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