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