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