? mustn't he roast? mustn't we roast? mustn't you roast? mustn't they roast?
Forme en V-ing
mustn't I be roasting? mustn't you be roasting? mustn't he be roasting? mustn't we be roasting? mustn't you be roasting? mustn't they be roasting?
Perfect
mustn't I have roasted? mustn't you have roasted? mustn't he have roasted? mustn't we have roasted? mustn't you have roasted? mustn't they have roasted?
Perfect en V-ing
mustn't I have been roasting? mustn't you have been roasting? mustn't he have been roasting? mustn't we have been roasting? mustn't you have been roasting? mustn't they have been roasting?